Growing community of inventors

Chiba, Japan

Sachiko Kumai

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 = 13

Sachiko KumaiMitsuru Suginoya (1 patent)Sachiko KumaiKazuo Shimada (1 patent)Sachiko KumaiSachiko Kumai (1 patent)Mitsuru SuginoyaMitsuru Suginoya (22 patents)Kazuo ShimadaKazuo Shimada (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Seiko Instruments Inc (1 from 2,899 patents)


1 patent:

1. 6222604 - Display device and method of manufacturing the same

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12/19/2025
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