Growing community of inventors

Oita, Japan

Norio Toma

Average Co-Inventor Count = 2.00

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 = 8

Norio TomaTatsuya Fukuda (1 patent)Norio TomaNorio Toma (1 patent)Tatsuya FukudaTatsuya Fukuda (36 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Asahi Medical Co., Ltd. (1 from 42 patents)


1 patent:

1. 6352642 - Leukocyte-removing filter material

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1/10/2026
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