Growing community of inventors

Shisui, Japan

Toshifumi Yamada

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

Toshifumi Yamada ↔ Tadanori Tanaka (1 patent)Toshifumi Yamada ↔ Katuhyosi Takase (1 patent)Toshifumi Yamada ↔ Kazuhiro Muramatsu (1 patent)Toshifumi Yamada ↔ Tosikazu Ebata (1 patent)Toshifumi Yamada ↔ Masao Nakamura (1 patent)Toshifumi YamadaToshifumi Yamada (1 patent)Tadanori TanakaTadanori Tanaka (2 patents)Katuhyosi TakaseKatuhyosi Takase (1 patent)Kazuhiro MuramatsuKazuhiro Muramatsu (1 patent)Tosikazu EbataTosikazu Ebata (1 patent)Masao NakamuraMasao Nakamura (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Horikiri Spring Mfg., Co., Ltd. (1 from 2 patents)


1 patent:

1. 5100482 - Method of preparing a leaf spring

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as of
12/15/2025
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