Inventor
Yoshitsugu Hirokawa
Inventor
Kamakura, JP
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C08Cprimary
C08CTreatment or chemical modification of rubbers14%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds14%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients10%
A61GTransport, personal conveyances, or accommodation specially adapted for patients or disabled persons5%
B22FWorking metallic powder5%
C07CAcyclic or carbocyclic compounds5%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds5%
C08JWorking-up5%
C09CTreatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties5%
C09DCoating compositions, e.g. paints, varnishes or lacquers5%
PatentTitleYear
10,391,555Silver nanowires, method for producing same, and ink20198,048,478'Method of manufacturing electrode for electrochemical device'20115,399,646'Alkylidenenorbornene polymer and process for producing the same'19955,248,746'Method of producing polymers'19934,982,465'Level-variable supporting apparatus'19914,732,930'Reversible, discontinuous volume changes of ionized isopropylacrylamide cells'19884,677,153'Method for modifying rubbers'19874,654,435'Process for addition reaction of unsaturated organic compounds'19874,412,031'Modified rubber composition employing a compound containing a carboxyl and an aldehyde group'19834,412,041'Process for modifying rubbers employing a compound containing a carboxyl and an aldehyde group'1983Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1983–1995Patents assigned to NIPPON ZEON CO (7)· patent assignee history
1983–1987Based in Yokohama, JP· patent location history
1987–1995Based in Kamakura, JP· patent location history
1988Patents assigned to MASSACHUSETTS INST TECHNOLOGY (1)· patent assignee history
1988Based in Winchester, MA, US· patent location history
2011Patents assigned to ZEON CORP (1)· patent assignee history
2011Based in Tokyo, JP· patent location history
2019Patents assigned to DOWA HOLDINGS CO LTD (1)· patent assignee history
2019Patents assigned to THE UNIV OF SHIGA PREFECTURE (1)· patent assignee history
2019Based in Shiga, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NIPPON ZEON CO | 7 | 1983–1995 |
| DOWA HOLDINGS CO LTD | 1 | 2019 |
| MASSACHUSETTS INST TECHNOLOGY | 1 | 1988 |
| THE UNIV OF SHIGA PREFECTURE | 1 | 2019 |
| ZEON CORP | 1 | 2011 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kamakura, JP | 4 | 1987–1995 |
| Yokohama, JP | 3 | 1983–1987 |
| Shiga, JP | 1 | 2019 |
| Tokyo, JP | 1 | 2011 |
| Winchester, Massachusetts, US | 1 | 1988 |