MY

Masaaki Yoshikawa

Ricoh Company: 113 patents #27 of 9,818Top 1%
Yamaha Motor: 26 patents #18 of 2,310Top 1%
Aisin Seiki Kabushiki Kaisha: 10 patents #313 of 3,782Top 9%
MM Mitsubishi Mining: 4 patents #189 of 2,247Top 9%
AC Asahi Glass Co.: 4 patents #490 of 2,251Top 25%
NC Nippon Metal Industry Co.: 4 patents #1 of 22Top 5%
PA Panasonic: 3 patents #7,617 of 21,108Top 40%
Sumitomo Electric Industries: 3 patents #7,735 of 21,551Top 40%
Mitsubishi Electric: 2 patents #11,187 of 25,717Top 45%
NC Nikkiso Co.: 2 patents #107 of 287Top 40%
NK Nippon Gohsei Kagaku Kogyo: 2 patents #30 of 142Top 25%
NM Nisshin Flour Milling: 2 patents #106 of 320Top 35%
RI Riken: 2 patents #375 of 1,824Top 25%
TC Tohoku Ricoh Co.: 2 patents #69 of 204Top 35%
DC Dena Co.: 1 patents #81 of 210Top 40%
BL Brumby Corporation Limited: 1 patents #13 of 35Top 40%
IR Institute Of Physical And Chemical Research: 1 patents #66 of 172Top 40%
KC Kyowa Hakko Kogyo Co.: 1 patents #549 of 943Top 60%
KK Kirin Beer Kabushiki Kaisha: 1 patents #149 of 379Top 40%
TD Tokyo R & D: 1 patents #22 of 42Top 55%
Fujitsu Limited: 1 patents #14,843 of 24,456Top 65%
Overall (All Time): #3,964 of 4,157,543Top 1%
186
Patents All Time

Issued Patents All Time

Showing 176–186 of 186 patents

Patent #TitleCo-InventorsDate
4784680 Method of and apparatus for manufacturing float glass Yasuo Sato, Tsunehiro Saito, Hiroshi Mase, Katsuhiro Haruyama 1988-11-15
4660529 Four-cycle engine 1987-04-28
4651696 Four-stroke internal combustion engine Kazuo Aoi 1987-03-24
4624222 Intake valve structure for internal combustion engine 1986-11-25
4622940 Porting arrangement for internal combustion engine 1986-11-18
4617896 Internal combustion engine having three intake valves per cylinder 1986-10-21
4615309 Valve actuating mechanism for internal combustion engine 1986-10-07
4612885 Camshaft bearing arrangement for overhead cam engine 1986-09-23
4572117 Valve arrangement for an internal combustion engine 1986-02-25
4323041 Multi-cylinder internal combustion engine of fuel injection type Yoshinori Endo 1982-04-06
4232044 Enzymatic improvement of protein flavor Hideo Chiba, Ryuzo Sasaki, Naofumi Takahashi, Etsuro Sugimoto, Hirotoshi Samejima 1980-11-04