Inventor · disambiguated record
Hitoshi Kumagai
Also filed as: KUMAGAI HITOSHI
11 granted patents·2 pending applications·259 citations·filing 1988–2025
90Inventor score
Files withCOSMO SOGO KENKYUSHO KK3TOYOTA CHUO KENKYUSHO KK3COSMO OIL CO LTD2KUMAGAI AKIRA2COSMO RES INST1
Top patents by PatentIndex Score
13 records- 0197USD320677SGas maskKUMAGAI AKIRA·Filed 1989·Granted Oct 8, 1991·91 cites·1 claims
- 0279US9512270B2Organic polymer porous bodyTOYOTA CHUO KENKYUSHO KK·Filed 2014·Granted Dec 6, 2016·2 cites·4 claims
- 0378US6406370B1Method for controlling character behavior in video games, video game machine, and computer-readable recording medium on which video game program is recordedKONAMI CO LTD·Filed 1999·Granted Jun 18, 2002·101 cites·21 claims
- 0469US5824808ACyclic phenol sulfide and process for producing the sameCOSMO SOGO KENKYUSHO KK·Filed 1996·Granted Oct 20, 1998·16 cites·29 claims
- 0568US5998631ACyclic phenol sulfide having at least one sulfinyl or sulfonyl group and process for producing the sameCOSMO SOGO KENKYUSHO KK·Filed 1997·Granted Dec 7, 1999·14 cites·6 claims
- 0668US2025379290A1Nitrogen battery, fuel synthesis apparatus, and fuel synthesis methodTOYOTA CHUO KENKYUSHO KK·Filed 2025·Application pending·0 cites
- 0759USD320868SGas maskKUMAGAI AKIRA·Filed 1989·Granted Oct 15, 1991·8 cites·1 claims
- 0857US5881358AComposition for extracting transition metal and method for extracting transition metal using the sameCOSMO SOGO KENKYUSHO KK·Filed 1997·Granted Mar 9, 1999·14 cites·14 claims
- 0952US10879015B2Viologen compound, method for producing the same, negative electrode active material, and electricity storage deviceTOYOTA CHUO KENKYUSHO KK·Filed 2018·Granted Dec 29, 2020·0 cites·8 claims
- 1043US5178781AProcess for producing over-based sulfurized alkaline earth metal phenate type detergentCOSMO OIL CO LTD·Filed 1990·Granted Jan 12, 1993·5 cites·34 claims
- 1133US6355671B1Sulfonated derivatives of cyclic phenol sulfides, process for the preparation thereof, separating and recovering agents containing cyclic phenol sulfides, methods for separation and recovery therewith, and drug compositions containing the sulfidesCOSMO RES INST·Filed 1998·Granted Mar 12, 2002·5 cites·12 claims
- 1233US4902436AProcess for producing a mixture of sulfides of alkaline earth metal salts of alkylhydroxybenzoic acid and alkylphenolCOSMO OIL CO LTD·Filed 1988·Granted Feb 20, 1990·3 cites·31 claims
- 1332US2008263630A1Confidential File Protecting Method and Confidential File Protecting Device for Security Measure ApplicationHARADA TATEKI·Filed 2006·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →