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

Tadashi Kuwabara — 55 Patents

Hitachi: 53 patents #249 of 28,497Top 1%
HSHitachi Microsoftware Systems: 4 patents #1 of 44Top 3%
MAMaxell: 2 patents #227 of 437Top 55%
HNHitachi Information Network: 1 patents #13 of 29Top 45%
HCHitachi Koki Co.: 1 patents #557 of 888Top 65%
Tokyo, JP: #1,594 of 90,295 inventorsTop 2%
Overall (All Time): #45,454 of 4,157,543Top 2%
55 Patents All Time
Tadashi Kuwabara has been granted 55 US patents while listed as an inventor at Hitachi. The first was granted in 1984 and the most recent in May 2020. Tadashi Kuwabara ranks #45,454 of 4,157,543 US inventors in our database (top 1.1%). Patent records list Tadashi Kuwabara in Tokyo, JP.

Patents per Year

Patents granted per year, 1984 to 2020Bar chart with a peak of 8 patents in 1995.peak 81984: 1 patents19841987: 1 patents1988: 1 patents1989: 2 patents19891990: 1 patents1991: 1 patents1992: 3 patents19921993: 1 patents1994: 2 patents1995: 8 patents19951996: 6 patents1997: 4 patents1998: 6 patents19981999: 4 patents2000: 1 patents2001: 2 patents20012002: 2 patents2003: 2 patents2005: 2 patents20052008: 2 patents2011: 1 patents2019: 1 patents20192020: 1 patents2020

Issued Patents All Time

Showing 1–25 of 55 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10656424 Information display terminal, information display system, and information display method Susumu Yoshida, Satoshi Ouchi, Yukinobu Tada, Yoshiho Seo 2020-05-19
10386637 Information display terminal, information display system, and information display method Susumu Yoshida, Satoshi Ouchi, Yukinobu Tada, Yoshiho Seo 2019-08-20
7912928 Network device and network device control method Mayuko Tanaka, Yoshimichi Kudo, Shigeto Oeda 2011-03-22 $96,000
7403982 Network device and network device control method Mayuko Tanaka, Yoshimichi Kudo, Shigeto Oeda 2008-07-22 $291,000
7339895 Gateway device and control method for communication with IP and IPV6 protocols Tomochika Ozaki, Isao Nakagawa, Hiromichi Ito 2008-03-04 $221,000
6895393 Electronic book distributing system by use of purchase certificate and devices therefor Toru Numata, Hiroshi Shimizu, Misuzu Mochizuki, Yukinobu Tada, Naoki Yamamoto +6 more 2005-05-17 $82,000
6857131 Method and apparatus for displaying an image and data related to the image conditioned on user identifier Yuichi Yagawa, Michio Morioka, Shigeki Hirasawa, Tomochika Ozaki, Akio Yajima 2005-02-15 $115,000
6643189 Memory device Koichi Kimura, Toshihiko Ogura, Hiroaki Aotsu, Mitsuru Ikegami, Hiromichi Enomoto +1 more 2003-11-04 $240,000
6535921 Method of sending and receiving information and system using such method Shigeki Hirasawa, Michio Morioka, Tomochika Ozaki, Yuichi Yagawa, Akio Yajima 2003-03-18 $141,000
6487543 Media-integrating system, terminal device, recording medium and broadcasting method for use in the media-integrating system Tomochika Ozaki, Michio Morioka, Yuichi Yagawa, Shigeki Hirasawa, Akio Yajima 2002-11-26 $102,000
6359812 Memory device Koichi Kimura, Toshihiko Ogura, Hiroaki Aotsu, Mitsuru Ikegami, Hiromichi Enomoto +1 more 2002-03-19 $321,000
6314467 Method of sending and receiving information and system using such method Shigeki Hirasawa, Michio Morioka, Tomochika Ozaki, Yuichi Yagawa, Akio Yajima 2001-11-06 $303,000
6198665 One chip semiconductor integrated circuit device having two modes of data write operation and bits setting operation Koichi Kimura, Toshihiko Ogura, Hiroaki Aotsu, Mitsuru Ikegami, Hiromichi Enomoto +1 more 2001-03-06 $311,000
6028795 One chip semiconductor integrated circuit device having two modes of data write operation and bits setting operation Koichi Kimura, Toshihiko Ogura, Hiroaki Aotsu, Mitsuru Ikegami, Hiromichi Enomoto +1 more 2000-02-22 $620,000
5991798 Package medium system having URL hyper-linked to data in removable storage Tomochika Ozaki, Toshiyuki Oda, Mika Nishiyama, Takashi Takeuchi, Jun Miyauchi 1999-11-23 $945,000
5933478 Data transfer system and handheld terminal device used therefor Tomochika Ozaki, Yoshihiko Kunimori, Kouichi Hibi, Michihiro Mese, Hiroshi Shimizu +2 more 1999-08-03 $625,000
5923591 Memory circuit Koichi Kimura, Toshihiko Ogura, Hiroaki Aotsu, Mitsuru Ikegami, Hiromichi Enomoto +1 more 1999-07-13 $1,065,000
5867281 Electronic mail system and method Takahiko Nozoe, Hideki Kuwamoto, Chiyo Akamatsu 1999-02-02 $397,000
5838337 Graphic system including a plurality of one chip semiconductor integrated circuit devices for displaying pixel data on a graphic display Koichi Kimura, Toshihiko Ogura, Hiroaki Aotsu, Mitsuru Ikegami, Hiromichi Enomoto +1 more 1998-11-17 $224,000
5781479 Memory device Koichi Kimura, Toshihiko Ogura, Hiroaki Aotsu, Mitsuru Ikegami, Hiromichi Enomoto +1 more 1998-07-14 $166,000
5767864 One chip semiconductor integrated circuit device for displaying pixel data on a graphic display Koichi Kimura, Toshihiko Ogura, Hiroaki Aotsu, Mitsuru Ikegami, Hiromichi Enomoto +1 more 1998-06-16 $146,000
5754629 Information processing system which can handle voice or image data Yoshihiko Kunimori, Toshio Kamimura, Tomochika Ozaki, Takao Iwatani, Michihiro Mese +1 more 1998-05-19 $115,000
5740369 Information delivery system and portable information terminal Tooru Yokozawa, Hiroshi Shimizu, Wataru Kitayama, Hidefumi Goto, Tomohiro Esaki +1 more 1998-04-14 $140,000
5719809 Memory device Koichi Kimura, Toshihiko Ogura, Hiroaki Aotsu, Mitsuru Ikegami, Hiromichi Enomoto +1 more 1998-02-17 $122,000
5637932 Power consumption control system Hiroyuki Koreeda, Naomichi Nonaka, Keiichi Nakane, Shigeki Taniguchi 1997-06-10 $120,000