Inventor · disambiguated record
Mitsumasa Kojima
Also filed as: KOJIMA MITSUMASA
9 granted patents·1 pending application·104 citations·filing 1984–2008
89Inventor score
Top patents by PatentIndex Score
10 records- 0171US4958001ADicyclohexyl-3,4,3',4'-tetracarboxylic acid or dianhydride thereof and polyamide-acid and polyimide obtained therefromHITACHI CHEMICAL CO LTD·Filed 1988·Granted Sep 18, 1990·9 cites·11 claims
- 0270US4565767ALight-sensitive polymer composition with poly(amic acid), bisazide, and tertiary amine compoundHITACHI LTD·Filed 1984·Granted Jan 21, 1986·24 cites·11 claims
- 0369US6071667APhotosensitive resin composition containing a photosensitive polyamide resinHITACHI CHEMICAL CO LTD·Filed 1996·Granted Jun 6, 2000·17 cites·18 claims
- 0465US5115089AProcesses for preparation of polyimide-isoindroquinazolinedione and precursor thereofHITACHI CHEMICAL CO LTD·Filed 1988·Granted May 19, 1992·14 cites·13 claims
- 0559US6309791B1Polyimide precursor, polyimide and their useHITACHI CHEMICAL CO LTD·Filed 2000·Granted Oct 30, 2001·3 cites·24 claims
- 0657US5262277APhotosensitive resin composition and photosensitive element using the sameHITACHI CHEMICAL COMPANY INC·Filed 1992·Granted Nov 16, 1993·11 cites·16 claims
- 0752US2009020588A1Method for manufacturing product involving solder joining, solder joining apparatus, soldering condition verification method, reflow apparatus, and solder joining methodFUJITSU LTD·Filed 2008·Application pending·0 cites
- 0851US5811218APhotoinitiator compositions including amino acids, coumarin and titanocene and photosensitive materials using the sameHITACHI CHEMICAL CO LTD·Filed 1995·Granted Sep 22, 1998·17 cites·4 claims
- 0949US4847358AProcess for producing polyamide acid having siloxane bonds and polyimide having siloxane bonds and isoindoloquinazolinedione ringsHITACHI CHEMICAL CO LTD·Filed 1987·Granted Jul 11, 1989·8 cites·12 claims
- 1031US6143475APolyimide precursor, polyimide and their useHITACHI CHEMICAL CO LTD·Filed 1998·Granted Nov 7, 2000·1 cites·22 claims
Join the waitlist — get patent alerts
Get an alert when Mitsumasa Kojima files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →