Growing community of inventors

Kashiba, Japan

Sadanobu Yoshikawa

Average Co-Inventor Count = 2.40

ph-index = 1

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 = 18

Sadanobu Yoshikawa ↔ Eiichi Iishi (1 patent)Sadanobu Yoshikawa ↔ Susumu Nishizawa (1 patent)Sadanobu Yoshikawa ↔ Chiharu Maeda (1 patent)Sadanobu Yoshikawa ↔ Susumu Sumika Fine Chemicals Co Ltd Nishizawa (0 patent)Sadanobu YoshikawaSadanobu Yoshikawa (2 patents)Eiichi IishiEiichi Iishi (7 patents)Susumu NishizawaSusumu Nishizawa (2 patents)Chiharu MaedaChiharu Maeda (2 patents)Susumu Sumika Fine Chemicals Co Ltd NishizawaSusumu Sumika Fine Chemicals Co Ltd Nishizawa (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sumika Fine Chemicals, Co.,ltd. (2 from 55 patents)

2. Nissan Chemical Industries Limited (1 from 1,235 patents)

3. Sumitomo Chemical Company, Limited (6,892 patents)


2 patents:

1. 6852862 - Process for producing quinoline-3-carboxylic acid compound

2. 6660730 - Anhydrous mirtazapine and process for preparing the same

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as of
12/7/2025
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