TK

Takeo Koyama

DC Daiichi Pharmaceutical Co.: 3 patents #70 of 399Top 20%
TK Toa Nenryo Kogyo: 3 patents #66 of 220Top 30%
DL Daiichi Sankyo Company, Limited: 2 patents #287 of 842Top 35%
Sumitomo Electric Industries: 2 patents #9,741 of 21,551Top 50%
AR Aruze: 1 patents #44 of 100Top 45%
Nsk: 1 patents #937 of 1,559Top 65%
Overall (All Time): #422,167 of 4,157,543Top 15%
12
Patents All Time

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #TitleCo-InventorsDate
8404847 Method for producing diamine derivative 2013-03-26
8357808 Process for producing diamine derivative Satoshi Kondo 2013-01-22
6515142 Process for preparing 2-phenyl-3-naphthylpropionic acid derivatives Yukio Yokoyama, Tatsuya Kobayashi 2003-02-04
6337405 Process for preparing 2-phenyl-3-naphthylpropionic acid derivatives Yukio Yokoyama, Tatsuya Kobayashi 2002-01-08
6325720 Game machine Nakayasu Tsukahara, Mitsuaki Kusanagi 2001-12-04
6252088 Process for preparing 2-phenyl-3-naphthylpropionic acid derivatives Yukio Yokoyama, Tatsuya Kobayashi 2001-06-26
5581453 Power supply with switched starting circuit Mitsunori Ueta 1996-12-03
5331354 Power supply apparatus for television receiver set and television receiver set including the same Takashi Nakano 1994-07-19
5236264 Linear bearing Toshio Matsubara, Magozo Hamamoto, Shoichiro Koike 1993-08-17
4775651 Process for the production of silanes Mamoru Tachikawa, Kazutoshi Takatsuna, Kouji Shiozawa, Yoshiharu Okumura 1988-10-04
4725420 Process for the production of silanes Mamoru Tachikawa, Kazutoshi Takatsuna, Kouji Shiozawa, Yoshiharu Okumura 1988-02-16
4691070 Catalyst, its method of preparation and process for its use in the hydrogenation of diolefins Teiji Nakamura, Eiichiro Nishikawa 1987-09-01