Growing community of inventors

Nirasaki, Japan

Osamu Nagarekawa

Average Co-Inventor Count = 4.00

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 = 22

Osamu Nagarekawa ↔ Masaru Mitsui (2 patents)Osamu Nagarekawa ↔ Masao Ushida (2 patents)Osamu Nagarekawa ↔ Shigekazu Matsui (2 patents)Osamu NagarekawaOsamu Nagarekawa (2 patents)Masaru MitsuiMasaru Mitsui (23 patents)Masao UshidaMasao Ushida (10 patents)Shigekazu MatsuiShigekazu Matsui (6 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hoya Corporation (2 from 2,529 patents)


2 patents:

1. D568839 - Photomask blank

2. D543160 - Photomask blank

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idiyas.com
as of
12/17/2025
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