Growing community of inventors

Tama, Japan

Hiroji Ina

Average Co-Inventor Count = 3.00

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 = 20

Hiroji Ina ↔ Toshiko Shibata (2 patents)Hiroji Ina ↔ Kazuo Ina (2 patents)Hiroji InaHiroji Ina (2 patents)Toshiko ShibataToshiko Shibata (5 patents)Kazuo InaKazuo Ina (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nippon Paint Compnay, Ltd. (2 from 827 patents)


2 patents:

1. 4836987 - Test tube assembly for serum separation

2. 4803153 - Process for separating blood serum from blood

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as of
12/17/2025
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