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USPTO Patent Rankings Data through Dec 31, 2025
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Ryosuke Uematsu — 30 Patents

Nec: 27 patents #306 of 14,502Top 3%
FIFujifilm Business Innovation: 2 patents #3,180 of 5,238Top 65%
Panasonic: 1 patents #13,316 of 21,108Top 65%
Tokyo, JP: #4,446 of 90,295 inventorsTop 5%
Overall (All Time): #121,623 of 4,157,543Top 3%
30 Patents All Time
Ryosuke Uematsu has been granted 30 US patents while listed as an inventor at Nec. The first was granted in 1987 and the most recent in July 2013. Ryosuke Uematsu ranks #121,623 of 4,157,543 US inventors in our database (top 2.9%). Patent records list Ryosuke Uematsu in Tokyo, JP.

Patents per Year

Patents granted per year, 1987 to 2013Bar chart with a peak of 8 patents in 1999.peak 81987: 1 patents19871990: 1 patents1991: 1 patents19911992: 2 patents1998: 2 patents19981999: 8 patents2000: 5 patents20002001: 4 patents2002: 3 patents20022003: 1 patents2011: 1 patents20112013: 1 patents2013

Issued Patents All Time

Showing 1–25 of 30 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8488892 Image encoder and camera system Masahiro Hojo, Masahiro Ogawa 2013-07-16
7991331 Developing unit, visualized image formation unit and image forming apparatus 2011-08-02
6655789 Ink jet print head Junichi Suetsugu, Kazuo Shima, Minoru Yamada, Yoshihiro Hagihara, Junichi Fujisawa 2003-12-02 $20,000
6390607 Ink jet print head Junichi Suetsugu, Kazuo Shima, Minoru Yamada, Yoshihiro Hagihara, Junichi Fujisawa 2002-05-21 $15,000
6362859 Electrostatic ink jet recording head having electrophoretic electrode and gravity ink reservoir Yoshihiro Hagiwara, Junichi Suetsugu, Hitoshi Minemoto, Kazuo Shima 2002-03-26 $32,000
6353721 Color image formation apparatus using a liquid developer and color image formation method using a liquid developer Chiseki Yamaguchi, Kazunori Shindo 2002-03-05
6290338 Ink jet print head Junichi Suetsugu, Kazuo Shima, Minoru Yamada, Yoshihiro Hagihara, Junichi Fujisawa 2001-09-18 $29,000
6220695 Ink-jet recording device for suppressing excess electrophoretic accumulation of charged particles Hitoshi Minemoto, Yoshihiro Hagiwara, Junichi Suetsugu, Kazuo Shima 2001-04-24 $30,000
6220696 Simple electrostatic ink jet printing head having low cost Junichi Suetsugu, Kazuo Shima, Yoshihiro Hagiwara, Hitoshi Minemoto, Toru Yakushiji +2 more 2001-04-24 $30,000
6213591 Injet recording apparatus Junichi Suetsugu, Kazuo Shima, Tadashi Mizoguchi, Hitoshi Minemoto, Hitoshi Takemoto +2 more 2001-04-10 $32,000
6119342 Method of producing a record head for an electrostatic ink jet recorder Kazuo Shima, Junichi Suetsugu, Tadashi Mizoguchi, Hitoshi Minemoto, Hitoshi Takemoto +2 more 2000-09-19 $79,000
6113219 Electrostatic ink jet recording apparatus capable of realizing stable ejection of ink Tadashi Mizoguchi, Hitoshi Takemoto, Junichi Suetsugu, Hitoshi Minemoto, Kazuo Shima +2 more 2000-09-05 $75,000
6089699 Method and apparatus for controlling inkjet ejection electrodes by varying the electrodes potentials Hitoshi Minemoto, Yoshihiro Hagiwara, Junichi Suetsugu, Tadashi Mizoguchi, Hitoshi Takemoto +2 more 2000-07-18 $87,000
6074044 Electrostatic ink jet recording head using control and recording electrodes for ejecting toner particles Junichi Suetsugu, Kazuo Shima, Yoshihiro Hagiwara, Hitoshi Minemoto, Toru Yakushiji +2 more 2000-06-13 $79,000
6059399 Ink-jet recording apparatus with improved ink density formation Junichi Suetsugu, Kazuo Shima, Yoshihiro Hagiwara, Hitoshi Minemoto, Hitoshi Takemoto +2 more 2000-05-09 $102,000
5988795 Electrostatic ink jet recording apparatus preventing precipitation of charged particulate material in ink liquid Junichi Suetsugu, Yoshihiro Hagiwara, Hitoshi Minemoto, Kazuo Shima 1999-11-23 $23,000
5975684 Ink jet recording head having an ink stream path Junichi Suetsugu, Kazuo Shima, Hitoshi Minemoto, Yoshihiro Hagiwara 1999-11-02 $24,000
5963231 Electrostatic ink jet recording head with grouped electrodes Kazuo Shima, Junichi Suetsugu, Hitoshi Minemoto, Yoshihiro Hagiwara 1999-10-05 $26,000
5926194 Electrostatic ink jet recording device Yoshihiro Hagiwara, Hitoshi Minemoto, Junichi Suetsugu, Kazuo Shima 1999-07-20 $23,000
5905510 Toner content monitoring system for use in a recording head for ink-jet printer Yoshihiro Hagiwara, Hitoshi Minemoto, Junichi Suetsugu, Kazuo Shima 1999-05-18 $24,000
5880761 Ink jet print head Junichi Suetsugu, Kazuo Shima, Minoru Yamada, Yoshihiro Hagihara, Junichi Fujisawa 1999-03-09 $19,000
5877790 Electrostatic ink jet recording apparatus ejecting ink using different electric potentials applied to different electrodes Yoshihiro Hagiwara, Junichi Suetsugu, Hitoshi Minemoto, Kazuo Shima 1999-03-02 $17,000
5874972 Electrostatic ink jet record head having a control electrode for equalizing the electric field of an ink chamber an ink jet recorder using same Junichi Suetsugu, Hitoshi Minemoto, Yoshihiro Hagiwara, Kazuo Shima 1999-02-23 $17,000
5801730 Ink jet print head having a projecting ejection electrode Kazuo Shima, Junichi Suetsugu, Hitoshi Minemoto, Yoshihiro Hagiwara 1998-09-01 $6,000
5754200 Ink jet type head assembly Hitoshi Minemoto, Yoshihiro Hagiwara, Junichi Suetsugu, Kazuo Shima 1998-05-19 $15,000