Growing community of inventors

Tokyo, Japan

Masao Iijima

Average Co-Inventor Count = 4.29

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 = 13

Masao IijimaTadao Hamaya (2 patents)Masao IijimaSadami Ishibashi (2 patents)Masao IijimaTadashi Imai (2 patents)Masao IijimaHiroshi Sato (1 patent)Masao IijimaHajime Goto (1 patent)Masao IijimaHiroshi Okano (1 patent)Masao IijimaYosuke Miyamoto (1 patent)Masao IijimaMasao Iijima (3 patents)Tadao HamayaTadao Hamaya (3 patents)Sadami IshibashiSadami Ishibashi (2 patents)Tadashi ImaiTadashi Imai (2 patents)Hiroshi SatoHiroshi Sato (3 patents)Hajime GotoHajime Goto (1 patent)Hiroshi OkanoHiroshi Okano (1 patent)Yosuke MiyamotoYosuke Miyamoto (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Mitsui Co., Ltd. (2 from 37 patents)

2. Ricom Corporation (2 from 3 patents)

3. Zeria Pharmaceutical Co., Ltd. (1 from 45 patents)

4. Zeria-shinyaku Kogyo Kabushiki Kaisha (1 from 7 patents)

5. Zeria Pharmaceuticals (1 from 1 patent)


3 patents:

1. 5804174 - Deodorizer

2. 5639470 - Deodorizer

3. 4610891 - Process for sugar-coating solid preparation

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as of
12/7/2025
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