Growing community of inventors

Tokyo, Japan

Yoichi Utaka

Average Co-Inventor Count = 3.60

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 = 11

Yoichi UtakaTakuji Nomura (2 patents)Yoichi UtakaNaoki Takashima (2 patents)Yoichi UtakaToshiyuki Tezuka (2 patents)Yoichi UtakaKenji Kuwana (2 patents)Yoichi UtakaAkio Watanabe (2 patents)Yoichi UtakaYuichi Yomogida (1 patent)Yoichi UtakaYoichi Utaka (3 patents)Takuji NomuraTakuji Nomura (21 patents)Naoki TakashimaNaoki Takashima (5 patents)Toshiyuki TezukaToshiyuki Tezuka (5 patents)Kenji KuwanaKenji Kuwana (4 patents)Akio WatanabeAkio Watanabe (3 patents)Yuichi YomogidaYuichi Yomogida (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ricoh Company, Ltd. (3 from 28,544 patents)


3 patents:

1. 8149424 - Image processing device and information processing device

2. 7523073 - Charging method and charging apparatus

3. 7286782 - Charge method, charge apparatus, and charge program for charging usage fee including print fee and format fee of an image forming apparatus

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as of
12/7/2025
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