Growing community of inventors

Sagamihara, Japan

Akihiko Umekawa

Average Co-Inventor Count = 2.00

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 = 26

Akihiko UmekawaYoshihiko Ishiyama (1 patent)Akihiko UmekawaAkihiko Umekawa (1 patent)Yoshihiko IshiyamaYoshihiko Ishiyama (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ichikoh Industries, Ltd. (1 from 398 patents)


1 patent:

1. 4919526 - Electrically swingable door mirror

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12/21/2025
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