Growing community of inventors

Tokyo, Japan

Hiroaki Umezu

Average Co-Inventor Count = 3.00

ph-index = 4

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 = 61

Hiroaki UmezuTaiji Kambayashi (2 patents)Hiroaki UmezuHideyuki Mekata (2 patents)Hiroaki UmezuTadashi Hanaoka (2 patents)Hiroaki UmezuHiroshi Matsunaga (2 patents)Hiroaki UmezuAkira Kishi (1 patent)Hiroaki UmezuGinichi Shigaraki (1 patent)Hiroaki UmezuHiroshi Yamagami (1 patent)Hiroaki UmezuHiroaki Umezu (5 patents)Taiji KambayashiTaiji Kambayashi (12 patents)Hideyuki MekataHideyuki Mekata (5 patents)Tadashi HanaokaTadashi Hanaoka (4 patents)Hiroshi MatsunagaHiroshi Matsunaga (2 patents)Akira KishiAkira Kishi (2 patents)Ginichi ShigarakiGinichi Shigaraki (1 patent)Hiroshi YamagamiHiroshi Yamagami (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Osaka Organic Chemical Industry Co., Ltd. (2 from 9 patents)

2. Snova Corporation (2 from 2 patents)

3. Misawa Homes K.k. (2 from 2 patents)

4. Misawa Home Co., Ltd. (1 from 7 patents)


5 patents:

1. 5753370 - Artifical snowseed and method for making artificial snow

2. 5660935 - Artificial snowseed and method for making artificial snow

3. 4517799 - Heat utilizing system using internal combustion engine

4. 4450659 - Horizontal force resisting building structure and attachment for

5. 4435927 - Modular building structure and module for it

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as of
12/24/2025
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