Katsumi Tanaka

Katsumi Tanaka

SE Seiko Epson: 8 patents #2,198 of 7,774Top 30%

Fujitsu Limited: 5 patents #6,029 of 24,456Top 25%

TC Toho Titanium Co.: 4 patents #28 of 153Top 20%

NT National Institute Of Information And Communications Technology: 4 patents #71 of 517Top 15%

SC Sanyo Electric Co.: 3 patents #1,910 of 6,347Top 35%

Canon: 3 patents #11,241 of 19,416Top 60%

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

NE Nec: 3 patents #4,195 of 14,502Top 30%

FI Fujifilm Business Innovation: 2 patents #693 of 1,659Top 45%

KT Kabushiki Kaisha Toshiba: 2 patents #9,982 of 21,451Top 50%

Ricoh Company: 2 patents #5,693 of 9,818Top 60%

RC Rion Co.: 2 patents #29 of 139Top 25%

SC Showa Denko Packaging Co.: 2 patents #14 of 39Top 40%

OM Omron: 1 patents #1,808 of 3,089Top 60%

TC Toyoda Gosei Co.: 1 patents #1,271 of 2,296Top 60%

W& Whitaker &: 1 patents #650 of 1,437Top 50%

Mitsubishi Electric: 1 patents #15,491 of 25,717Top 65%

NM Nihon Micronics: 1 patents #96 of 171Top 60%

SA Showa Aluminum: 1 patents #122 of 253Top 50%

GK Gkn Driveline Torque Technology Kk: 1 patents #17 of 44Top 40%

TS Tochigi Fuji Sangyo: 1 patents #33 of 99Top 35%

IC Iseki & Co.: 1 patents #58 of 117Top 50%

TC Tottori Sanyo Electric Co.: 1 patents #85 of 224Top 40%

NC Namba Press Works Co.: 1 patents #10 of 37Top 30%

NC Nippon Shokubai Co.: 1 patents #656 of 1,108Top 60%

ND Ntt Docomo: 1 patents #1,030 of 1,706Top 65%

📍 Yokohama, MO: #10 of 29 inventorsTop 35%

Overall (All Time): #48,084 of 4,157,543Top 2%

Issued Patents All Time

Showing 51–53 of 53 patents

Patent #	Title	Co-Inventors	Date
4247190	Lens assembly coupling device for camera system	Shigeru Hashimoto, Taizo Mitani, Takashi Isobe, Masao Aoyagi, Akiyasu Sumi	1981-01-27
4240699	Zoom lens having extended focusing range	Yasuhisa Sato, Sadahiko Tsuji	1980-12-23
4230403	Mounting for interchangeable camera lens assembly with diaphragm means	Shigeru Hashimoto, Taizo Mitani, Takashi Isobe, Masao Aoyagi, Akiyasu Sumi	1980-10-28