{"id":"https://openalex.org/W2944757759","doi":"https://doi.org/10.1177/0165551519845848","title":"A study on first citations of patents through a combination of Bradford\u2019s distribution, Cox regression and life tables method","display_name":"A study on first citations of patents through a combination of Bradford\u2019s distribution, Cox regression and life tables method","publication_year":2019,"publication_date":"2019-05-08","ids":{"openalex":"https://openalex.org/W2944757759","doi":"https://doi.org/10.1177/0165551519845848","mag":"2944757759"},"language":"en","primary_location":{"id":"doi:10.1177/0165551519845848","is_oa":false,"landing_page_url":"https://doi.org/10.1177/0165551519845848","pdf_url":null,"source":{"id":"https://openalex.org/S68913162","display_name":"Journal of Information Science","issn_l":"0165-5515","issn":["0165-5515","1741-6485"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320017","host_organization_name":"SAGE Publishing","host_organization_lineage":["https://openalex.org/P4310320017"],"host_organization_lineage_names":["SAGE Publishing"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Information Science","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5078702154","display_name":"Mohammad Tavakolizadeh\u2010Ravari","orcid":"https://orcid.org/0000-0003-1649-671X"},"institutions":[{"id":"https://openalex.org/I112536369","display_name":"Yazd University","ror":"https://ror.org/02x99ac45","country_code":"IR","type":"education","lineage":["https://openalex.org/I112536369"]}],"countries":["IR"],"is_corresponding":false,"raw_author_name":"Mohammad Tavakolizadeh-Ravari","raw_affiliation_strings":["Department of Information Science and Knowledge Studies, Yazd University, Iran"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Information Science and Knowledge Studies, Yazd University, Iran","institution_ids":["https://openalex.org/I112536369"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5043869519","display_name":"Faramarz Soheili","orcid":"https://orcid.org/0000-0003-2581-7052"},"institutions":[{"id":"https://openalex.org/I55547365","display_name":"Payame Noor University","ror":"https://ror.org/031699d98","country_code":"IR","type":"education","lineage":["https://openalex.org/I55547365"]}],"countries":["IR"],"is_corresponding":true,"raw_author_name":"Faramarz Soheili","raw_affiliation_strings":["Department of Library and Information Science, Payame Noor University, Iran"],"raw_orcid":"https://orcid.org/0000-0003-2581-7052","affiliations":[{"raw_affiliation_string":"Department of Library and Information Science, Payame Noor University, Iran","institution_ids":["https://openalex.org/I55547365"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5050948830","display_name":"Fatemeh Makkizadeh","orcid":null},"institutions":[{"id":"https://openalex.org/I112536369","display_name":"Yazd University","ror":"https://ror.org/02x99ac45","country_code":"IR","type":"education","lineage":["https://openalex.org/I112536369"]}],"countries":["IR"],"is_corresponding":false,"raw_author_name":"Fatemeh Makkizadeh","raw_affiliation_strings":["Department of Information Science and Knowledge Studies, Yazd University, Iran"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Information Science and Knowledge Studies, Yazd University, Iran","institution_ids":["https://openalex.org/I112536369"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5002561527","display_name":"Fatemeh Akrami","orcid":null},"institutions":[{"id":"https://openalex.org/I112536369","display_name":"Yazd University","ror":"https://ror.org/02x99ac45","country_code":"IR","type":"education","lineage":["https://openalex.org/I112536369"]}],"countries":["IR"],"is_corresponding":false,"raw_author_name":"Fatemeh Akrami","raw_affiliation_strings":["Department of Information Science and Knowledge Studies, Yazd University, Iran"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Information Science and Knowledge Studies, Yazd University, Iran","institution_ids":["https://openalex.org/I112536369"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5043869519"],"corresponding_institution_ids":["https://openalex.org/I55547365"],"apc_list":{"value":3650,"currency":"USD","value_usd":3650},"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":5,"citation_normalized_percentile":{"value":0.05510459,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":"46","issue":"4","first_page":"496","last_page":"507"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12851","display_name":"Firm Innovation and Growth","score":0.9968000054359436,"subfield":{"id":"https://openalex.org/subfields/2002","display_name":"Economics and Econometrics"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T12851","display_name":"Firm Innovation and Growth","score":0.9968000054359436,"subfield":{"id":"https://openalex.org/subfields/2002","display_name":"Economics and Econometrics"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10393","display_name":"Economic Growth and Productivity","score":0.9922000169754028,"subfield":{"id":"https://openalex.org/subfields/2002","display_name":"Economics and Econometrics"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10856","display_name":"Intellectual Property and Patents","score":0.9835000038146973,"subfield":{"id":"https://openalex.org/subfields/1405","display_name":"Management of Technology and Innovation"},"field":{"id":"https://openalex.org/fields/14","display_name":"Business, Management and Accounting"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/citation","display_name":"Citation","score":0.660772442817688},{"id":"https://openalex.org/keywords/trademark","display_name":"Trademark","score":0.5683900713920593},{"id":"https://openalex.org/keywords/regression-analysis","display_name":"Regression analysis","score":0.5295922160148621},{"id":"https://openalex.org/keywords/categorization","display_name":"Categorization","score":0.47915714979171753},{"id":"https://openalex.org/keywords/distribution","display_name":"Distribution (mathematics)","score":0.47350719571113586},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.4502588212490082},{"id":"https://openalex.org/keywords/life-table","display_name":"Life table","score":0.42153647541999817},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.41178521513938904},{"id":"https://openalex.org/keywords/actuarial-science","display_name":"Actuarial science","score":0.3595898747444153},{"id":"https://openalex.org/keywords/operations-research","display_name":"Operations research","score":0.3563466966152191},{"id":"https://openalex.org/keywords/library-science","display_name":"Library science","score":0.2986449599266052},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.26314258575439453},{"id":"https://openalex.org/keywords/business","display_name":"Business","score":0.2559981048107147},{"id":"https://openalex.org/keywords/demography","display_name":"Demography","score":0.2012665867805481},{"id":"https://openalex.org/keywords/sociology","display_name":"Sociology","score":0.19910135865211487},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.1777743399143219}],"concepts":[{"id":"https://openalex.org/C2778805511","wikidata":"https://www.wikidata.org/wiki/Q1713","display_name":"Citation","level":2,"score":0.660772442817688},{"id":"https://openalex.org/C2779027411","wikidata":"https://www.wikidata.org/wiki/Q167270","display_name":"Trademark","level":2,"score":0.5683900713920593},{"id":"https://openalex.org/C152877465","wikidata":"https://www.wikidata.org/wiki/Q208042","display_name":"Regression analysis","level":2,"score":0.5295922160148621},{"id":"https://openalex.org/C94124525","wikidata":"https://www.wikidata.org/wiki/Q912550","display_name":"Categorization","level":2,"score":0.47915714979171753},{"id":"https://openalex.org/C110121322","wikidata":"https://www.wikidata.org/wiki/Q865811","display_name":"Distribution (mathematics)","level":2,"score":0.47350719571113586},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.4502588212490082},{"id":"https://openalex.org/C56479603","wikidata":"https://www.wikidata.org/wiki/Q632184","display_name":"Life table","level":3,"score":0.42153647541999817},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.41178521513938904},{"id":"https://openalex.org/C162118730","wikidata":"https://www.wikidata.org/wiki/Q1128453","display_name":"Actuarial science","level":1,"score":0.3595898747444153},{"id":"https://openalex.org/C42475967","wikidata":"https://www.wikidata.org/wiki/Q194292","display_name":"Operations research","level":1,"score":0.3563466966152191},{"id":"https://openalex.org/C161191863","wikidata":"https://www.wikidata.org/wiki/Q199655","display_name":"Library science","level":1,"score":0.2986449599266052},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.26314258575439453},{"id":"https://openalex.org/C144133560","wikidata":"https://www.wikidata.org/wiki/Q4830453","display_name":"Business","level":0,"score":0.2559981048107147},{"id":"https://openalex.org/C149923435","wikidata":"https://www.wikidata.org/wiki/Q37732","display_name":"Demography","level":1,"score":0.2012665867805481},{"id":"https://openalex.org/C144024400","wikidata":"https://www.wikidata.org/wiki/Q21201","display_name":"Sociology","level":0,"score":0.19910135865211487},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.1777743399143219},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C2908647359","wikidata":"https://www.wikidata.org/wiki/Q2625603","display_name":"Population","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1177/0165551519845848","is_oa":false,"landing_page_url":"https://doi.org/10.1177/0165551519845848","pdf_url":null,"source":{"id":"https://openalex.org/S68913162","display_name":"Journal of Information Science","issn_l":"0165-5515","issn":["0165-5515","1741-6485"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320017","host_organization_name":"SAGE Publishing","host_organization_lineage":["https://openalex.org/P4310320017"],"host_organization_lineage_names":["SAGE Publishing"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Information Science","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":18,"referenced_works":["https://openalex.org/W1514313935","https://openalex.org/W1976103163","https://openalex.org/W2000042664","https://openalex.org/W2026166438","https://openalex.org/W2027964065","https://openalex.org/W2037793529","https://openalex.org/W2045532993","https://openalex.org/W2059812123","https://openalex.org/W2068960108","https://openalex.org/W2071610639","https://openalex.org/W2074805906","https://openalex.org/W2090184431","https://openalex.org/W2118152521","https://openalex.org/W2144411997","https://openalex.org/W2555197705","https://openalex.org/W2577810080","https://openalex.org/W3103362336","https://openalex.org/W4376547480"],"related_works":["https://openalex.org/W2086947602","https://openalex.org/W2185149595","https://openalex.org/W3001000663","https://openalex.org/W2897411650","https://openalex.org/W1987816332","https://openalex.org/W3087395156","https://openalex.org/W4214808314","https://openalex.org/W2129021472","https://openalex.org/W2144811810","https://openalex.org/W1555521949"],"abstract_inverted_index":{"The":[0,13,69,105],"current":[1],"research":[2,70],"employs":[3],"two":[4],"survival":[5,67,188],"analysis":[6,189],"methods:":[7],"Cox":[8,143],"regression":[9,144],"and":[10,21,40,61,94,101,121,137,165,198],"life":[11],"tables.":[12],"first":[14,26,43,119,155,176,182],"determines":[15],"the":[16,25,33,36,42,77,91,97,113,148,154,175,181,192,201,204],"effect":[17],"of":[18,38,57,73,79,84,115,117,133,159,162,174,206],"inventor,":[19],"assignee":[20],"country":[22],"for":[23,55,66,131,152,194,199,203],"receiving":[24,41,153],"citation":[27,44,156,209],"by":[28,45,96],"patents.":[29,46],"Life":[30,167],"tables":[31],"concern":[32],"time-lag":[34],"between":[35],"dates":[37],"granting":[39],"Bradford\u2019s":[47,109,126],"method":[48,110],"is":[49,128],"also":[50],"established":[51],"as":[52,63],"a":[53,64,186],"technique":[54],"categorization":[56],"patents,":[58,118,135],"inventors,":[59],"assignees":[60,138],"countries":[62],"prerequisite":[65],"analysis.":[68,210],"materials":[71],"consist":[72],"2837":[74],"patents":[75],"in":[76,139,157,180],"area":[78,141],"\u2018purification,":[80],"separation,":[81],"or":[82],"recovery":[83],"hydrocarbon":[85],"components\u2019":[86],"which":[87],"were":[88,178],"classified":[89],"under":[90],"classes":[92],"585/800":[93],"585/868":[95],"United":[98],"States":[99],"Patent":[100],"Trademark":[102],"Office":[103],"(USPTO).":[104],"findings":[106],"showed":[107],"that":[108,125,146,171],"complies":[111],"with":[112],"distribution":[114,127],"citations":[116,177],"inventors":[120,136],"assignees.":[122],"It":[123],"means":[124],"well":[129],"suited":[130],"determination":[132],"key":[134],"an":[140],"too.":[142],"revealed":[145,170],"only":[147],"inventors\u2019":[149],"variable":[150],"decides":[151],"terms":[158],"frequency,":[160],"degrees":[161],"their":[163],"inventions":[164],"citations.":[166],"table":[168],"data":[169],"one":[172],"half":[173],"received":[179],"10":[183],"years.":[184],"As":[185],"conclusion,":[187],"methods":[190],"provide":[191],"possibility":[193],"deciding":[195],"technology":[196],"lifetime":[197],"predicting":[200],"determinants":[202],"flow":[205],"knowledge":[207],"through":[208]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":1}],"updated_date":"2026-08-21T09:56:20.448147","created_date":"2025-10-10T00:00:00"}
