Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
KM

Keiichi Maeda — 25 Patents

Sony: 15 patents #2,874 of 25,231Top 15%
KOKomatsu: 4 patents #479 of 2,087Top 25%
MIMitsubishi Cable Industries: 2 patents #97 of 372Top 30%
VJVictor Company Of Japan: 2 patents #523 of 1,489Top 40%
Kabushiki Kaisha Toshiba: 2 patents #10,039 of 21,451Top 50%
UKUshio Denki Kabushiki Kaisha: 1 patents #309 of 583Top 55%
Tokyo, JP: #5,699 of 90,295 inventorsTop 7%
Overall (All Time): #158,593 of 4,157,543Top 4%
25 Patents All Time
Keiichi Maeda has been granted 25 US patents while listed as an inventor at Sony. The first was granted in 1994 and the most recent in April 2024. Keiichi Maeda ranks #158,593 of 4,157,543 US inventors in our database (top 3.8%). Patent records list Keiichi Maeda in Tokyo, JP.

Patents per Year

Patents granted per year, 1994 to 2024Bar chart with a peak of 4 patents in 1995.peak 41994: 1 patents19941995: 4 patents1996: 2 patents19961998: 2 patents1999: 1 patents19992000: 2 patents2001: 2 patents20012002: 1 patents2005: 1 patents20052006: 2 patents2007: 1 patents20072010: 1 patents2015: 1 patents20152020: 1 patents2021: 2 patents20212024: 1 patents2024

Issued Patents All Time

Showing 1–25 of 25 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11971633 Electrode structure, liquid crystal display device, projective display device, and method of manufacturing electrode structure Takashi Sakairi, Tomoaki Honda, Tsuyoshi Okazaki, Chiho Araki, Katsunori Dai +16 more 2024-04-30 $600,000
11170987 Short-arc discharge lamp Akihiro KUNO 2021-11-09
10908444 Display device, method for producing display device, and display apparatus of projection type Takashi Sakairi, Koichi Amari, Chiho Araki, Hitori Tanigawa, Katsumi Kouno +2 more 2021-02-02 $1,312,000
10866467 Liquid crystal display unit and projection display unit Takashi Sakairi, Koichi Amari 2020-12-15 $1,164,000
9136304 Solid-state imaging device, semiconductor device, manufacturing methods thereof, and electronic apparatus 2015-09-15 $552,000
7851236 Film thickness prediction method, layout design method, mask pattern design method of exposure mask, and fabrication method of semiconductor integrated circuit Kyoko Izuha, Naoki Komai 2010-12-14 $345,000
7261951 Copper based sintered contact material and double-layered sintered contact member Takemori Takayama, Tetsuo Ohnishi, Yoshikiyo Tanaka, Kan'ichi Sato 2007-08-28
7087318 Copper based sintered contact material and double-layered sintered contact member Takemori Takayama, Tetsuo Ohnishi, Yoshikiyo Tanaka, Kan'ichi Sato 2006-08-08
7056598 Copper based sintered contact material and double-layered sintered contact member Takemori Takayama, Tetsuo Ohnishi, Yoshikiyo Tanaka, Kan'ichi Sato 2006-06-06
6844085 Copper based sintered contact material and double-layered sintered contact member Takemori Takayama, Tetsuo Ohnishi, Yoshikiyo Tanaka, Kan'ichi Sato 2005-01-18
6361662 Method for fabricating a semiconductor device in a magnetron sputtering system Yasuhiro Chiba, Mitsuru Taguchi 2002-03-26 $678,000
6268290 Method of forming wirings Mitsuru Taguchi 2001-07-31 $1,128,000
6241869 Apparatus and method for electroplating 2001-06-05 $982,000
6051490 Method of forming wirings Mitsuru Taguchi 2000-04-18 $2,754,000
6043145 Method for making multilayer wiring structure Toshiharu Suzuki, Kazuhide Koyama, Tatsuji Oda 2000-03-28 $1,649,000
5991261 Write inhibit tab for disc cartridge Akira Kato 1999-11-23 $278,000
5776830 Process for fabricating connection structures Hirofumi Sumi, Yukiyasu Sugano, Kazuhide Koyama, Mitsuru Taguchi, Kazuhiro Hoshino 1998-07-07 $480,000
5719446 Multilayer interconnect structure for semiconductor device and method of manufacturing same Mitsuru Taguchi, Hiroshi Suzawa, Hidenori Kenmotsu, Teruo Hirayama 1998-02-17 $466,000
5581125 Interconnect for semiconductor devices and method for fabricating same 1996-12-03 $218,000
5523702 Sequentially switching output buffers 1996-06-04
5449641 Method for fabricating an interconnect for semiconductor devices using (111) crystal plane orientation 1995-09-12 $145,000
5402955 Reel-locking mechanism for compact tape cassette Hitoshi Takahashi, Hiroshi Sonobe 1995-04-04 $58,000
5404056 Semiconductor integrated circuit device with independently operable output buffers 1995-04-04
5396981 Flexible screw and transport apparatus comprising same Masaaki Ohtsuji, Naoki Ohmori, Kenjiro Ishihara, Shigeo Mori, Isao Yokoyama +1 more 1995-03-14
5295573 Flexible screw and transport apparatus comprising same Masaaki Ohtsuji, Naoki Ohmori, Kenjiro Ishihara, Shigeo Mori, Isao Yokoyama +1 more 1994-03-22