Growing community of inventors

Wakayama, Japan

Yasutoshi Isayama

Average Co-Inventor Count = 6.46

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 = 27

Yasutoshi IsayamaTetsuaki Fukushima (4 patents)Yasutoshi IsayamaMasayoshi Morii (4 patents)Yasutoshi IsayamaShoichiro Harada (4 patents)Yasutoshi IsayamaHiroshi Kitagawa (4 patents)Yasutoshi IsayamaHiroshi Abe (3 patents)Yasutoshi IsayamaKohshiro Sotoya (2 patents)Yasutoshi IsayamaHiroshi Abe (1 patent)Yasutoshi IsayamaYasutoshi Isayama (4 patents)Tetsuaki FukushimaTetsuaki Fukushima (23 patents)Masayoshi MoriiMasayoshi Morii (8 patents)Shoichiro HaradaShoichiro Harada (8 patents)Hiroshi KitagawaHiroshi Kitagawa (6 patents)Hiroshi AbeHiroshi Abe (4 patents)Kohshiro SotoyaKohshiro Sotoya (26 patents)Hiroshi AbeHiroshi Abe (133 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kao Corporation (4 from 3,600 patents)


4 patents:

1. 5444099 - Tertiary aminoalcohol ane process for producing the same, and,

2. 5315041 - Tertiary aminoalcohol and process for producing the same, and,

3. 5306735 - Polyurethane, process for producing the same, and process for producing

4. 5223547 - Polyurethane, process for producing the same, and process for producing

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12/6/2025
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