Takeshi Koyama

Canon: 38 patents #1,203 of 19,416Top 7%

MC Mitsubishi Gas Chemical Company: 27 patents #20 of 1,727Top 2%

Ricoh Company: 13 patents #1,714 of 9,818Top 20%

JT Jtekt: 11 patents #122 of 1,969Top 7%

JG Jgc: 7 patents #3 of 393Top 1%

KT Kabushiki Kaisha Toshiba: 6 patents #4,898 of 21,451Top 25%

KC Koyo Machine Industries Co.: 5 patents #1 of 86Top 2%

SI Seiko Instruments: 4 patents #389 of 1,437Top 30%

SS Sii Semiconductor: 3 patents #27 of 108Top 25%

FL Fujitsu Ten Limited: 3 patents #174 of 996Top 20%

SO Sony: 2 patents #12,963 of 25,231Top 55%

AB Ablic: 2 patents #65 of 167Top 40%

3M: 2 patents #5,326 of 11,543Top 50%

HI Hitachi: 1 patents #17,742 of 28,497Top 65%

TO Toshiba: 1 patents #1,121 of 2,688Top 45%

YA Yazaki: 1 patents #2,077 of 3,427Top 65%

CC Catalysts & Chemicals Industries Co.: 1 patents #56 of 128Top 45%

RK Riso Kagaku: 1 patents #321 of 551Top 60%

Overall (All Time): #8,906 of 4,157,543Top 1%

126

Patents All Time

Issued Patents All Time

Showing 126–126 of 126 patents

Patent #	Title	Co-Inventors	Date
4594330	Fine amorphous powder and process for preparing fine powdery mixture of silicon nitride and silicon carbide	Takashi Suzuki, Takamasa Kawakami, Masami Orisaku, Kansei Izaki, Rieko Nakano +1 more	1986-06-10