Inventor
Mitsumasa Kojima
Inventor
Hitachi, JP
Overview
Patents· 9 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 bonds28%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices24%
H05KPrinted circuits12%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h1012%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%
C07CAcyclic or carbocyclic compounds4%
C07DHeterocyclic compounds4%
C08LCompositions of macromolecular compounds4%
C09KMaterials for miscellaneous applications, not provided for elsewhere4%
PatentTitleYear
6,309,791'Polyimide precursor, polyimide and their use'20016,143,475'Polyimide precursor, polyimide and their use'20006,071,667'Photosensitive resin composition containing a photosensitive polyamide resin'20005,811,218'Photoinitiator compositions including amino acids, coumarin and titanocene and photosensitive materials using the same'19985,262,277'Photosensitive resin composition and photosensitive element using the same'19935,115,089'Processes for preparation of polyimide-isoindroquinazolinedione and precursor thereof'19924,958,001'Dicyclohexyl-3,4,3\',4\'-tetracarboxylic acid or dianhydride thereof and polyamide-acid and polyimide obtained therefrom'19904,847,358'Process for producing polyamide acid having siloxane bonds and polyimide having siloxane bonds and isoindoloquinazolinedione rings'19894,565,767'Light-sensitive polymer composition with poly(amic acid), bisazide, and tertiary amine compound'1986Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1986–2001Patents assigned to HITACHI CHEMICAL CO LTD (8)· patent assignee history
1986Patents assigned to HITACHI LTD (1)· patent assignee history
1986–1998Based in Hitachi, JP· patent location history
1993Patents assigned to HITACHI CHEMICAL COMPANY INC (1)· patent assignee history
2000–2001Based in Niiza, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI CHEMICAL CO LTD | 8 | 1986–2001 |
| HITACHI CHEMICAL COMPANY INC | 1 | 1993 |
| HITACHI LTD | 1 | 1986 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hitachi, JP | 6 | 1986–1998 |
| Niiza, JP | 3 | 2000–2001 |