Growing community of inventors

Kitakyushu, Japan

Hiroyuki Takeuchi

Average Co-Inventor Count = 3.00

ph-index = 2

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 = 47

Hiroyuki Takeuchi ↔ Yasushi Takahashi (2 patents)Hiroyuki Takeuchi ↔ Masafumi Ishikawa (1 patent)Hiroyuki Takeuchi ↔ Rina Ogata (1 patent)Hiroyuki TakeuchiHiroyuki Takeuchi (2 patents)Yasushi TakahashiYasushi Takahashi (18 patents)Masafumi IshikawaMasafumi Ishikawa (29 patents)Rina OgataRina Ogata (15 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Toto Ltd. (2 from 1,192 patents)


2 patents:

1. D639399 - Water closet

2. D620566 - Water closet

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idiyas.com
as of
12/20/2025
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