Growing community of inventors

Fujioka, Japan

Masafumi Hamada

Average Co-Inventor Count = 1.71

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 = 41

Masafumi HamadaSatoru Sumiyoshi (1 patent)Masafumi HamadaNaoki Tsurukawa (1 patent)Masafumi HamadaToshiharu Takekawa (1 patent)Masafumi HamadaSeiji Tokuoka (1 patent)Masafumi HamadaMasafumi Hamada (3 patents)Satoru SumiyoshiSatoru Sumiyoshi (5 patents)Naoki TsurukawaNaoki Tsurukawa (4 patents)Toshiharu TakekawaToshiharu Takekawa (1 patent)Seiji TokuokaSeiji Tokuoka (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Mitsubishi Pencil Kabushiki Kaisha (2 from 196 patents)

2. Sunstar Inc. (1 from 57 patents)


3 patents:

1. 9173478 - Oral care instrument

2. 7503718 - Cosmetic container

3. 6176396 - Fluid substance dispenser

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idiyas.com
as of
12/20/2025
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