Growing community of inventors

Kanagawa, Japan

Keiji Nagai

Average Co-Inventor Count = 3.36

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 = 8

Keiji NagaiMasato Takahashi (4 patents)Keiji NagaiYutaka Nakamura (4 patents)Keiji NagaiKoji Dan (4 patents)Keiji NagaiYuuki Inoue (4 patents)Keiji NagaiFujio Takahashi (4 patents)Keiji NagaiYoshiaki Murata (4 patents)Keiji NagaiShogo Hyakutake (3 patents)Keiji NagaiKenichi Takeda (2 patents)Keiji NagaiKeiji Nagai (5 patents)Masato TakahashiMasato Takahashi (82 patents)Yutaka NakamuraYutaka Nakamura (18 patents)Koji DanKoji Dan (10 patents)Yuuki InoueYuuki Inoue (7 patents)Fujio TakahashiFujio Takahashi (6 patents)Yoshiaki MurataYoshiaki Murata (4 patents)Shogo HyakutakeShogo Hyakutake (23 patents)Kenichi TakedaKenichi Takeda (103 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ricoh Company, Ltd. (5 from 28,544 patents)


5 patents:

1. 8954350 - Order supporting apparatus, control method for an order supporting apparatus, order supporting system, and computer readable storage medium

2. 8422052 - Printing system and host apparatus

3. 8135622 - Order support system, device monitoring method, and program product

4. 8005725 - Order supporting system, order supporting method, and recording medium

5. 7912944 - Information processing apparatus, process control method, and process control program product

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as of
12/7/2025
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