Growing community of inventors

Kitakyushu, Japan

Nobuhiko Umeda

Average Co-Inventor Count = 3.96

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 = 10

Nobuhiko UmedaTakeshi Hayashida (5 patents)Nobuhiko UmedaShuhei Nishiyama (4 patents)Nobuhiko UmedaTakeshi Inada (4 patents)Nobuhiko UmedaMinoru Sato (3 patents)Nobuhiko UmedaYutaro Terada (1 patent)Nobuhiko UmedaYoshiharu Mitsuhashi (1 patent)Nobuhiko UmedaHideaki Toma (1 patent)Nobuhiko UmedaNobuhiko Umeda (6 patents)Takeshi HayashidaTakeshi Hayashida (7 patents)Shuhei NishiyamaShuhei Nishiyama (4 patents)Takeshi InadaTakeshi Inada (4 patents)Minoru SatoMinoru Sato (26 patents)Yutaro TeradaYutaro Terada (2 patents)Yoshiharu MitsuhashiYoshiharu Mitsuhashi (1 patent)Hideaki TomaHideaki Toma (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Toto Ltd. (6 from 1,194 patents)


6 patents:

1. 11191399 - Toilet seat

2. 11033159 - Toilet seat

3. 10874267 - Toilet seat

4. 10738451 - Water storage tank, hot water storage-type heat exchanger, and sanitary washing device

5. 10682026 - Toilet seat

6. 10136772 - Toilet seat and method of manufacturing a toilet seat

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as of
12/30/2025
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