Growing community of inventors

Isehara, Japan

Yoshihiko Ishiyama

Average Co-Inventor Count = 1.50

ph-index = 4

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 = 75

Yoshihiko IshiyamaMakoto Yamashita (1 patent)Yoshihiko IshiyamaYasuto Wada (1 patent)Yoshihiko IshiyamaMitsuru Iizuka (1 patent)Yoshihiko IshiyamaAkihiko Umekawa (1 patent)Yoshihiko IshiyamaYoshihiko Ishiyama (5 patents)Makoto YamashitaMakoto Yamashita (3 patents)Yasuto WadaYasuto Wada (2 patents)Mitsuru IizukaMitsuru Iizuka (2 patents)Akihiko UmekawaAkihiko Umekawa (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ichikoh Industries, Ltd. (4 from 398 patents)

2. Nissan Motor Company Limited (1 from 13,402 patents)


5 patents:

1. 5594590 - Mirror-housing positioning device for car rearview mirror

2. 5172884 - Motor-driven foldable type door mirror

3. 4919526 - Electrically swingable door mirror

4. 4692000 - Motor-driven collapsible door mirror

5. 4358149 - Ash tray for vehicle

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as of
12/21/2025
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