Growing community of inventors

Tokyo, Japan

Mitsuru Ohnuma

Average Co-Inventor Count = 5.18

ph-index = 8

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 260

Mitsuru OhnumaIsamu Takekoshi (8 patents)Mitsuru OhnumaAtsushi Katayama (6 patents)Mitsuru OhnumaKazunori Hashimoto (4 patents)Mitsuru OhnumaTomoyuki Miyata (4 patents)Mitsuru OhnumaShigeru Sato (4 patents)Mitsuru OhnumaTsuneo Maeda (4 patents)Mitsuru OhnumaMasahito Saegusa (4 patents)Mitsuru OhnumaTakashi Yamamoto (3 patents)Mitsuru OhnumaToshihiko Wada (3 patents)Mitsuru OhnumaKazunori Hasimoto (3 patents)Mitsuru OhnumaHiroshi Mitsumaki (2 patents)Mitsuru OhnumaKatsuaki Takahashi (2 patents)Mitsuru OhnumaKazuyuki Tsuburaya (2 patents)Mitsuru OhnumaSeishiro Sato (2 patents)Mitsuru OhnumaHiroyuki Sakai (1 patent)Mitsuru OhnumaYoshiaki Kato (1 patent)Mitsuru OhnumaAtsushi Ninomiya (1 patent)Mitsuru OhnumaTakashi Yamazaki (1 patent)Mitsuru OhnumaTadao Mimura (1 patent)Mitsuru OhnumaHiroyasu Uchida (1 patent)Mitsuru OhnumaRyuji Tao (1 patent)Mitsuru OhnumaIsao Shindo (1 patent)Mitsuru OhnumaSeiji Kamimura (1 patent)Mitsuru OhnumaHiroshi Satake (1 patent)Mitsuru OhnumaKazuki Torai (1 patent)Mitsuru OhnumaKahei Shiraishi (1 patent)Mitsuru OhnumaFumio Toyoda (1 patent)Mitsuru OhnumaAkio Hara (1 patent)Mitsuru OhnumaHiromichi Sato (1 patent)Mitsuru OhnumaMasato Tanitsu (1 patent)Mitsuru OhnumaHayato Saito (1 patent)Mitsuru OhnumaToshio Tachi (1 patent)Mitsuru OhnumaMichiaki Motoshima (1 patent)Mitsuru OhnumaMitsuru Ohnuma (16 patents)Isamu TakekoshiIsamu Takekoshi (27 patents)Atsushi KatayamaAtsushi Katayama (21 patents)Kazunori HashimotoKazunori Hashimoto (39 patents)Tomoyuki MiyataTomoyuki Miyata (36 patents)Shigeru SatoShigeru Sato (15 patents)Tsuneo MaedaTsuneo Maeda (10 patents)Masahito SaegusaMasahito Saegusa (4 patents)Takashi YamamotoTakashi Yamamoto (32 patents)Toshihiko WadaToshihiko Wada (9 patents)Kazunori HasimotoKazunori Hasimoto (3 patents)Hiroshi MitsumakiHiroshi Mitsumaki (50 patents)Katsuaki TakahashiKatsuaki Takahashi (38 patents)Kazuyuki TsuburayaKazuyuki Tsuburaya (9 patents)Seishiro SatoSeishiro Sato (3 patents)Hiroyuki SakaiHiroyuki Sakai (122 patents)Yoshiaki KatoYoshiaki Kato (84 patents)Atsushi NinomiyaAtsushi Ninomiya (74 patents)Takashi YamazakiTakashi Yamazaki (62 patents)Tadao MimuraTadao Mimura (25 patents)Hiroyasu UchidaHiroyasu Uchida (24 patents)Ryuji TaoRyuji Tao (18 patents)Isao ShindoIsao Shindo (14 patents)Seiji KamimuraSeiji Kamimura (11 patents)Hiroshi SatakeHiroshi Satake (9 patents)Kazuki ToraiKazuki Torai (4 patents)Kahei ShiraishiKahei Shiraishi (4 patents)Fumio ToyodaFumio Toyoda (3 patents)Akio HaraAkio Hara (3 patents)Hiromichi SatoHiromichi Sato (2 patents)Masato TanitsuMasato Tanitsu (1 patent)Hayato SaitoHayato Saito (1 patent)Toshio TachiToshio Tachi (1 patent)Michiaki MotoshimaMichiaki Motoshima (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Hitachi, Ltd. (11 from 42,485 patents)

2. Hitachi Medical Corporation (5 from 900 patents)


16 patents:

1. 6236210 - Magnetic resonance imaging system

2. 6218837 - Magnetic resonance imaging system

3. 6215308 - Magnetic resonance imaging system

4. 6049208 - Open type magnetic resonance imaging system which allows for easy access

5. 6027247 - X-ray photographing apparatus

6. D381756 - Immunity analyzer

7. D380551 - Biochemical analayzer

8. D352911 - Processing machine for electron beam lithography system

9. D352910 - Processing machine for electron beam lithography system

10. D349888 - Controller for semi-conductor processing machine

11. D347396 - Mass spectrometer combined with liquid chromatograph

12. D340770 - Operation station machine for a biochemical analysis

13. D339639 - Biochemical analyzer

14. D332314 - Clinical chemistry analyzer

15. D278911 - Computer display

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12/6/2025
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