Growing community of inventors

Sakai, Japan

Masayuki Arakawa

Average Co-Inventor Count = 1.17

ph-index = 7

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 = 106

Masayuki ArakawaSatoshi Shahana (2 patents)Masayuki ArakawaNobukatsu Hara (2 patents)Masayuki ArakawaShinya Oseto (1 patent)Masayuki ArakawaMasayuki Arakawa (10 patents)Satoshi ShahanaSatoshi Shahana (137 patents)Nobukatsu HaraNobukatsu Hara (74 patents)Shinya OsetoShinya Oseto (9 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Shimano Inc. (10 from 3,307 patents)


10 patents:

1. D579825 - Bicycle chain ring cover

2. D561075 - Bicycle shifter

3. D561076 - Bicycle shifter

4. D551131 - Rear derailleur

5. 7166048 - Bicycle derailleur with protective support

6. D534102 - Bicycle derailleur

7. D534103 - Rear derailleur

8. D532342 - Bicycle crank

9. D527315 - Bicycle crank arm portion

10. 7090603 - Rear derailleur with a shock absorber disposed between a base member and a mounting member

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as of
1/2/2026
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