Growing community of inventors

Kitaibaraki, Japan

Hirosi Tobita

Average Co-Inventor Count = 9.26

ph-index = 2

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 = 50

Hirosi TobitaFumito Nakajima (2 patents)Hirosi TobitaMasato Takeuchi (2 patents)Hirosi TobitaKohki Tamura (2 patents)Hirosi TobitaHideo Okada (2 patents)Hirosi TobitaSigeru Okabe (2 patents)Hirosi TobitaShinpei Matsuda (1 patent)Hirosi TobitaToshiki Kahara (1 patent)Hirosi TobitaJinichi Imahashi (1 patent)Hirosi TobitaShimpei Matsuda (1 patent)Hirosi TobitaSeizi Takeuchi (1 patent)Hirosi TobitaKenzo Ishii (1 patent)Hirosi TobitaMunehiko Tonami (1 patent)Hirosi TobitaHirosi Tobita (2 patents)Fumito NakajimaFumito Nakajima (38 patents)Masato TakeuchiMasato Takeuchi (21 patents)Kohki TamuraKohki Tamura (19 patents)Hideo OkadaHideo Okada (12 patents)Sigeru OkabeSigeru Okabe (8 patents)Shinpei MatsudaShinpei Matsuda (28 patents)Toshiki KaharaToshiki Kahara (19 patents)Jinichi ImahashiJinichi Imahashi (19 patents)Shimpei MatsudaShimpei Matsuda (15 patents)Seizi TakeuchiSeizi Takeuchi (15 patents)Kenzo IshiiKenzo Ishii (5 patents)Munehiko TonamiMunehiko Tonami (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi, Ltd. (2 from 42,485 patents)


2 patents:

1. 4436794 - Molten carbonate fuel cell

2. 4407905 - Fuel cell

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as of
12/5/2025
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