TI

Takashi Iizuka

PE Pentax: 71 patents #7 of 761Top 1%
PE Pentax: 20 patents #14 of 396Top 4%
Canon: 8 patents #7,260 of 19,416Top 40%
ZE Zeon: 8 patents #79 of 734Top 15%
Dai Nippon Printing Co.: 4 patents #587 of 2,222Top 30%
SE Sega Enterprises: 4 patents #74 of 515Top 15%
SC Sumitomo Chemical: 3 patents #1,386 of 4,033Top 35%
ZC Zs Elastomers Co.: 3 patents #2 of 9Top 25%
AK Asahi Kogaku Kogyo K.K.: 3 patents #38 of 180Top 25%
HT Hoya Lens Thailand: 2 patents #37 of 94Top 40%
SU Subaru: 2 patents #474 of 1,684Top 30%
HO Hoya: 2 patents #523 of 1,290Top 45%
HI Hitachi: 1 patents #17,742 of 28,497Top 65%
HY Hymo: 1 patents #7 of 30Top 25%
AT AT&T: 1 patents #10,626 of 18,772Top 60%
📍 Tokyo, CO: #3 of 23 inventorsTop 15%
Overall (All Time): #8,196 of 4,157,543Top 1%
131
Patents All Time

Issued Patents All Time

Showing 126–131 of 131 patents

Patent #TitleCo-InventorsDate
4998790 Optical scanning apparatus Mitsunori Iima, Akira Morimoto 1991-03-12
4981352 Projection display device Yasuyuki Tejima, Hideki Nakamura 1991-01-01
4943146 Reading lens system 1990-07-24
4917457 Beam separating prism 1990-04-17
4819035 Color separation optical reading apparatus Yasunori Arai, Kazushi Yoshida 1989-04-04
4293868 Semiconductor device, method of manufacturing the same and application thereof Masayuki Horie 1981-10-06