TO

Tatsuo Ohta

KO Konica: 7 patents #359 of 1,958Top 20%
KO Konica Minolta Opto: 7 patents #48 of 418Top 15%
KC Konishiroku Photo Industry Co.: 6 patents #151 of 894Top 20%
DC Donaldson Company: 1 patents #454 of 695Top 70%
HK Honda Giken Kogyo K.K.: 1 patents #97 of 311Top 35%
Overall (All Time): #186,061 of 4,157,543Top 5%
23
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7803455 Optical element and optical pickup apparatus Kunihiko Taka, Katsuya Nakamura 2010-09-28
7715302 Optical element and optical pickup apparatus Takashi Nozaki, Yayoi Eguro, Takeshi Kojima 2010-05-11
7682676 Optical element and optical pickup device Setsuo Tokuhiro 2010-03-23
7602679 Optical lens and information recording and reproducing device Kunihiko Taka 2009-10-13
7599119 Antireflection coating, optical element, and optical transceiver module Katsuya Nakamura, Setsuo Tokuhiro, Kunihiko Taka, Shingo Nakamura 2009-10-06
7554736 Objective lens and optical pickup apparatus Takashi Nozaki 2009-06-30
7161744 Objective lens and optical pickup apparatus Takashi Nozaki 2007-01-09
7085219 Optical lens and optical information recording and reproducing apparatus 2006-08-01
7079323 Surface treatment method and optical part Satoshi Nakano, Hiroshi Hirayama 2006-07-18
6903512 Half mirror film producing method and optical element comprising a half mirror film Satoshi Nakano, Yumi Muramatsu 2005-06-07
6813096 Optical lens and optical information recording and reproducing apparatus equipped therewith 2004-11-02
6771583 Optical component Takashi Nozaki 2004-08-03
6319598 Electromagnetic wave attenuating transparent member Satoshi Nakano, Setsuo Tokuhiro, Shingo Nakamura 2001-11-20
6104534 Antireflection coating with electromagnetic wave shielding effect and optical member having the antireflection coating Shingo Nakamura, Satoshi Nakano 2000-08-15
5920431 Optical member having antireflection film thereon Setsuo Tokuhiro, Satoshi Nakano 1999-07-06
4835061 Conductive laminate Hideo Watanabe, Mayumi Inaba 1989-05-30
4793923 Gradient density filter medium Teruichi Kadoya, Takashi Nagashima, Daisuke Horiuchi, Masayuki Okazaki, Naoki Ebisui 1988-12-27
4719152 Transparent conductive layer built-up material Mayumi Okasato, Hideo Watanabe 1988-01-12
4591544 Metal image forming materials with light sensitive resin layer and oblique angle deposited metal underlayer Nobumasa Sasa, Yuzuru Sato, Masanari Shindo 1986-05-27
4585689 Transparent conductive optical device and a process for the production thereof Katsuaki Komatsu 1986-04-29
4526132 Evaporator 1985-07-02
4287278 Two superimposed ion current formed images using photoconductive screen gives wider potential range for gradation control in electrophotography Sohji Shinozaki, Syusaku Yoshida, Hideo Ohba 1981-09-01
4189724 Electric restriction indicator with a contactless switch device for indicating a restriction in filter elements Minoru ONUMA, Masayoshi Nakamura, Takao Yamazaki 1980-02-19