Growing community of inventors

Kanagawa, Japan

Masato Koyama

Average Co-Inventor Count = 2.00

ph-index = 2

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 = 23

Masato KoyamaTakashi Utsunomiya (2 patents)Masato KoyamaMasato Koyama (2 patents)Takashi UtsunomiyaTakashi Utsunomiya (39 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

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


2 patents:

1. D962132 - Rear bumper for automobile

2. D940017 - Front bumper for automobile

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as of
12/16/2025
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