Growing community of inventors

Chiba, Japan

Kimiyo Ohtsu

Average Co-Inventor Count = 5.00

ph-index = 3

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 = 16

Kimiyo Ohtsu ↔ Yoshihiro Naruse (4 patents)Kimiyo Ohtsu ↔ Masato Takagi (4 patents)Kimiyo Ohtsu ↔ Norihide Enomoto (4 patents)Kimiyo Ohtsu ↔ Keiji Sugiura (4 patents)Kimiyo OhtsuKimiyo Ohtsu (4 patents)Yoshihiro NaruseYoshihiro Naruse (37 patents)Masato TakagiMasato Takagi (9 patents)Norihide EnomotoNorihide Enomoto (9 patents)Keiji SugiuraKeiji Sugiura (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kawasaki Steel Corporation (4 from 1,256 patents)


4 patents:

1. 5229449 - Copolymer of polymerizable components in naphtha oil and maleic

2. 5191049 - Copolymer of polymerizable components in naphtha oil and maleic

3. 5179170 - Dispersant and cement admixture

4. 5166275 - Copolymer of polymerizable components in naphtha oil and maleic

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as of
1/3/2026
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