{"id":"https://openalex.org/A5113568983","orcid":null,"observed_orcids":[],"display_name":"Hiromichi Ohashi","raw_author_names":["H. Ohashi","Hiromichi OHASHI","Hiromichi Ohashi","Hiromichi Ohashi Hiromichi Ohashi"],"full_name":"Hiromichi Ohashi Hiromichi Ohashi","works_count":204,"cited_by_count":3209,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":29,"i10_index":80},"ids":{"openalex":"https://openalex.org/A5113568983","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I114531698","ror":"https://ror.org/0112mx960","display_name":"Tokyo Institute of Technology","country_code":"JP","type":"education","lineage":["https://openalex.org/I114531698","https://openalex.org/I4400009020"]},"years":[2021,2020,2019,2018,2017,2015,2006,2004,2003]},{"institution":{"id":"https://openalex.org/I1292669757","ror":"https://ror.org/0326v3z14","display_name":"Toshiba (Japan)","country_code":"JP","type":"company","lineage":["https://openalex.org/I1292669757"]},"years":[2009,2005,2004,2003,2002,2000,1999,1998,1997,1993,1991,1987,1986,1985,1984,1983,1982,1981]},{"institution":{"id":"https://openalex.org/I207014233","ror":"https://ror.org/02278tr80","display_name":"Kyushu Institute of Technology","country_code":"JP","type":"education","lineage":["https://openalex.org/I207014233"]},"years":[2016]},{"institution":{"id":"https://openalex.org/I4210086780","ror":"https://ror.org/00097mb19","display_name":"Japan Science and Technology Agency","country_code":"JP","type":"government","lineage":["https://openalex.org/I1319490839","https://openalex.org/I4210086780"]},"years":[2015,2014,2013,2012]},{"institution":{"id":"https://openalex.org/I4405287237","ror":"https://ror.org/04h9jpb91","display_name":"Advanced Power Electronics Research Center","country_code":"JP","type":"facility","lineage":["https://openalex.org/I4405287237","https://openalex.org/I73613424"]},"years":[2011,2006]},{"institution":{"id":"https://openalex.org/I69740276","ror":"https://ror.org/00ws30h19","display_name":"Tokyo Metropolitan University","country_code":"JP","type":"education","lineage":["https://openalex.org/I69740276"]},"years":[2013,2012]},{"institution":{"id":"https://openalex.org/I73613424","ror":"https://ror.org/01703db54","display_name":"National Institute of Advanced Industrial Science and Technology","country_code":"JP","type":"government","lineage":["https://openalex.org/I73613424"]},"years":[2015,2014,2013,2012,2011,2010,2009,2008,2007,2006,2005,2004,2003,2002,2001]}],"last_known_institutions":[{"id":"https://openalex.org/I114531698","ror":"https://ror.org/0112mx960","display_name":"Tokyo Institute of Technology","country_code":"JP","type":"education","lineage":["https://openalex.org/I114531698","https://openalex.org/I4400009020"]}],"topics":[{"id":"https://openalex.org/T10361","display_name":"Silicon Carbide Semiconductor Technologies","count":161,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10472","display_name":"Semiconductor materials and devices","count":79,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10228","display_name":"Multilevel Inverters and Converters","count":58,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10175","display_name":"Advanced DC-DC Converters","count":51,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10099","display_name":"GaN-based semiconductor devices and materials","count":47,"subfield":{"id":"https://openalex.org/subfields/3104","display_name":"Condensed Matter Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"topic_share":[{"id":"https://openalex.org/T10361","display_name":"Silicon Carbide Semiconductor Technologies","value":0.0007365,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10228","display_name":"Multilevel Inverters and Converters","value":0.0002088,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10099","display_name":"GaN-based semiconductor devices and materials","value":0.0002021,"subfield":{"id":"https://openalex.org/subfields/3104","display_name":"Condensed Matter Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12529","display_name":"Ga2O3 and related materials","value":0.0001801,"subfield":{"id":"https://openalex.org/subfields/2504","display_name":"Electronic, Optical and Magnetic Materials"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11102","display_name":"HVDC Systems and Fault Protection","value":0.000175,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","score":0.9265381097793579},{"id":"49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","score":0.7923393249511719},{"id":"119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","score":0.6888413429260254},{"id":"165801399","wikidata":"https://www.wikidata.org/wiki/Q25428","display_name":"Voltage","score":0.6221715211868286},{"id":"127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","score":0.5783058404922485}],"counts_by_year":[{"year":1977,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1980,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1981,"works_count":4,"oa_works_count":1,"cited_by_count":0},{"year":1982,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":1983,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1984,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1985,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1986,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1987,"works_count":7,"oa_works_count":2,"cited_by_count":0},{"year":1988,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1989,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1991,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1993,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1997,"works_count":5,"oa_works_count":1,"cited_by_count":0},{"year":1998,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":1999,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2000,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2001,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2002,"works_count":14,"oa_works_count":1,"cited_by_count":0},{"year":2003,"works_count":10,"oa_works_count":0,"cited_by_count":0},{"year":2004,"works_count":5,"oa_works_count":1,"cited_by_count":0},{"year":2005,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2006,"works_count":18,"oa_works_count":4,"cited_by_count":0},{"year":2007,"works_count":14,"oa_works_count":2,"cited_by_count":0},{"year":2008,"works_count":10,"oa_works_count":2,"cited_by_count":0},{"year":2009,"works_count":14,"oa_works_count":1,"cited_by_count":0},{"year":2010,"works_count":13,"oa_works_count":3,"cited_by_count":0},{"year":2011,"works_count":7,"oa_works_count":1,"cited_by_count":0},{"year":2012,"works_count":4,"oa_works_count":1,"cited_by_count":123},{"year":2013,"works_count":14,"oa_works_count":2,"cited_by_count":168},{"year":2014,"works_count":5,"oa_works_count":1,"cited_by_count":174},{"year":2015,"works_count":7,"oa_works_count":1,"cited_by_count":153},{"year":2016,"works_count":6,"oa_works_count":0,"cited_by_count":150},{"year":2017,"works_count":4,"oa_works_count":0,"cited_by_count":152},{"year":2018,"works_count":7,"oa_works_count":0,"cited_by_count":177},{"year":2019,"works_count":7,"oa_works_count":1,"cited_by_count":173},{"year":2020,"works_count":3,"oa_works_count":0,"cited_by_count":172},{"year":2021,"works_count":1,"oa_works_count":0,"cited_by_count":140},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":145},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":113},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":127},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":98},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":72}],"display_name_alternatives":["H. Ohashi","Hiromichi OHASHI","Hiromichi Ohashi","Hiromichi Ohashi Hiromichi Ohashi"],"block_key":"h ohashi","works_api_url":"https://api.openalex.org/works?filter=author.id:A5113568983","awards_count":0,"awards_api_url":"https://api.openalex.org/awards?filter=investigators.author.id:A5113568983","updated_date":"2026-11-10T14:30:39","created_date":"2016-06-24T00:00:00"}