Growing community of inventors

Tanashi, Japan

Masahiro Kasaya

Average Co-Inventor Count = 3.27

ph-index = 2

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 = 7

Masahiro Kasaya ↔ Yasuo Kitajima (2 patents)Masahiro Kasaya ↔ Takayuki Hasumi (2 patents)Masahiro Kasaya ↔ Tomomi Murakami (1 patent)Masahiro Kasaya ↔ Hidetaka Tsuchiya (1 patent)Masahiro Kasaya ↔ Takanori Nakahara (1 patent)Masahiro KasayaMasahiro Kasaya (3 patents)Yasuo KitajimaYasuo Kitajima (12 patents)Takayuki HasumiTakayuki Hasumi (7 patents)Tomomi MurakamiTomomi Murakami (36 patents)Hidetaka TsuchiyaHidetaka Tsuchiya (6 patents)Takanori NakaharaTakanori Nakahara (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Citizen Watch Company, Ltd. (3 from 2,002 patents)


3 patents:

1. 5898646 - Watch with extended dial

2. 5833620 - Constant-rate deflator for sphygmomanometer

3. 5592443 - Structure of a watch and assembling method thereof

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as of
12/8/2025
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