HK

Hitoshi Kumagai

CC Cosmo Oil Co.: 6 patents #19 of 229Top 9%
CI Cosmo Research Institute: 5 patents #5 of 93Top 6%
TL Toyota Central R&D Labs: 2 patents #528 of 1,657Top 35%
KO Konami: 1 patents #203 of 445Top 50%
Overall (All Time): #456,696 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #TitleCo-InventorsDate
10879015 Viologen compound, method for producing the same, negative electrode active material, and electricity storage device Yuka Makino, Masaki Hasegawa, Nobuhiro OGIHARA 2020-12-29
9512270 Organic polymer porous body Satoru Fujita, Satoru Yamamoto, Yoshiyuki Sakamoto, Takahiko Asaoka 2016-12-06
6406370 Method for controlling character behavior in video games, video game machine, and computer-readable recording medium on which video game program is recorded 2002-06-18
6355671 SULFONATED 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 SULFIDES Sotaro Miyano, Nobuhiko Iki, Toyohisa Fujimoto, Fumio Hamada, Shingo Kato +5 more 2002-03-12
5998631 Cyclic phenol sulfide having at least one sulfinyl or sulfonyl group and process for producing the same Setsuko Miyanari, Sotaro Miyano 1999-12-07
5881358 Composition for extracting transition metal and method for extracting transition metal using the same Sotaro Miyano, Nobuhiko Iki, Fumitaka Narumi, Naoya Morohashi 1999-03-09
5824808 Cyclic phenol sulfide and process for producing the same Takashi Hori, Mitsuharu Hasegawa, Yoko Sato, Hiroshi Munakata, Yoshihiro Sugawa 1998-10-20
5178781 Process for producing over-based sulfurized alkaline earth metal phenate type detergent Takashi Hori, Sanae Ueda, Yoshihiro Kojima, Masato Goto 1993-01-12
D320868 Gas mask Akira Kumagai 1991-10-15
D320677 Gas mask Akira Kumagai 1991-10-08
4902436 Process for producing a mixture of sulfides of alkaline earth metal salts of alkylhydroxybenzoic acid and alkylphenol Takashi Hori, Sanae Ueda, Yoshihiro Kojima 1990-02-20