Growing community of inventors

Tama, Japan

Masaru Nakagawa

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 = 11

Masaru Nakagawa ↔ Hideaki Okada (1 patent)Masaru Nakagawa ↔ Yasuaki Saito (1 patent)Masaru NakagawaMasaru Nakagawa (1 patent)Hideaki OkadaHideaki Okada (1 patent)Yasuaki SaitoYasuaki Saito (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Okada Shigyo Co., Ltd. (1 from 2 patents)

2. Iijima Products M.f.g. Co., Ltd. (1 from 1 patent)


1 patent:

1. 4133736 - Apparatus for determining an oxygen content

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as of
12/19/2025
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