KK

Kazufumi Kai

SK Showa Denko K.K.: 11 patents #95 of 1,736Top 6%
RI Riken: 1 patents #679 of 1,824Top 40%
SD Showa Denko: 1 patents #231 of 593Top 40%
📍 Ooita, JP: #36 of 516 inventorsTop 7%
Overall (All Time): #422,720 of 4,157,543Top 15%
12
Patents All Time

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #TitleCo-InventorsDate
8518524 Transparent composite material Yasushi Kadowaki, Ryoji Toita 2013-08-27
8163860 Norbornene copolymer and production method thereof Shojiro Kaita, Nobuyuki Kibino 2012-04-24
8119039 Transparent conductive substrate Yasushi Kadowaki 2012-02-21
7939612 Radically polymerizable compound having a cyclic dithiocarbonate group Keisuke Ohta, Yasuyuki OYAMA 2011-05-10
7569327 Curable polymer compound Hirotoshi Kamata, Keisuke Ohta 2009-08-04
7518001 Radically polymerizable sulfur-containing compound and radically polymerizable sulfur-containing polymer Keisuke Ohta, Tsuneo Tajima, Yasuyuki OYAMA 2009-04-14
7049350 Polymerizable compound, polymerizable composition and cured product containing the compound Yoshihiro Honda, Keisuke Ohta, Kazuhiko Ooga, Hiroshi Uchida 2006-05-23
7038076 Fumarate derivative, method for producing the same Keisuke Ohta, Yasushi Kadowaki, Hiroshi Uchida 2006-05-02
6846900 POLYVALENT CARBOXYLIC ACID ESTER, PROCESS FOR PRODUCING THE CARBOXYLIC ACID ESTER, PLASTIC LENS COMPOSITION USING THE CARBOXYLIC ESTER, PLASTIC LENS OBTAINED BY CURING THE COMPOSITION AND PROCESS FOR PRODUCING THE PLASTIC LENS Kazuhiko Ooga, Tsuneo Tajima, Hiroshi Uchida 2005-01-25
6740721 Plastic lens composition, plastic lens, and process for producing the plastic lens Kazuhiko Ooga, Tsuneo Tajima, Hiroshi Uchida 2004-05-25
6376702 Ether compound, production thereof and curable compositions Keisuke Ohta, Hiroshi Uchida 2002-04-23
6204410 Ether compounds and process for producing the same Keisuke Ohta, Hiroshi Uchida 2001-03-20