Growing community of inventors

Hitachi, Japan

Masahiro Ootaka

Average Co-Inventor Count = 4.00

ph-index = 1

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 = 20

Masahiro Ootaka ↔ Makoto Hayashi (1 patent)Masahiro Ootaka ↔ Kazuo Takaku (1 patent)Masahiro Ootaka ↔ Akisuke Naruse (1 patent)Masahiro OotakaMasahiro Ootaka (1 patent)Makoto HayashiMakoto Hayashi (82 patents)Kazuo TakakuKazuo Takaku (11 patents)Akisuke NaruseAkisuke Naruse (6 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi, Ltd. (1 from 42,517 patents)


1 patent:

1. 4914378 - Method and apparatus for inspecting surface defects

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1/11/2026
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