Growing community of inventors

Kyoto, Japan

Hiroshi Itayama

Average Co-Inventor Count = 2.86

ph-index = 5

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 = 61

Hiroshi ItayamaTakao Ando (2 patents)Hiroshi ItayamaKatsura Gohda (2 patents)Hiroshi ItayamaEiji Ichihara (1 patent)Hiroshi ItayamaTakashi Takemoto (1 patent)Hiroshi ItayamaAtsushi Ohta (1 patent)Hiroshi ItayamaToshiro Shimada (1 patent)Hiroshi ItayamaKoji Kawaguchi (1 patent)Hiroshi ItayamaMasaya Tomioka (1 patent)Hiroshi ItayamaHiroshi Itayama (5 patents)Takao AndoTakao Ando (4 patents)Katsura GohdaKatsura Gohda (3 patents)Eiji IchiharaEiji Ichihara (4 patents)Takashi TakemotoTakashi Takemoto (2 patents)Atsushi OhtaAtsushi Ohta (1 patent)Toshiro ShimadaToshiro Shimada (1 patent)Koji KawaguchiKoji Kawaguchi (1 patent)Masaya TomiokaMasaya Tomioka (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sanyo Chemical Industries, Ltd. (4 from 353 patents)

2. Other (1 from 832,718 patents)


5 patents:

1. 6680286 - Detergent composition comprising a quaternary ammonium salt of a carboxyl containing polymer

2. 6641804 - Hair treatment and method of treating hair using compounded resin containing urethane resin

3. 5652320 - Polymer containing N-sulfoamino group, fiber formed therefrom, and

4. 5578680 - Vibration-absorbing elastomeric composite, process for making the same,

5. 5221785 - Polymer composite and rubber contacts

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as of
12/10/2025
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