Assignee
SHOWA CHEM
JP·4 granted patents·25 citations·filing 1981–2021
Top patents by PatentIndex Score
4 records- 0160US5932644AChlorine-containing resin with LI hydroxide (monohydrate) or LI carbonateSHOWA CHEM·Filed 1997·Granted Aug 3, 1999·21 cites·4 claims
- 0256US11860539B2Polyvinyl acetate based photopolymerSHOWA CHEM·Filed 2021·Granted Jan 2, 2024·0 cites·11 claims
- 0334US4393216AMethod of producing aminobenzimidazolonesSHOWA CHEM·Filed 1981·Granted Jul 12, 1983·1 cites·13 claims
- 0421US5246658AMethod of manufacturing working gloveSHOWA CHEM·Filed 1991·Granted Sep 21, 1993·3 cites·1 claims
Join the waitlist — get patent alerts
Get an alert when SHOWA CHEM files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →