HY

Hidemasa Yamakawa

SE Seiko Epson: 11 patents #1,668 of 7,774Top 25%
📍 Koumi, JP: #1 of 20 inventorsTop 5%
Overall (All Time): #467,028 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #TitleCo-InventorsDate
8248545 Projector 2012-08-21
7390095 Projector Kanji Yoshida, Joji Karasawa, Masafumi Sakaguchi 2008-06-24
7329007 Projector Joji Karasawa, Kanji Yoshida, Masafumi Sakaguchi 2008-02-12
7267443 Light-modulating projector Akitaka Yajima 2007-09-11
7216991 Lighting unit and projector including the same 2007-05-15
7156523 Projector Joji Karasawa, Masafumi Sakaguchi, Kanji Yoshida 2007-01-02
7123311 Projector with a micro lens array 2006-10-17
7086743 Rear projection type projector and its method of use 2006-08-08
6619800 Projector comprising a polarizer attached to a transmissive flexible plate material that bends responsive to changes in the shape of the polarizer Takeshi Takezawa, Nobuo Watanabe 2003-09-16
6491397 Illumination optical system and projector using the same Yasunori Ogawa, Koichi Akiyama 2002-12-10
6481850 Projector Takeshi Takezawa, Nobuo Watanabe 2002-11-19