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

Hitoshi Tamada — 28 Patents

Sony: 28 patents #1,301 of 25,231Top 6%
Kawasaki, JP: #825 of 15,035 inventorsTop 6%
Overall (All Time): #134,628 of 4,157,543Top 4%
28 Patents All Time
Hitoshi Tamada has been granted 28 US patents while listed as an inventor at Sony. The first was granted in 1986 and the most recent in December 2008. Hitoshi Tamada ranks #134,628 of 4,157,543 US inventors in our database (top 3.2%). Patent records list Hitoshi Tamada in Kawasaki, JP.

Patents per Year

Patents granted per year, 1986 to 2008Bar chart with a peak of 6 patents in 2006.peak 61986: 1 patents19861987: 1 patents1988: 2 patents19881990: 1 patents1991: 1 patents19911992: 2 patents1994: 1 patents19941995: 2 patents1998: 2 patents19982001: 1 patents2002: 3 patents20022003: 1 patents2004: 1 patents20042005: 1 patents2006: 6 patents20062008: 2 patents2008

Issued Patents All Time

Showing 1–25 of 28 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7466470 Aggregate of electronic device chips, electronic device chip, aggregate of diffraction grating light modulators, and diffraction grating light modulator Ayumu Taguchi, Masato Nishida, Yasuyuki Ito 2008-12-16 $701,000
7369289 Optical modulation device and image display apparatus using the same Ayumu Taguchi 2008-05-06 $1,049,000
7072097 Image production apparatus, image display apparatus, image display method and optical modulation device adjustment apparatus Koichi Maeyama, Yoshiyuki Akiyama, Hiroki Kikuchi 2006-07-04
7042627 Image production apparatus, image display apparatus, image display method and optical modulation device adjustment apparatus Koichi Maeyama, Yoshiyuki Akiyama, Hiroki Kikuchi 2006-05-09 $816,000
6999229 Image production apparatus, image display apparatus, image display method and optical modulation device adjustment apparatus Koichi Maeyama, Yoshiyuki Akiyama, Hiroki Kikuchi 2006-02-14 $745,000
6992812 Image production apparatus, image display apparatus, image display method and optical modulation device adjustment apparatus Koichi Maeyama, Yoshiyuki Akiyama, Hiroki Kikuchi 2006-01-31 $626,000
6987616 Light reflection/diffraction device, light reflection/diffraction device array, and image display Ayumu Taguchi 2006-01-17 $820,000
6987606 Image production apparatus, image display apparatus, image display method and optical modulation device adjustment apparatus Koichi Maeyama, Yoshiyuki Akiyama, Hiroki Kikuchi 2006-01-17 $820,000
6934240 Optical element, optical head and signal reproducing method Kenjiro Watanabe 2005-08-23 $418,000
6813061 Electrostatic machine element, light diffraction modulation element and image display device Ayumu Taguchi 2004-11-02 $856,000
6559937 Inspection apparatus and method Yutaka Imai, Ayumu Taguchi, Hiroyuki Wada 2003-05-06 $326,000
6465810 Semiconductor light emitting device and its manufacturing method Tohru Doumuki 2002-10-15 $555,000
6451492 Inspection apparatus and method Yutaka Imai, Ayumu Taguchi, Hiroyuki Wada 2002-09-17 $576,000
6411420 Electro-optical element, and method of driving and method of manufacturing the same Masahiro Yamada, Toru Domuki 2002-06-25 $624,000
6282006 Optical communications apparatus and method Shuichi Matsumoto, Takashi Yamaguchi 2001-08-28 $664,000
5748368 Polarization optical element Shuichi Matsumoto, Noriaki Nishi, Kimihiro Saito 1998-05-05 $329,000
5732060 Optical pickup and optical recording medium reproducing apparatus having a wire grid unit Kiyoshi Toyota, Kimihiro Saito, Noriaki Nishi, Shuichi Matsumoto 1998-03-24 $565,000
5459807 Optical waveguide device and second harmonic generator using the same Tohru Doumuki, Masaki Saitoh 1995-10-17 $121,000
5426310 Method of heat-treating an oxide optical crystal and a heat treatment apparatus for carrying out the same Masaki Saitoh, Chiharu Isobe 1995-06-20 $241,000
5341450 LiNbO3 thin film optical waveguide device and process for producing the same Atsuo Yamada, Masaki Saitoh 1994-08-23 $273,000
5168388 Optical waveguide device and optical second harmonic generator using the same Masaki Saitoh, Chiharu Isobe 1992-12-01 $141,000
5150447 Optical waveguide which is formed by liquid phase epitaxial growth Atsuo Yamada, Yukie Taneyama, Masaki Saitoh 1992-09-22 $179,000
5022729 Optical waveguide and second harmonic generator Masaki Saitoh 1991-06-11 $227,000
4898440 Optical waveguide device Masahiko Kaneko, Tsutomu Okamoto 1990-02-06 $727,000
4746884 YIG thin film microwave apparatus Yoshikazu Murakami, Hideo Tanaka, Masami Miyake, Seigo Ito, Toshiro Yamada 1988-05-24 $258,000