Inventor
Kouhei Takemura
Inventor
Osaka, JP
Overview
Patents· 16 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C08Lprimary
C08LCompositions of macromolecular compounds23%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds14%
G02BOptical elements, systems or apparatus14%
A63BApparatus for physical training, gymnastics, swimming, climbing, or fencing12%
C07DHeterocyclic compounds7%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients7%
F16JPistons7%
C08JWorking-up5%
A62DChemical means for extinguishing fires or for combating or protecting against harmful chemical agents2%
C07CAcyclic or carbocyclic compounds2%
PatentTitleYear
11,078,363Optical material composition202110,047,043Thiol compound composition for optical material20189,914,799'Composition for optical material and method for producing same, and optical material produced from composition for optical material'20189,663,618'Optical material composition, and application for same'20179,322,476'Vehicle engine oil seal'20169,322,477'Vehicle transmission oil seal'20169,322,957'Method for producing optical material'20169,260,566'Composition for optical materials, process for production thereof, and optical materials made from the composition'20168,931,452'Vehicle valve stem seal'20158,796,384'Crosslinkable fluorine rubber composition, fluorine rubber molded article, and method for producing the same'20146,645,089'Golf ball'20036,354,966'Multi-piece solid golf ball'20026,096,830'Thermoplastic elastomer composition, process for producing the same and golf ball using the same for cover'20005,833,552'Golf ball'19985,733,977'Solid golf ball'19985,653,647'Solid golf ball'1997Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1997–2003Patents assigned to SUMITOMO RUBBER IND (6)· patent assignee history
1997–2002Based in Nara, JP· patent location history
2003Based in Kobe, JP· patent location history
2014–2016Patents assigned to DAIKIN IND LTD (4)· patent assignee history
2014–2016Patents assigned to TAKEMURA KOUHEI (4)· patent assignee history
2014–2016Patents assigned to YANAGIGUCHI TOMIHIKO (4)· patent assignee history
2014–2016Based in Settsu, JP· patent location history
2016–2021Patents assigned to MITSUBISHI GAS CHEMICAL CO (6)· patent assignee history
2016–2018Based in Osaka, JP· patent location history
2021Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MITSUBISHI GAS CHEMICAL CO | 6 | 2016–2021 |
| SUMITOMO RUBBER IND | 6 | 1997–2003 |
| DAIKIN IND LTD | 4 | 2014–2016 |
| TAKEMURA KOUHEIself | 4 | 2014–2016 |
| YANAGIGUCHI TOMIHIKO | 4 | 2014–2016 |
Locations
| Location | Patents | Span |
|---|---|---|
| Osaka, JP | 5 | 2016–2018 |
| Nara, JP | 5 | 1997–2002 |
| Settsu, JP | 4 | 2014–2016 |
| Tokyo, JP | 1 | 2021 |
| Kobe, JP | 1 | 2003 |