Growing community of inventors

Nagahama, Japan

Norio Okumura

Average Co-Inventor Count = 6.00

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 = 2

Norio Okumura ↔ Shigeo Utsumi (1 patent)Norio Okumura ↔ Satoshi Otonari (1 patent)Norio Okumura ↔ Tateo Kanesaki (1 patent)Norio Okumura ↔ Takashi Kagiyama (1 patent)Norio Okumura ↔ Koichiro Ikushima (1 patent)Norio OkumuraNorio Okumura (1 patent)Shigeo UtsumiShigeo Utsumi (30 patents)Satoshi OtonariSatoshi Otonari (6 patents)Tateo KanesakiTateo Kanesaki (4 patents)Takashi KagiyamaTakashi Kagiyama (2 patents)Koichiro IkushimaKoichiro Ikushima (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Diafoil Company, Ltd. (1 from 59 patents)


1 patent:

1. 4708902 - Polyester films suitable for use in magnetic recording media

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as of
12/20/2025
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