Growing community of inventors

Hitachi, Japan

Sadayoshi Iijima

Average Co-Inventor Count = 6.00

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 = 4

Sadayoshi Iijima ↔ Kanemasa Nomaguchi (2 patents)Sadayoshi Iijima ↔ Keishi Hamada (2 patents)Sadayoshi Iijima ↔ Fumio Tashiro (2 patents)Sadayoshi Iijima ↔ Tomiguyu Murakami (2 patents)Sadayoshi Iijima ↔ Shigemasa Otani (2 patents)Sadayoshi IijimaSadayoshi Iijima (2 patents)Kanemasa NomaguchiKanemasa Nomaguchi (5 patents)Keishi HamadaKeishi Hamada (3 patents)Fumio TashiroFumio Tashiro (2 patents)Tomiguyu MurakamiTomiguyu Murakami (2 patents)Shigemasa OtaniShigemasa Otani (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi Chemical Company, Ltd. (2 from 1,641 patents)


2 patents:

1. 5372855 - Treatment of inorganic building materials

2. 5023136 - Treated inorganic building materials

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idiyas.com
as of
1/18/2026
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