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

Mitsuru Ohnuma — 17 Patents

Hitachi: 11 patents #3,815 of 28,497Top 15%
HMHitachi Medical: 5 patents #140 of 680Top 25%
Tokyo, JP: #9,037 of 90,295 inventorsTop 15%
Overall (All Time): #263,971 of 4,157,543Top 7%
17 Patents All Time
Mitsuru Ohnuma has been granted 17 US patents while listed as an inventor at Hitachi. The first was granted in 1983 and the most recent in May 2001. Mitsuru Ohnuma ranks #263,971 of 4,157,543 US inventors in our database (top 6.3%). Patent records list Mitsuru Ohnuma in Tokyo, JP.

Patents per Year

Patents granted per year, 1983 to 2001Bar chart with a peak of 4 patents in 1994.peak 41983: 1 patents19831985: 2 patents19851993: 3 patents19931994: 4 patents19941997: 2 patents19972000: 2 patents20002001: 3 patents2001

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6236210 Magnetic resonance imaging system Isamu Takekoshi, Masahito Saegusa, Atsushi Ninomiya, Atsushi Katayama, Shigeru Sato +1 more 2001-05-22 $550,000
6218837 Magnetic resonance imaging system Isamu Takekoshi, Masahito Saegusa, Atsushi Ninomiya, Atsushi Katayama, Shigeru Sato +1 more 2001-04-17 $350,000
6215308 Magnetic resonance imaging system Isamu Takekoshi, Masahito Saegusa, Atsushi Ninomiya, Atsushi Katayama, Shigeru Sato +1 more 2001-04-10 $432,000
6049208 Open type magnetic resonance imaging system which allows for easy access to the patient being examined Isamu Takekoshi, Masahito Saegusa, Atsushi Ninomiya, Atsushi Katayama, Shigeru Sato +1 more 2000-04-11 $636,000
6027247 X-ray photographing apparatus Toshio Tachi, Akio Hara, Seiji Kamimura, Isamu Takekoshi, Michiaki Motoshima +1 more 2000-02-22 $620,000
D381756 Immunity analyzer Atsushi Ninomiya, Atsushi Katayama, Isamu Takekoshi, Ryuji Tao, Hiroyasu Uchida 1997-07-29
D380551 Biochemical analayzer Atsushi Katayama, Isamu Takekoshi, Isao Shindo, Kahei Shiraishi, Hiromichi Sato 1997-07-01
D352910 Processing machine for electron beam lithography system Takashi Yamamoto, Tomoyuki Miyata, Kazunori Hasimoto, Toshihiko Wada, Takashi Yamazaki +1 more 1994-11-29
D352911 Processing machine for electron beam lithography system Takashi Yamamoto, Tomoyuki Miyata, Kazunori Hasimoto, Toshihiko Wada, Seishiro Sato 1994-11-29
D349888 Controller for semi-conductor processing machine Takashi Yamamoto, Tomoyuki Miyata, Kazunori Hasimoto, Toshihiko Wada, Seishiro Sato 1994-08-23
D347396 Mass spectrometer combined with liquid chromatograph Tomoyuki Miyata, Kazunori Hashimoto, Yoshiaki Kato, Tadao Mimura 1994-05-31
D340770 Operation station machine for a biochemical analysis Kazunori Hashimoto, Hiroshi Mitsumaki, Katsuaki Takahashi 1993-10-26
D339639 Biochemical analyzer Kazunori Hashimoto, Hiroshi Mitsumaki, Katsuaki Takahashi 1993-09-21
D332314 Clinical chemistry analyzer Kazuki Torai, Kazunori Hashimoto, Isamu Takekoshi, Hiroshi Satake 1993-01-05
D279984 Central processor unit Kazuyuki Tsuburaya, Masato Tanitsu, Akihito Nakata, Hidetomo Yoshimura 1985-08-06
D278911 Computer display Kazuyuki Tsuburaya, Masato Tanitsu 1985-05-21
D270154 Video disk player Fumio Toyoda, Kazuyuki Tsuburaya 1983-08-16