Growing community of inventors

Nara, Japan

Keisho Nakanishi

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 = 38

Keisho Nakanishi ↔ Sakae Katayama, Deceased (1 patent)Keisho Nakanishi ↔ Masatsune Okuma (1 patent)Keisho NakanishiKeisho Nakanishi (1 patent)Sakae Katayama, DeceasedSakae Katayama, Deceased (4 patents)Masatsune OkumaMasatsune Okuma (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Katayama Chemical, Inc. (1 from 20 patents)


1 patent:

1. 5259985 - Calcium carbonate scale inhibitor having organophosphonate, water

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12/16/2025
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