Growing community of inventors

Inagi, Japan

Toshihito Umegaki

Average Co-Inventor Count = 5.00

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

Toshihito Umegaki ↔ Ken Tanaka (1 patent)Toshihito Umegaki ↔ Hisamatsu Nakano (1 patent)Toshihito Umegaki ↔ Iichi Wako (1 patent)Toshihito Umegaki ↔ Seiken Fujita (1 patent)Toshihito UmegakiToshihito Umegaki (1 patent)Ken TanakaKen Tanaka (35 patents)Hisamatsu NakanoHisamatsu Nakano (23 patents)Iichi WakoIichi Wako (4 patents)Seiken FujitaSeiken Fujita (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi-kokusai Electric Inc. (1 from 1,257 patents)

2. Yagi Antenna Inc. (1 from 4 patents)


1 patent:

1. 8193989 - Antenna apparatus

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as of
12/7/2025
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