Growing community of inventors

Kawasaki, Japan

Hidefumi Ohta

Average Co-Inventor Count = 2.73

ph-index = 3

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 = 16

Hidefumi OhtaKiyosada Machida (5 patents)Hidefumi OhtaHiroshi Wakabayashi (2 patents)Hidefumi OhtaJunichi Omi (2 patents)Hidefumi OhtaHitoshi Aoki (1 patent)Hidefumi OhtaYoshihiro Takeuchii (1 patent)Hidefumi OhtaHidefumi Ohta (5 patents)Kiyosada MachidaKiyosada Machida (38 patents)Hiroshi WakabayashiHiroshi Wakabayashi (124 patents)Junichi OmiJunichi Omi (40 patents)Hitoshi AokiHitoshi Aoki (47 patents)Yoshihiro TakeuchiiYoshihiro Takeuchii (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nikon Corporation (5 from 8,898 patents)


5 patents:

1. 6164842 - Camera having a lens barrier unit opening/closing mechanism

2. 5890027 - Miniaturized camera employing motor members

3. 5729775 - Camera having film counter

4. 5669024 - Camera having a red-eye reduction lamp arranged with respect to a strobe

5. 5617172 - Camera battery cover structure

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as of
12/28/2025
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