Growing community of inventors

Higashiosaka, Japan

Keizo Kitamura

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 = 12

Keizo Kitamura ↔ Naoya Aoyama (1 patent)Keizo KitamuraKeizo Kitamura (1 patent)Naoya AoyamaNaoya Aoyama (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Yamamoto Kogaku Co., Ltd. (1 from 120 patents)


1 patent:

1. D665443 - Swimming goggles

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as of
12/18/2025
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