Growing community of inventors

Hyogo, Japan

Keiji Sakai

Average Co-Inventor Count = 3.00

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 = 0

Keiji SakaiAkira Koyahata (1 patent)Keiji SakaiShoji Watanabe (1 patent)Keiji SakaiTomonori Nakashita (1 patent)Keiji SakaiTakuya Watanabe (1 patent)Keiji SakaiKiyotsuna Kuchiki (1 patent)Keiji SakaiHiroshi Nakashioya (1 patent)Keiji SakaiKeiji Sakai (3 patents)Akira KoyahataAkira Koyahata (7 patents)Shoji WatanabeShoji Watanabe (2 patents)Tomonori NakashitaTomonori Nakashita (2 patents)Takuya WatanabeTakuya Watanabe (2 patents)Kiyotsuna KuchikiKiyotsuna Kuchiki (2 patents)Hiroshi NakashioyaHiroshi Nakashioya (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kobelco Construction Machinery Co., Ltd. (3 from 626 patents)


3 patents:

1. 12195310 - Crane

2. 11981542 - Hoisting implement, hoisting implement system, and method for using hoisting implement system

3. 10053159 - Cabin support deck

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idiyas.com
as of
12/8/2025
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