Growing community of inventors

Tosu, Japan

Hiroshi Sakai

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 = 11

Hiroshi SakaiHirofumi Okada (1 patent)Hiroshi SakaiHiroyuki Taketomi (1 patent)Hiroshi SakaiShinichi Hirakawa (1 patent)Hiroshi SakaiYuji Hashitani (1 patent)Hiroshi SakaiHiroshi Sakai (1 patent)Hirofumi OkadaHirofumi Okada (5 patents)Hiroyuki TaketomiHiroyuki Taketomi (4 patents)Shinichi HirakawaShinichi Hirakawa (2 patents)Yuji HashitaniYuji Hashitani (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Toppan Printing Co., Ltd. (1 from 1,268 patents)

2. Hisamitsu Pharmaceutical Company, Inc. (1 from 375 patents)

3. Okada Shigyo Co., Ltd. (1 from 2 patents)


1 patent:

1. 6964520 - Packaging bag

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as of
12/19/2025
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