Growing community of inventors

Kanagawa-ken, Japan

Eiji Gumbe

Average Co-Inventor Count = 1.09

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 = 37

Eiji GumbeNoriyuki Yokoyama (2 patents)Eiji GumbeEiji Gumbe (12 patents)Noriyuki YokoyamaNoriyuki Yokoyama (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Toshiba Tec Kabushiki Kaisha (11 from 6,174 patents)

2. Kabushiki Kaisha Toshiba (8 from 52,711 patents)

3. Other (1 from 832,680 patents)


12 patents:

1. 10353318 - Developer-supplying container

2. D832915 - Process unit

3. D825652 - Toner cartridge

4. 9823601 - Developer-supplying container

5. 7333751 - Electrophotographic process unit and image forming apparatus

6. 7127190 - Charger cleaning device, charger cleaning method and image forming apparatus

7. 7127197 - Image forming apparatus with stopper for preventing rotation of a developing unit

8. 6999700 - Image forming apparatus with stopper for preventing rotation of a developing unit

9. 6917778 - Image forming apparatus

10. 6862792 - Method of assembling a developing apparatus

11. 6819898 - Image forming apparatus including stopping member and backstop member to stop rotation of revolver type developing unit

12. D431593 - Supply unit for supplying a developer for a copying machine

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idiyas.com
as of
12/7/2025
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