Growing community of inventors

Yamanashi-ken, Japan

Hirofumi Watanaba

Average Co-Inventor Count = 2.40

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 = 39

Hirofumi WatanabaYoshikazu Hamada (1 patent)Hirofumi WatanabaMitsuhiro Watanabe (1 patent)Hirofumi WatanabaManabu Nakajima (1 patent)Hirofumi WatanabaHirofumi Watanaba (2 patents)Yoshikazu HamadaYoshikazu Hamada (14 patents)Mitsuhiro WatanabeMitsuhiro Watanabe (9 patents)Manabu NakajimaManabu Nakajima (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Mitsui Kinzoku Kogyo Kabushiki Kaisha (2 from 151 patents)


2 patents:

1. 6135513 - Operational apparatus for vehicle slide door

2. 5867940 - Powered sliding device for a vehicle sliding door

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as of
12/18/2025
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