Growing community of inventors

Yokohama, Japan

Kinji Tsuboi

Average Co-Inventor Count = 2.00

ph-index = 1

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 = 10

Kinji Tsuboi ↔ Hiroshi Kokubo (1 patent)Kinji TsuboiKinji Tsuboi (1 patent)Hiroshi KokuboHiroshi Kokubo (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Other (1 from 832,718 patents)

2. Tokyu Car Corporation (1 from 3 patents)


1 patent:

1. 4883949 - Data reader

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as of
12/11/2025
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