Inventor
Hiroshige Nakagawa
Inventor
Tokyo, JP
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Jprimary
H01JElectric discharge tubes or discharge lamps16%
C07GCompounds of unknown constitution11%
C08LCompositions of macromolecular compounds11%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form5%
B44CProducing decorative effects5%
C03BManufacture, shaping, or supplementary processes5%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds5%
C08HDerivatives of natural macromolecular compounds5%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients5%
C09DCoating compositions, e.g. paints, varnishes or lacquers5%
PatentTitleYear
10,138,377Lignin derivative, lignin resin composition, rubber composition, and molding material201810,059,793Lignin resin composition, cured product, and molded product20189,511,570'Surface layer material and melamine decorative laminate'20165,358,575'Method for blackening Ni-Fe shadow mask and mesh belt type blackening lehr for carrying out the method'19945,201,682'CRT exhaust oven'19934,752,268'Exhaust oven for cathode ray tubes'1988Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1988–1993Patents assigned to CHUGAI RO KOGYO KAISHA LTD (2)· patent assignee history
1988–1994Based in Sakurai, JP· patent location history
1994Patents assigned to CHUGAI RO COMPANY LIMITED (1)· patent assignee history
2016–2018Patents assigned to SUMITOMO BAKELITE CO (3)· patent assignee history
2016Patents assigned to KIFUKU TOSHINORI (1)· patent assignee history
2016Patents assigned to NAKAGAWA HIROSHIGE (1)· patent assignee history
2016–2018Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SUMITOMO BAKELITE CO | 3 | 2016–2018 |
| CHUGAI RO KOGYO KAISHA LTD | 2 | 1988–1993 |
| CHUGAI RO COMPANY LIMITED | 1 | 1994 |
| KIFUKU TOSHINORI | 1 | 2016 |
| NAKAGAWA HIROSHIGEself | 1 | 2016 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 3 | 2016–2018 |
| Sakurai, JP | 3 | 1988–1994 |