Growing community of inventors

Tottri, Japan

Ryuichi Okumura

Average Co-Inventor Count = 3.00

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 = 1

Ryuichi OkumuraHidemi Dohi (1 patent)Ryuichi OkumuraShingo Togawa (1 patent)Ryuichi OkumuraRyuichi Okumura (1 patent)Hidemi DohiHidemi Dohi (6 patents)Shingo TogawaShingo Togawa (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sanyo Electric Co., Ltd. (1 from 8,780 patents)

2. Tottori Sanyo Electric Co., Ltd. (1 from 143 patents)


1 patent:

1. 4541748 - Serial printer with ink roller

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as of
12/19/2025
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