Growing community of inventors

Tokyo, Japan

Tatsuo Nara

Average Co-Inventor Count = 7.00

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 = 12

Tatsuo Nara ↔ Saburo Koyama (1 patent)Tatsuo Nara ↔ Shigeo Hara (1 patent)Tatsuo Nara ↔ Kenji Onodera (1 patent)Tatsuo Nara ↔ Seiichi Shido (1 patent)Tatsuo Nara ↔ Toshio Saito (1 patent)Tatsuo Nara ↔ Yasunori Tomari (1 patent)Tatsuo NaraTatsuo Nara (1 patent)Saburo KoyamaSaburo Koyama (7 patents)Shigeo HaraShigeo Hara (4 patents)Kenji OnoderaKenji Onodera (3 patents)Seiichi ShidoSeiichi Shido (3 patents)Toshio SaitoToshio Saito (2 patents)Yasunori TomariYasunori Tomari (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Idemitsu Kosan Company, Limited (1 from 2,271 patents)


1 patent:

1. 5171903 - Lubricating oil composition

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as of
12/19/2025
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