EY

Eiji Yamakawa

MC Minolta Co.: 12 patents #154 of 1,416Top 15%
Casio Computer Co.: 10 patents #228 of 1,970Top 15%
MI Minolta: 8 patents #233 of 1,109Top 25%
Kyocera: 1 patents #2,054 of 3,732Top 60%
📍 Tama, JP: #12 of 402 inventorsTop 3%
Overall (All Time): #111,965 of 4,157,543Top 3%
32
Patents All Time

Issued Patents All Time

Showing 1–25 of 32 patents

Patent #TitleCo-InventorsDate
12140909 Display apparatus and watch 2024-11-12
11796965 Display apparatus and watch 2023-10-24
11295686 Liquid crystal control circuit, electronic timepiece, and liquid crystal control method Takahiro Ono, Fumiaki Ochiai, Yoshinori Asami 2022-04-05
11258292 Electronic device, electronic timepiece and battery charging method 2022-02-22
10847104 Dot matrix display device and time display device Tomoo Kasuo, Takanobu Suzuki 2020-11-24
10824117 Electronic device, electronic timepiece, display control method, and storage medium 2020-11-03
10783845 Liquid crystal control circuit, electronic timepiece, and liquid crystal control method Takahiro Ono, Fumiaki Ochiai, Yoshinori Asami 2020-09-22
9523960 Illumination device, display apparatus, and timepiece Kei HANZAWA 2016-12-20
9423774 Electronic timepiece including light emitting section 2016-08-23
8971155 Radio wave timepiece Takashi Sano 2015-03-03
7218299 Liquid crystal display apparatus Naoki Masazumi 2007-05-15
7145538 Liquid crystal display device and method for driving a liquid crystal display Tsukasa Yagi, Naoki Masazumi 2006-12-05
7038648 Method and a device for driving a liquid crystal display, and a liquid crystal display apparatus Naoki Masazumi 2006-05-02
7019737 Liquid crystal display device, portable electronic device and driving method thereof Katsuhiko Asai, Hiroshi Ootsuka, Kiyofumi Hashimoto, Hideo Hotomi 2006-03-28
6954195 Liquid crystal display device having a liquid crystal display driven by interlace scanning and/or sequential scanning Shuji Yoneda, Masaaki Nakai, Kiyofumi Hashimoto, Naoki Masazumi, Katsuhiko Asai +6 more 2005-10-11
6927765 Liquid crystal display device and driving method thereof Naoki Masazumi, Hideo Hotomi 2005-08-09
6888522 Information display apparatus Yoshifumi Shibata, Kiyofumi Hashimoto, Hideo Hotomi, Naoki Masazumi, Koichi Kohriyama 2005-05-03
6697039 Information displaying apparatus Koichi Kohriyama, Hideo Hotomi, Naoki Masazumi 2004-02-24
6633319 Image recording apparatus Hideaki Ueda, Kiyofumi Hashimoto 2003-10-14
6552756 Recording method and recording device using a heat reversible recording medium Shoji Kotani, Naoya Suzuki, Hideaki Ueda 2003-04-22
6489983 Image recording method and image recording apparatus using the same Tatsuhiko Miyoshi 2002-12-03
6414666 Liquid crystal display device and method of driving a liquid crystal display element Hideaki Ueda, Naoki Masazumi 2002-07-02
6243259 Electronic member and electronic device Mitsuo Matsunaga 2001-06-05
6215960 Camera with camera-shake detection apparatus Masataka Hamada, Hiroshi Ootsuka, Hisayuki Masumoto, Takashi Okada 2001-04-10
5420661 Camera with camera-shake detection apparatus Masataka Hamada, Hiroshi Ootsuka, Hisayuki Masumoto, Takashi Okada 1995-05-30