Growing community of inventors

Yokohama, Japan

Tetsuya Obara

Average Co-Inventor Count = 4.20

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 = 12

Tetsuya ObaraHiroshi Kimura (1 patent)Tetsuya ObaraAkihiko Kanouda (1 patent)Tetsuya ObaraShuji Sekine (1 patent)Tetsuya ObaraTakeo Furuya (1 patent)Tetsuya ObaraMasami Joraku (1 patent)Tetsuya ObaraKazuhiro Takizawa (1 patent)Tetsuya ObaraMakoto Kawamura (1 patent)Tetsuya ObaraYoshio Miyamoto (1 patent)Tetsuya ObaraTetsuya Obara (2 patents)Hiroshi KimuraHiroshi Kimura (91 patents)Akihiko KanoudaAkihiko Kanouda (71 patents)Shuji SekineShuji Sekine (11 patents)Takeo FuruyaTakeo Furuya (10 patents)Masami JorakuMasami Joraku (4 patents)Kazuhiro TakizawaKazuhiro Takizawa (2 patents)Makoto KawamuraMakoto Kawamura (1 patent)Yoshio MiyamotoYoshio Miyamoto (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

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

2. Jidosha Denki Kogyo K.k. (1 from 34 patents)

3. Hitachi Mizusawa Electronics Co. (1 from 7 patents)


2 patents:

1. 5642269 - Power supply apparatus having separate plural outputs

2. 5069502 - Sunroof driving apparatus

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as of
12/6/2025
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