Growing community of inventors

Hachioji, Japan

Sayaka Koga

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 = 4

Sayaka KogaMakoto Tomioka (1 patent)Sayaka KogaSayaka Koga (1 patent)Makoto TomiokaMakoto Tomioka (17 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Olympus Optical Company, Ltd. (1 from 5,729 patents)


1 patent:

1. 6036343 - Illumination system for endoscopes

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1/23/2026
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