Growing community of inventors

Nagasaki, Japan

Katsuya Ookubo

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 = 0

Katsuya OokuboTadashi Kawashima (1 patent)Katsuya OokuboNaoya Nonaka (1 patent)Katsuya OokuboKatsuya Ookubo (1 patent)Tadashi KawashimaTadashi Kawashima (8 patents)Naoya NonakaNaoya Nonaka (7 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sumco Corporation (1 from 600 patents)


1 patent:

1. 11462409 - Epitaxial silicon wafer, and method for manufacturing epitaxial silicon wafer

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12/17/2025
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