Growing community of inventors

Takaoka, Japan

Toshihiko Tokai

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 = 13

Toshihiko Tokai ↔ Ryoichi Shimizugawa (1 patent)Toshihiko Tokai ↔ Hisao Takehara (1 patent)Toshihiko TokaiToshihiko Tokai (1 patent)Ryoichi ShimizugawaRyoichi Shimizugawa (4 patents)Hisao TakeharaHisao Takehara (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Japan Metals & Chemicals Co., Ltd. (1 from 50 patents)


1 patent:

1. 5749935 - Manganese fertilizer

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12/4/2025
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