Growing community of inventors

Takasaki, Japan

Ryuji Ishii

Average Co-Inventor Count = 3.60

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 = 11

Ryuji IshiiSadao Sone (3 patents)Ryuji IshiiShuuiti Hiratuka (2 patents)Ryuji IshiiTakashi Okada (1 patent)Ryuji IshiiIkuo Suto (1 patent)Ryuji IshiiMasatoshi Kawaji (1 patent)Ryuji IshiiTakahiro Amada (1 patent)Ryuji IshiiRyuji Ishii (3 patents)Sadao SoneSadao Sone (5 patents)Shuuiti HiratukaShuuiti Hiratuka (2 patents)Takashi OkadaTakashi Okada (54 patents)Ikuo SutoIkuo Suto (2 patents)Masatoshi KawajiMasatoshi Kawaji (2 patents)Takahiro AmadaTakahiro Amada (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Oki Electric Industry Co., Ltd. (3 from 4,979 patents)


3 patents:

1. 6257475 - Apparatus for issuing a ticket

2. 6253996 - Medium handling apparatus

3. 6092798 - Ticket issuing apparatus

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as of
12/21/2025
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