Inventor
Isao Fujiwara
Inventor
Tokyo, JP
Overview
Patents· 35 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Gprimary
H01GCapacitors15%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy9%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters8%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution8%
Y02TClimate change mitigation technologies related to transportation8%
B60LPropulsion of electrically-propelled vehicles6%
G02BOptical elements, systems or apparatus6%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein5%
H01CResistors4%
H01JElectric discharge tubes or discharge lamps4%
PatentTitleYear
11,121,439Secondary battery202111,056,984Inverter control device202110,644,301Prismatic secondary battery and assembled battery using the same202010,535,860Nonaqueous electrolyte secondary battery202010,305,084Prismatic secondary battery and assembled battery using the same201910,243,195Nonaqueous electrolyte secondary battery20199,985,261Separator for nonaqueous electrolyte secondary battery and nonaqueous electrolyte secondary battery20189,703,008'Optical film, polarizing plate, and liquid crystal display device'20179,614,249'Separator for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery'20178,937,696'Cellulose acylate film, its production method, polarizer and liquid crystal display device'20158,836,897'Liquid crystal display device'20148,477,275'Optical film and liquid crystal display device'20137,928,686'Electric motor control device, electric vehicle, and hybrid electric vehicle'20117,489,099'Electrical drive control device and electrical drive control method'20097,460,353'High-voltage capacitor, high-voltage capacitor device and magnetron'20087,339,333'Motor drive control apparatus, motor drive control method and program of the same'20087,190,525'Diffusion film comprising transparent substrate and diffusion layer'20077,184,256'High-voltage feed-through capacitor and magnetron'20077,053,581'Electrically operated drive controller, electrically operated drive control method and its program'20067,049,779'Motor drive control apparatus, motor drive control method and program of the same'20067,049,782'Electrically operated drive controller, electrically operated drive control method and its program'20067,042,704'High-voltage capacitor, high-voltage capacitor device and magnetron'20066,995,820'Anisotropic spectral scattering films, polarizers and liquid crystal displays'20066,909,590'High voltage capacitor and magnetron'20056,510,038'High-voltage feedthrough capacitor'20036,344,962'High voltage capacitor and magnetron'20026,288,886'High voltage capacitor and magnetron'20015,950,469'Method and equipment for surface-hardening treatment of steel balls for a ball bearing'19995,886,592'Feedthrough ceramic capacitor having a grounding fitting for frictionally fixing the capacitor to a capacitor support'19995,729,425'High voltage capacitor and magnetron having porcelain dielectric material'19985,544,002'High voltage capacitor and magnetron'19965,353,550'Steel ball polishing apparatus'19945,315,791'Steel ball machining apparatus capable of eliminating foreign matter'19945,113,309'High-voltage through-type ceramic capacitor'19925,032,949'High-voltage through-type ceramic capacitor'1991Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–2008Patents assigned to TDK CORP (12)· patent assignee history
1994–1999Based in Nara, JP· patent location history
1996–2008Based in Tokyo, JP· patent location history
2006–2021Patents assigned to AISIN AW CO (7)· patent assignee history
2013–2017Patents assigned to FUJIFILM CORP (4)· patent assignee history
2013–2015Patents assigned to FUJIWARA ISAO (3)· patent assignee history
2013–2017Based in Kanagawa, JP· patent location history
2017–2021Patents assigned to PANASONIC CORP (7)· patent assignee history
2017–2018Based in Osaka, JP· patent location history
2019–2021Based in Hyogo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TDK CORP | 12 | 1991–2008 |
| AISIN AW CO | 7 | 2006–2021 |
| PANASONIC CORP | 7 | 2017–2021 |
| FUJIFILM CORP | 4 | 2013–2017 |
| FUJIWARA ISAOself | 3 | 2013–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 7 | 1996–2008 |
| Hyogo, JP | 5 | 2019–2021 |
| Kanagawa, JP | 4 | 2013–2017 |
| Nara, JP | 3 | 1994–1999 |
| Osaka, JP | 2 | 2017–2018 |