Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Seiichirou Shirai — 13 Patents

Hitachi: 12 patents #3,473 of 28,497Top 15%
HEHitachi Vlsi Engineering: 11 patents #38 of 666Top 6%
NDNitto Denko: 1 patents #1,580 of 2,479Top 65%
Hamura, JP: #44 of 277 inventorsTop 20%
Overall (All Time): #362,438 of 4,157,543Top 9%
13 Patents All Time
Seiichirou Shirai has been granted 13 US patents while listed as an inventor at Hitachi. The first was granted in 1993 and the most recent in May 2005. Seiichirou Shirai ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list Seiichirou Shirai in Hamura, JP.

Patents per Year

Patents granted per year, 1993 to 2005Bar chart with a peak of 4 patents in 1998.peak 41993: 1 patents19931994: 1 patents19941996: 1 patents19961998: 4 patents19982000: 2 patents20002001: 1 patents20012002: 1 patents20022003: 1 patents20032005: 1 patents2005

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6894334 Semiconductor integrated circuit device, process for fabricating the same, and apparatus for fabricating the same Jun Sugiura, Osamu Tsuchiya, Makoto Ogasawara, Fumio Ootsuka, Kazuyoshi Torii +22 more 2005-05-17 $82,000
6548847 SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE HAVING A FIRST WIRING STRIP EXPOSED THROUGH A CONNECTING HOLE, A TRANSITION-METAL FILM IN THE CONNECTING HOLE AND AN ALUMINUM WIRING STRIP THEREOVER, AND A TRANSITION-METAL NITRIDE FILM BETWEEN THE ALUMINUM WIRING STRIP AND THE TRANSITION-METAL FILM Jun Sugiura, Osamu Tsuchiya, Makoto Ogasawara, Fumio Ootsuka, Kazuyoshi Torii +22 more 2003-04-15 $98,000
6342412 Semiconductor integrated circuit device, process for fabricating the same, and apparatus for fabricating the same Jun Sugiura, Osamu Tsuchiya, Makoto Ogasawara, Fumio Ootsuka, Kazuyoshi Torii +22 more 2002-01-29 $286,000
6169324 Semiconductor integrated circuit device, process for fabricating the same, and apparatus for fabricating the same Jun Sugiura, Osamu Tsuchiya, Makoto Ogasawara, Fumio Ootsuka, Kazuyoshi Torii +22 more 2001-01-02 $569,000
6127255 Semiconductor integrated circuit device, process for fabricating the same, and apparatus for fabricating the same Jun Sugiura, Osamu Tsuchiya, Makoto Ogasawara, Fumio Ootsuka, Kazuyoshi Torii +22 more 2000-10-03 $928,000
6040110 Process and apparatus for the removal of resist Toshihiko Onozuka, Takayuki Noishiki, Satoshi Sakai, Katsuhiro Sasajima, Eiji Toyoda +1 more 2000-03-21
5811316 Method of forming teos oxide and silicon nitride passivation layer on aluminum wiring Jun Sugiura, Osamu Tsuchiya, Makoto Ogasawara, Fumio Ootsuka, Kazuyoshi Torii +22 more 1998-09-22 $131,000
5780882 Semiconductor integrated circuit device, process for fabricating the same, and apparatus for fabricating the same Jun Sugiura, Osamu Tsuchiya, Makoto Ogasawara, Fumio Ootsuka, Kazuyoshi Torii +22 more 1998-07-14 $166,000
5739589 Semiconductor integrated circuit device process for fabricating the same and apparatus for fabricating the same Jun Sugiura, Osamu Tsuchiya, Makoto Ogasawara, Fumio Ootsuka, Kazuyoshi Torii +22 more 1998-04-14 $140,000
5725971 Method of manufacturing phase shift masks and a method of manufacturing semiconductor integrated circuit devices Noboru Moriuchi, Toshihiko Onozuka 1998-03-10 $155,000
5557147 Semiconductor integrated circuit device, process for fabricating the same, and apparatus for fabricating the same Jun Sugiura, Osamu Tsuchiya, Makoto Ogasawara, Fumio Ootsuka, Kazuyoshi Torii +22 more 1996-09-17 $76,000
5331191 Semiconductor integrated circuit device, process for fabricating the same, and apparatus for fabricating the same Jun Sugiura, Osamu Tsuchiya, Makoto Ogasawara, Fumio Ootsuka, Kazuyoshi Torii +22 more 1994-07-19 $89,000
5202275 Semiconductor integrated circuit device, process for fabricating the same, and apparatus for fabricating the same Jun Sugiura, Osamu Tsuchiya, Makoto Ogasawara, Fumio Ootsuka, Kazuyoshi Torii +22 more 1993-04-13 $55,000