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 26–38 of 38 patents

Patent #TitleCo-InventorsDate
5241111 Processes for producing 5-fluorobenzoic acids and their intermediates Masao Ohashi, Yutaka Yaginuma, Katsuhiko Takeda 1993-08-31
5208394 Process for producing chlorofluorobenzenes Akihiro Wada, Shinsuke Morikawa 1993-05-04
5093515 Fluorinated benzoyl compounds Osamu Yokokoji, Akihiro Tamaoki, Ryonosuke Yoshida, Yoshiyuki Murakami 1992-03-03
5072062 Bromination method Akihiro Wada 1991-12-10
5068449 Fluorinated benzoyl compounds Osamu Yokokoji, Akihiro Tamaoki 1991-11-26
5041647 Process for producing trifluoroacetic acid and trifluoroacetyl chloride Isao Gotoh, Hajime Yoneda, Tohru Ueno 1991-08-20
4994610 Process for preparing fluorinated benzoyl compounds Osamu Yokokoji, Akihiro Tamaoki 1991-02-19
4985588 Nucleus-fluorinated aromatic carboxylates and processes for their production Osamu Yokokouji 1991-01-15
4440948 Process for preparing methacrylic acid Yoshio Oda, Keiichi Uchida, Takeshi Morimoto 1984-04-03
4379768 Process for producing perfluorosuccinyl fluoride Masaaki Yamabe, Seiji Munekata, Isamu Kaneko 1983-04-12
4340750 Process for producing fluorovinyl ether Masaaki Yamabe, Seiji Munekata 1982-07-20
4318867 Process for producing difluoroiodoacetyl fluoride Masaaki Yamabe, Seiji Munekata 1982-03-09
4275226 Process for producing fluorovinyl ether Masaaki Yamabe, Seiji Munekata 1981-06-23