Growing community of inventors

Kitakyushu, Japan

Koji Yamamoto

Average Co-Inventor Count = 4.00

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 = 2

Koji YamamotoMasateru Shiraishi (1 patent)Koji YamamotoSatoshi Yamazaki (1 patent)Koji YamamotoTomohiro Noguchi (1 patent)Koji YamamotoKoji Yamamoto (1 patent)Masateru ShiraishiMasateru Shiraishi (5 patents)Satoshi YamazakiSatoshi Yamazaki (4 patents)Tomohiro NoguchiTomohiro Noguchi (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

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


1 patent:

1. 10151091 - Toilet apparatus

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as of
12/20/2025
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