Growing community of inventors

Hachioji, Japan

Masahir Hayakawa

Average Co-Inventor Count = 4.00

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 = 1

Masahir Hayakawa ↔ Hideya Kohara (1 patent)Masahir Hayakawa ↔ Hiroaki Itoh (1 patent)Masahir Hayakawa ↔ Gen Yokoi (1 patent)Masahir HayakawaMasahir Hayakawa (1 patent)Hideya KoharaHideya Kohara (7 patents)Hiroaki ItohHiroaki Itoh (3 patents)Gen YokoiGen Yokoi (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kabushiki Kaisha Toshiba (1 from 52,766 patents)


1 patent:

1. 7287624 - Double deck elevator

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as of
1/8/2026
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