SK

Seisaku Kumai

AC Asahi Glass Co.: 35 patents #8 of 2,251Top 1%
OS Osi Specialties: 4 patents #7 of 79Top 9%
SC Seimi Chemical Co.: 4 patents #9 of 75Top 15%
KC Katayama Seiyakusyo Co.: 1 patents #7 of 15Top 50%
WI Witco: 1 patents #90 of 201Top 45%
Overall (All Time): #87,165 of 4,157,543Top 3%
38
Patents All Time

Issued Patents All Time

Showing 1–25 of 38 patents

Patent #TitleCo-InventorsDate
7015263 Process for recovering fluoropolymers Yutaka Fukatsu, Ryota Tokura 2006-03-21
6515102 Process for recovering fluoropolymers Yutaka Fukatsu, Harumi Mihara, Ryota Tokura 2003-02-04
6283360 Composition for preventing creeping of a flux for soldering Yutaka Fukatsu, Shunji Odaka 2001-09-04
6197989 Fluorinated organosilicon compounds and process for the preparation thereof Yutaka Furukawa, Mami Kotera, Robert Ruckle, Gerald J. Murphy 2001-03-06
5929292 Distillation column type production method Toru Shimoyama, Kazuya Oharu, Toru Ueno 1999-07-27
5914422 Method for producing fluorine-containing silicone compound Yutaka Furukawa, Mami Kotera, Kazuya Oharu, Toshihiko Toma 1999-06-22
5908950 Polyether modified fluoroalkylsiloxanes Jeffrey A. Cooke, Gerald J. Murphy, Yutaka Furukawa 1999-06-01
5861524 Oligomeric fluoroalkylsiloxanes as oil spreading agents Gerald J. Murphy, Jeffrey A. Cooke, Yutaka Furukawa, George A. Policello 1999-01-19
5834612 Fluorine-containing organic compound Yutaka Furukawa, Jeffery A. Cooke, Gerald J. Murphy, George A. Policello 1998-11-10
5834614 Method for producing a fluorine-containing silicone compound Yutaka Furukawa, Mami Kotera, Gerald J. Murphy 1998-11-10
5763709 Method for producing a hydrofluorocarbon Kazuya Oharu, Ryuji Seki 1998-06-09
5728903 Method for producing flourine-containing silicone compound Yutaka Furukawa, Mami Kotera, Kazuya Oharu, Toshihiko Toma 1998-03-17
5710317 Preparation of difluoroacetic acid fluoride and difluoroacetic acid esters Kazuya Oharu 1998-01-20
5663399 Method for producing fluorine-containing silicone compound Yutaka Furukawa, Mami Kotera, Kazuya Oharu, Toshihiko Toma 1997-09-02
5648504 Process for producing tetrafluorophthalic anhydride Ryuji Seki, Koji Sugimoto 1997-07-15
5648568 Method for producing a hydrofluorocarbon Kazuya Oharu, Ryuji Seki 1997-07-15
5646222 Polyfluorohydrocarbon group-containing monomers, their polymers and applications of the polymers Takashige Maekawa, Ryoko Osawa, Satoshi Kamata 1997-07-08
5621147 Trifluoro-2-(trans-4-substituted cyclohexyl) ethylenes and process for their production Osamu Yokokoji, Tamaki Simizu 1997-04-15
5618986 Method for producing a hydrofluorocarbon Kazuya Oharu, Ryuji Seki 1997-04-08
5568239 Stainproofing oil for a heat fixing roller Yutaka Furukawa, Mami Yoshino 1996-10-22
5565607 Polyfluorohydrocarbon group-containing monomers, their polymers and application of the polymers Takashige Maekawa, Ryoko Osawa, Satoshi Kamata 1996-10-15
5557017 Method for producing a hydrofluorocarbon Kazuya Oharu, Ryuji Seki 1996-09-17
5523476 Processes for producing tetrafluorophthalic anhydride and fluorobenzoic acids Ryuji Seki, Koji Sugimoto 1996-06-04
5349098 Process for producing chlorofluorobenzenes Akihiro Wada, Shinsuke Morikawa 1994-09-20
5332851 Processes for producing 5-fluorobenzoic acids and their intermediates Masao Ohashi, Yutaka Yaginuma, Katsuhiko Takeda 1994-07-26