Growing community of inventors

Tokyo, Japan

Kai Endo

Average Co-Inventor Count = 1.33

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 = 39

Kai EndoKengo Nakamura (3 patents)Kai EndoKai Endo (6 patents)Kengo NakamuraKengo Nakamura (7 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Tenga Co., Ltd (6 from 73 patents)


6 patents:

1. D1092765 - Sperm sampler

2. D1050472 - Sperm sampler

3. D982773 - Sperm sampler

4. D930847 - Sperm sampler driving device

5. 11051792 - Sperm sampler driving device

6. D898215 - Sperm sampler

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as of
1/10/2026
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