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

Kiyoshi Sakai — 112 Patents

Canon: 41 patents #1,047 of 19,416Top 6%
Ricoh Company: 35 patents #475 of 9,818Top 5%
Fujitsu Limited: 23 patents #1,155 of 24,456Top 5%
CCCopyer Co.: 2 patents #19 of 51Top 40%
JNJnc: 2 patents #140 of 413Top 35%
SCSanyo Electric Co.: 2 patents #2,557 of 6,347Top 45%
MLMitsubishi Petrochemical Company Limited: 1 patents #291 of 670Top 45%
NCNippon Polyurethane Industry Co.: 1 patents #33 of 76Top 45%
OMOmron: 1 patents #1,808 of 3,089Top 60%
KUKyushu University, National University: 1 patents #221 of 767Top 30%
SCSankyo Holdings Co.: 1 patents #423 of 700Top 65%
HCHodogaya Chemical Co.: 1 patents #201 of 359Top 60%
Sumitomo Electric Industries: 1 patents #13,249 of 21,551Top 65%
TOTosoh: 1 patents #576 of 1,042Top 60%
LILintec: 1 patents #282 of 514Top 55%
Miyazaki, JP: #2 of 531 inventorsTop 1%
Overall (All Time): #11,519 of 4,157,543Top 1%
112 Patents All Time
Kiyoshi Sakai has been granted 112 US patents while listed as an inventor at Canon. The first was granted in 1980 and the most recent in April 2022. Kiyoshi Sakai ranks #11,519 of 4,157,543 US inventors in our database (top 0.28%). Patent records list Kiyoshi Sakai in Miyazaki, JP.

Patents per Year

Patents granted per year, 1983 to 2022Bar chart with a peak of 10 patents in 1983.peak 101983: 10 patents19831984: 8 patents1985: 4 patents1987: 1 patents19871988: 1 patents1989: 1 patents1990: 2 patents19901991: 2 patents1992: 4 patents1993: 8 patents19931994: 7 patents1995: 3 patents1996: 3 patents19961997: 7 patents1998: 6 patents2001: 4 patents20012002: 1 patents2003: 1 patents2004: 4 patents20042005: 1 patents2006: 1 patents2007: 1 patents20072008: 1 patents2012: 1 patents2013: 1 patents20132015: 3 patents2016: 1 patents2017: 3 patents20172018: 2 patents2022: 1 patents2022

Issued Patents All Time

Showing 1–25 of 112 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11307332 Diffusion sheet, laminated prism sheet, and laminated optical sheet Yukio Shimamura 2022-04-19
10148966 Video encoding method and apparatus, and video decoding apparatus Akihiro Yamori 2018-12-04
9906800 Video encoding method and apparatus, and video decoding apparatus Akihiro Yamori 2018-02-27
9838699 Video encoding method and apparatus, and video decoding apparatus Akihiro Yamori 2017-12-05
9838698 Video encoding method and apparatus, and video decoding apparatus Akihiro Yamori 2017-12-05
9756345 Video encoding method and apparatus, and video decoding apparatus Akihiro Yamori 2017-09-05
PP26574 Jacaranda tree named ‘Sakai01’ 2016-04-05
9167254 Video encoding method and apparatus, and video decoding apparatus Akihiro Yamori 2015-10-20
9115243 Organosilicon compound, thermosetting resin composition containing the organosilicon compound, hardening resin and encapsulation material for optical semiconductor Kiichi Kawabata, Akio Tajima, Takashi Matsuo, Koichi Ayama 2015-08-25
8946357 Organosilicon compound, thermosetting resin composition containing the organosilicon compound, hardening resin and encapsulation material for optical semiconductor Kiichi Kawabata, Akio Tajima, Takashi Matsuo, Koichi Ayama 2015-02-03
8513417 Method for synthesis of nitroxyl radical Hideo Utsumi, Kenichi Yamada 2013-08-20
8144776 Direct mode video coding using variable selection criterion Akihiro Yamori, Akira Nakagawa 2012-03-27
7453941 Moving pictures encoding method and apparatus for detecting a scene change between fields of an interlaced image Akihiro Yamori, Takashi Hamano, Kouji Yamada 2008-11-18
7280787 Image forming apparatus Yasuyuki Shinkai, Satoru Tomita, Mamoru Kiyota, Kohji Ichimiya, Yuichiro Kanoshima +1 more 2007-10-09
7092669 System for facilitating teaching and learning Yukiko Inada 2006-08-15
6900295 Polymeric compound comprising glycopolymer and a method for decomposing the same Hiroyoshi Kishi, Toyoko Kobayashi, Norio Kaneko, Kazumi Tanaka, Chieko Mihara +2 more 2005-05-31 $344,000
6816617 Motion vector searcher and motion vector search method as well as moving picture coding apparatus Akihiro Yamori 2004-11-09
6801572 Method and apparatus for image signal encoding Kohji Yamada 2004-10-05
6725003 Image forming apparatus having a supporting device for supporting imaging units Yasuyuki Shinkai, Satoru Tomita, Mamoru Kiyota, Kohji Ichimiya, Yuichiro Kanoshima +1 more 2004-04-20
6699195 Electronic blood pressure monitor and blood pressure data processing system Fumio Nakazawa, Koichi Takizawa 2004-03-02
6529788 Recycling system and recycling method Tatsuo Tani, Yasushi Akiba, Shohzoh Miyawaki, Teruzo Hasumi, Mitsuaki Urakawa +3 more 2003-03-04
6345120 Image processing system, image data transmission and reception apparatus, and image processing method Tsutomu Togo 2002-02-05
6316606 Polymeric compound comprising glycopolymer and a method for decomposing the same Hiroyoshi Kishi, Toyoko Kobayashi, Norio Kaneko, Kazumi Tanaka, Chieko Mihara +2 more 2001-11-13 $190,000
6307969 Dynamic image encoding method and apparatus Hiroaki Yamashita, Takahiro Kobayakawa 2001-10-23
6263112 Motion vector searching apparatus and motion picture coding apparatus Hideaki Watanabe 2001-07-17