Inventor · disambiguated record
Keisuke Murayama
Also filed as: HIGASHIDA SUSUMU · MURAYAMA KEISUKE
17 granted patents·240 citations·filing 1973–1978
94Inventor score
Files withSANKYO CO17
Top patents by PatentIndex Score
17 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
- 0489US3940363APiperidine derivatives and their use as stabilizersSANKYO CO·Filed 1973·Granted Feb 24, 1976·29 cites·12 claims
- 0588US3975357AStabilized synthetic polymer compositionsSANKYO CO·Filed 1974·Granted Aug 17, 1976·27 cites·8 claims
- 0681US4066615APolymer compositions containing piperidine derivatives as stabilizersSANKYO CO·Filed 1975·Granted Jan 3, 1978·14 cites·15 claims
- 0775US4016168APiperidine derivativesSANKYO CO·Filed 1975·Granted Apr 5, 1977·16 cites·2 claims
- 0875US3963730AProcess for preparing triacetonamineSANKYO CO·Filed 1974·Granted Jun 15, 1976·8 cites·44 claims
- 0974US4212974APiperidine derivativesSANKYO CO·Filed 1978·Granted Jul 15, 1980·8 cites·10 claims
- 1073US4061616AStabilization of synthetic polymersSANKYO CO·Filed 1975·Granted Dec 6, 1977·7 cites·8 claims
- 1172US3984371AStabilization of synthetic polymersSANKYO CO·Filed 1973·Granted Oct 5, 1976·13 cites·9 claims
- 1269US4007158ANovel piperidine derivatives for the stabilization of synthetic polymersSANKYO CO·Filed 1974·Granted Feb 8, 1977·7 cites·6 claims
- 1364US3959298AProcess for preparing triacetonamineSANKYO CO·Filed 1974·Granted May 25, 1976·5 cites·46 claims
- 1455US4125533APiperidine derivativesSANKYO CO·Filed 1976·Granted Nov 14, 1978·8 cites·4 claims
- 1553US3940401A4,4-(O-phenylenedioxy)-2,2,6,6-tetramethyl piperidineSANKYO CO·Filed 1974·Granted Feb 24, 1976·3 cites·1 claims
- 1644US3933735A4-Piperidone derivatives, their preparation and their use as stabilizersSANKYO CO·Filed 1974·Granted Jan 20, 1976·4 cites·7 claims
- 1727US4076835AEster of chrysanthemic acid, process for the preparation thereof and insecticidal compositions containing themSANKYO CO·Filed 1975·Granted Feb 28, 1978·0 cites·2 claims
Join the waitlist — get patent alerts
Get an alert when Keisuke Murayama 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 →