Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Osamu Koyama — 80 Patents

Canon: 69 patents #337 of 19,416Top 2%
KCKankyou Engineering Co.: 6 patents #7 of 19Top 40%
JAJapan Bioindustry Association: 4 patents #2 of 10Top 20%
SESeiko Epson: 3 patents #3,864 of 7,774Top 50%
Sony: 2 patents #12,963 of 25,231Top 55%
AWAir Water: 1 patents #29 of 73Top 40%
Sumitomo Electric Industries: 1 patents #13,249 of 21,551Top 65%
ATAgency Of Industrial Science And Technology: 1 patents #568 of 1,778Top 35%
Overall (All Time): #22,514 of 4,157,543Top 1%
80 Patents All Time

Issued Patents All Time

Showing 26–50 of 80 patents

Patent #TitleCo-InventorsDate
6653057 Stamper for forming optical disk substrate and method of manufacturing the same 2003-11-25
6607280 Projection apparatus Yoshiaki Kurioka 2003-08-19
6563562 Liquid crystal panel with holding substrate having fixing protuberances Takayuki Ishii, Katsumi Kurematsu 2003-05-13
6559821 Matrix substrate and liquid crystal display as well as projector using the same Takeshi Ichikawa, Katsumi Kurematsu 2003-05-06
6512566 Matrix substrate, liquid crystal display device using it, and method for producing the matrix substrate Koichi Yamagishi, Katsumi Kurematsu, Toru Nakazawa 2003-01-28
6495326 Method for determining a concentration of target nucleic acid molecules, nucleic acid probes for the method, and method for analyzing data obtained by the method Ryuichiro Kurane, Takahiro Kanagawa, Yoichi Kamagata, Shinya Kurata, Kazutaka Yamada +2 more 2002-12-17
6492121 Method for determining a concentration of target nucleic acid molecules, nucleic acid probes for the method, and method for analyzing data obtained by the method Ryuichiro Kurane, Takahiro Kanagawa, Yoichi Kamagata, Shinya Kurata, Kazutaka Yamada +2 more 2002-12-10
6480761 Battery-driven legged robot and method of controlling the same Kenichiro Ueno 2002-11-12
6476897 Matrix substrate and liquid crystal display device and projection liquid crystal display device using the same Takanori Watanabe, Katsumi Kurematsu 2002-11-05
6418109 Optical recording/reproducing apparatus including a mask device for masking marginal rays, in a direction perpendicular to a recording medium track, of a light beam returned from the recording medium Takeshi Yamawaki 2002-07-09
6411349 Semiconductor device, display apparatus using such devices and method of manufacturing such an apparatus as well as that of manufacturing such an apparatus Toru Nakazawa, Katsumi Kurematsu 2002-06-25
6356332 MATRIX SUBSTRATE AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME IN WHICH THE DISTANCE BETWEEN THE UPPER SURFACE OF THE PIXELS BEING LESS THAN THE DISTANCE BETWEEN THE LOWER SURFACE OF THE PIXELS IN CONTACT WITH THE SUBSTRATE Takeshi Ichikawa, Katsumi Kurematsu 2002-03-12
6339459 Liquid crystal display device Takeshi Ichikawa, Katsumi Kurematsu 2002-01-15
6295107 Liquid crystal display with shielding layer for passing parallel rays of light into micro-lens array Takanori Watanabe, Katsumi Kurematsu 2001-09-25
6281867 Display panel and projection type display apparatus Katsumi Kurematsu 2001-08-28
6282165 Optical recording/reproducing apparatus including a mask device for masking marginal rays, in a direction perpendicular to a recording medium track, of a light beam returned from the recording medium Takeshi Yamawaki 2001-08-28
6274516 Process for manufacturing interlayer insulating film and display apparatus using this film and its manufacturing method Seiji Kamei, Katsumi Kurematsu 2001-08-14
6266038 Liquid crystal display apparatus Daisuke Yoshida, Katsumi Kurematsu 2001-07-24
6260974 Image projecting apparatus 2001-07-17
6188529 Projecting apparatus for a high-resolution color liquid crystal projector Junko Kuramochi, Saburo Sugawara 2001-02-13
6176585 Projection apparatus Junko Kuramochi, Saburo Sugawara 2001-01-23
6172723 Reflection type LCD pixel having outer low reflectivity region surrounding high reflectivity region upon which microlens light is focussed Shunsuke Inoue, Katsumi Kurematsu 2001-01-09
6166792 Reflective LCD having reflectivity characteristics between electrodes and reflector Mamoru Miyawaki, Takeshi Ichikawa, Hiroo Akabori, Katsumi Kurematsu 2000-12-26
6163352 Active matrix substrated, liquid crystal apparatus using the same the display apparatus using such liquid crystal apparatus Takeshi Ichikawa, Mamoru Miyawaki, Katsumi Kurematsu 2000-12-19
6157429 Matrix substrate having continuous even surface in drive circuit or sealing region as well as display region and manufacturing method thereof Mamoru Miyawaki, Katsumi Kurematsu, Yoshihiko Fukumoto, Toru Nakazawa 2000-12-05