Growing community of inventors

Hirakata, Japan

Ryoii Ishihara

Average Co-Inventor Count = 6.00

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 = 5

Ryoii Ishihara ↔ Iwao Sumiyoshi (1 patent)Ryoii Ishihara ↔ Tetsuzo Arai (1 patent)Ryoii Ishihara ↔ Masakazu Ohkita (1 patent)Ryoii Ishihara ↔ Koichi Yamada (1 patent)Ryoii Ishihara ↔ Manasori Yoshiiwa (1 patent)Ryoii IshiharaRyoii Ishihara (1 patent)Iwao SumiyoshiIwao Sumiyoshi (11 patents)Tetsuzo AraiTetsuzo Arai (5 patents)Masakazu OhkitaMasakazu Ohkita (4 patents)Koichi YamadaKoichi Yamada (1 patent)Manasori YoshiiwaManasori Yoshiiwa (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sumitomo Metal Industries, Inc. (1 from 929 patents)

2. Nippon Paint Compnay, Ltd. (1 from 827 patents)


1 patent:

1. 5279864 - Radiation curable primer coating compositions

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12/29/2025
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