Growing community of inventors

Yokkaichi, Japan

Keiji Fujita

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 = 14

Keiji Fujita ↔ Hirotaka Yamasaki (1 patent)Keiji Fujita ↔ Shigeru Kamimori (1 patent)Keiji Fujita ↔ Tokuyuki Yoshimoto (1 patent)Keiji Fujita ↔ Yoshikazu Hirao (1 patent)Keiji Fujita ↔ Akihisa Ogawa (1 patent)Keiji FujitaKeiji Fujita (1 patent)Hirotaka YamasakiHirotaka Yamasaki (6 patents)Shigeru KamimoriShigeru Kamimori (3 patents)Tokuyuki YoshimotoTokuyuki Yoshimoto (2 patents)Yoshikazu HiraoYoshikazu Hirao (1 patent)Akihisa OgawaAkihisa Ogawa (1 patent)
..
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. 6087539 - Process for producing an ether compound

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as of
12/20/2025
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