Katsumi Watanabe

SO Sony: 14 patents #3,108 of 25,231Top 15%

KS Kobe Steel: 10 patents #124 of 1,773Top 7%

DC Dainippon Screen Mfg. Co.: 9 patents #63 of 977Top 7%

KS Kobe Steel: 8 patents #62 of 2,031Top 4%

OZ Ozen: 8 patents #2 of 13Top 20%

FA Furukawa-Sky Aluminum: 4 patents #2 of 80Top 3%

AC Amada Co.: 3 patents #101 of 479Top 25%

Casio Computer Co.: 3 patents #744 of 1,970Top 40%

DE Denso: 3 patents #3,857 of 11,792Top 35%

FC Furukawa Electric Co.: 3 patents #622 of 2,370Top 30%

HI Hitachi: 3 patents #10,712 of 28,497Top 40%

PA Panasonic: 2 patents #9,678 of 21,108Top 50%

NE Nec Electronics: 2 patents #384 of 1,789Top 25%

Nichia: 2 patents #761 of 1,531Top 50%

FC Fuji Electric Co.: 1 patents #1,354 of 2,643Top 55%

DC Dnp Fine Chemicals Co.: 1 patents #17 of 43Top 40%

SA Sankosha: 1 patents #17 of 39Top 45%

TC Tohoku Electric Power Company: 1 patents #65 of 246Top 30%

TC Toshiba Machine Co.: 1 patents #70 of 186Top 40%

TC Toyo Ink Sc Holdings Co.: 1 patents #51 of 144Top 40%

TC Toyocolor Co.: 1 patents #29 of 71Top 45%

UI Ulvac-Phi, Incorporated: 1 patents #6 of 25Top 25%

WU Waseda University: 1 patents #116 of 411Top 30%

CC Clarion Co.: 1 patents #397 of 721Top 60%

HG HGST: 1 patents #253 of 483Top 55%

FC Furakawa Electric Co.: 1 patents #1 of 49Top 3%

J- J-Devices: 1 patents #31 of 53Top 60%

FL Fujitsu General Limited: 1 patents #189 of 325Top 60%

Overall (All Time): #22,912 of 4,157,543Top 1%

Patents All Time

Issued Patents All Time

Showing 76–79 of 79 patents

Patent #	Title	Co-Inventors	Date
4286789	Simplified record player	—	1981-09-01
4252326	Sound reproducing device	Yutaka Shiseki, Eishi Koike	1981-02-24
D254785	Cartridge record phonograph	—	1980-04-22
4195843	Simplified motor assembly and related electrical connection in a _sound reproducing device	Yutaka Shiseki, Eishi Koike	1980-04-01