Inventor
Yoshifumi Asai
Inventor
Tokyo, JP
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Fprimary
H01FMagnets22%
B66CCranes11%
E02FDredging11%
G02BOptical elements, systems or apparatus11%
H01GCapacitors11%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters11%
H03HImpedance networks, e.g. resonant circuits11%
LOC1311%
PatentTitleYear
D0918835Coil component202110,958,233Common mode filter202110,259,686Magnet work machine20197,495,892'Solid electrolytic capacitor'20096,586,508'Plastic lens material, production process of the material, composition for plastic lens, plastic lens obtained by curing the composition, and production process of the plastic lens'2003Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2003–2009Patents assigned to SHOWA DENKO KK (2)· patent assignee history
2003Based in Oita, JP· patent location history
2009–2021Based in Tokyo, JP· patent location history
2019Patents assigned to KOBELCO CONSTR MACH CO LTD (1)· patent assignee history
2021Patents assigned to TDK CORP (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SHOWA DENKO KK | 2 | 2003–2009 |
| TDK CORP | 2 | 2021 |
| KOBELCO CONSTR MACH CO LTD | 1 | 2019 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 4 | 2009–2021 |
| Oita, JP | 1 | 2003 |