TA

Takeshi Akiyama

Canon: 4 patents #232 of 2,505Top 10%
Overall (2002): #11,871 of 266,432Top 5%
4
Patents 2002

Issued Patents 2002

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
6426841 Optical apparatus Keisuke Araki, Tsunefumi Tanaka, Makoto Sekita, Kenichi Kimura, Norihiro Nanba +1 more 2002-07-30
6366411 Reflecting type optical system Kenichi Kimura, Tsunefumi Tanaka, Toshiya Kurihashi, Shigeo Ogura, Keisuke Araki +6 more 2002-04-02
6351333 Optical element and optical system having the same Keisuke Araki, Sadahiko Tsuji, Tsunefumi Tanaka, Kenichi Kimura, Norihiro Nanba +2 more 2002-02-26
6335837 Optical element and optical apparatus having it Michiharu Aratani 2002-01-01