Growing community of inventors

Numazu, Japan

Keisuke Katoh

Average Co-Inventor Count = 2.79

ph-index = 4

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 = 116

Keisuke KatohEmi Kita (3 patents)Keisuke KatohMasayuki Yamane (2 patents)Keisuke KatohKiyonori Tsuda (2 patents)Keisuke KatohSeiji Terazawa (2 patents)Keisuke KatohKazuhisa Sudo (2 patents)Keisuke KatohKenzo Tatsumi (2 patents)Keisuke KatohNobuyuki Taguchi (2 patents)Keisuke KatohTakeroh Kurenuma (2 patents)Keisuke KatohSatoshi Narumi (2 patents)Keisuke KatohFumio Ogata (2 patents)Keisuke KatohGoro Katsuyama (1 patent)Keisuke KatohNobuo Takami (1 patent)Keisuke KatohKeisuke Katoh (4 patents)Emi KitaEmi Kita (49 patents)Masayuki YamaneMasayuki Yamane (78 patents)Kiyonori TsudaKiyonori Tsuda (67 patents)Seiji TerazawaSeiji Terazawa (60 patents)Kazuhisa SudoKazuhisa Sudo (52 patents)Kenzo TatsumiKenzo Tatsumi (51 patents)Nobuyuki TaguchiNobuyuki Taguchi (50 patents)Takeroh KurenumaTakeroh Kurenuma (36 patents)Satoshi NarumiSatoshi Narumi (34 patents)Fumio OgataFumio Ogata (15 patents)Goro KatsuyamaGoro Katsuyama (95 patents)Nobuo TakamiNobuo Takami (57 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ricoh Company, Ltd. (4 from 28,566 patents)


4 patents:

1. 8033447 - Container storage box for deformable container containing fine particles for image formation

2. 7577379 - Toner container, toner supply device and image forming apparatus

3. 7389071 - Apparatuses for image forming capable of effectively conveying developer therefrom and a method of effectively forming a reinforcing member adhering to the apparatuses

4. 7184691 - Toner container, toner supply device and image forming apparatus

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12/25/2025
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