Growing community of inventors

Osaka, Japan

Shigeyuki Sakai

Average Co-Inventor Count = 5.00

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 = 22

Shigeyuki SakaiShoji Yuyama (2 patents)Shigeyuki SakaiYasuhiro Shigeyama (2 patents)Shigeyuki SakaiTakayuki Fujikawa (2 patents)Shigeyuki SakaiHiroyuki Kanda (2 patents)Shigeyuki SakaiShigeyuki Sakai (2 patents)Shoji YuyamaShoji Yuyama (144 patents)Yasuhiro ShigeyamaYasuhiro Shigeyama (18 patents)Takayuki FujikawaTakayuki Fujikawa (9 patents)Hiroyuki KandaHiroyuki Kanda (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Yuyama Mfg. Co., Ltd. (2 from 249 patents)


2 patents:

1. 8678231 - Medicine dispensing device

2. 7686184 - Medicine dispensing device

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as of
12/16/2025
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