Inventor
Shozaburo Imai
Inventor
Akashi, JP
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C08Gprimary
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds17%
G11BInformation storage based on relative movement between record carrier and transducer17%
C08LCompositions of macromolecular compounds11%
G02BOptical elements, systems or apparatus11%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests11%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds6%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients6%
C09JAdhesives6%
C14CChemical treatment of hides, skins or leather, e.g. tanning, impregnating, finishing6%
D06MTreatment, not provided for elsewhere in class d06, of fibres, threads, yarns, fabrics, feathers or fibrous goods made from such materials6%
PatentTitleYear
5,135,791'Optical device'19924,812,345'Optical disk substrate'19894,785,053'Optical resin material having improved birefringence'19884,316,004'Process for producing oxybenzoyl copolyesters'19824,313,870'Process for producing polycondensates'19824,311,823'Process for producing aromatic polyesters'19824,001,159'Aqueous dispersion of olefin-acrylate copolymer'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1992Patents assigned to SUMITOMO CHEMICAL CO (7)· patent assignee history
1977Based in Ibaragi, JP· patent location history
1982Based in Akashi, JP· patent location history
1988Based in Niihama, JP· patent location history
1989–1992Based in Toyonaka, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SUMITOMO CHEMICAL CO | 7 | 1977–1992 |
Locations
| Location | Patents | Span |
|---|---|---|
| Akashi, JP | 3 | 1982 |
| Toyonaka, JP | 2 | 1989–1992 |
| Niihama, JP | 1 | 1988 |
| Ibaragi, JP | 1 | 1977 |