Inventor · disambiguated record
Masazumi Hasegawa
Also filed as: HASEGAWA MASAZUMI
10 granted patents·121 citations·filing 1985–2006
90Inventor score
Top patents by PatentIndex Score
10 records- 0181US4590223AProducing polyurethanes using hydroxy-alkyl piperazine catalyst compositionsTOYO SODA MFG CO LTD·Filed 1985·Granted May 20, 1986·16 cites·15 claims
- 0278US9028683B2Packing material with excellent hydrophilicity and process for producing the sameKOMIYA KATSUO·Filed 2006·Granted May 12, 2015·5 cites·12 claims
- 0368US5290899APhotosensitive material having a silicon-containing polymerTOSOH CORP·Filed 1992·Granted Mar 1, 1994·16 cites·1 claims
- 0465US5057396APhotosensitive material having a silicon-containing polymerTOSOH CORP·Filed 1989·Granted Oct 15, 1991·14 cites·5 claims
- 0558US5677380APlanarizing material and planarizing methodTOSOH CORP·Filed 1995·Granted Oct 14, 1997·19 cites·20 claims
- 0657US4638016AProcess for producing high density elastic polyurethane using a combination of 4-methyl-1-(2-dimethylaminoethyl) piperazine together with another tertiary amine catalystTOYO SODA MFG CO LTD·Filed 1985·Granted Jan 20, 1987·10 cites·8 claims
- 0755US5139922AMethod of making resist patternMATSUSHITA ELECTRONICS CORP·Filed 1990·Granted Aug 18, 1992·14 cites·14 claims
- 0844US5223376AMethod for producing fine patterns utilizing specific polymeric diazonium salt, or diazonium salt/sulfone group containing polymer, as photobleachable agentTOYO SODA MFG CO LTD·Filed 1992·Granted Jun 29, 1993·8 cites·8 claims
- 0940US5183722APositive photosensitive composition for forming lenses containing 1,2-naphthoquinone diazide sulfonate photosensitizer, alkali-soluble resin and thermosetting agent and process for producing the compositionTOSOH CORP·Filed 1990·Granted Feb 2, 1993·12 cites·8 claims
- 1039US4701473ACatalyst for producing polyurethane foams coated with skinTOYO SODA MFG CO LTD·Filed 1986·Granted Oct 20, 1987·7 cites·14 claims
Join the waitlist — get patent alerts
Get an alert when Masazumi Hasegawa 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 →