Inventor · disambiguated record
Hisayou Ohsawa
Also filed as: OHSAWA HISAYOU · YOSHIOKA TAKAO
5 granted patents·113 citations·filing 1973–1978
82Inventor score
Files withSANKYO CO5
Top patents by PatentIndex Score
5 records- 0194US3941744APiperidine derivatives and their use as stabilizersSANKYO CO·Filed 1973·Granted Mar 2, 1976·37 cites·24 claims
- 0293US4241208APiperidine derivativesSANKYO CO·Filed 1978·Granted Dec 23, 1980·33 cites·30 claims
- 0389US3975462APiperidine-spiro-hydantoin derivatives and their use as stabilizersSANKYO CO·Filed 1974·Granted Aug 17, 1976·21 cites·16 claims
- 0481US4066615APolymer compositions containing piperidine derivatives as stabilizersSANKYO CO·Filed 1975·Granted Jan 3, 1978·14 cites·15 claims
- 0552US4005094APiperidine-spiro-hydantoin derivativesSANKYO CO·Filed 1975·Granted Jan 25, 1977·8 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →