Growing community of inventors

Higashiyamato, Japan

Takashi Hasegawa

Average Co-Inventor Count = 1.33

ph-index = 2

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 = 45

Takashi HasegawaKei Ooyama (1 patent)Takashi HasegawaTakashi Hasegawa (2 patents)Kei OoyamaKei Ooyama (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. France Bed Co., Ltd. (2 from 57 patents)


2 patents:

1. 7017210 - Rising-type bed apparatus and mattress

2. 5608932 - Articulated bed apparatus

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as of
12/16/2025
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