% Expired Patents = 33.3

Forward Citations = 85

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30 inventors (with patents filed for the assignee):

Wataru Takahashi (1 out of 205 patents)

Juichi Furukawa (1 out of 37 patents)

Takaaki Shirai (1 out of 9 patents)

4. Yohsuke Haraguchi (1 out of 52 patents)

5. Naohiro Toda (1 out of 54 patents)

6. Nobuyoshi Suzuki (1 out of 124 patents)

7. Makoto Hidaka (1 out of 74 patents)

8. Koki Sakano (1 out of 31 patents)

9. Akira Kunieda (1 out of 92 patents)

10. Takuya Morinaga (1 out of 62 patents)

11. Mayumi Yoshida (1 out of 15 patents)

12. Yuusuke Shibasaki (1 out of 66 patents)

13. Hidefumi Nagashima (1 out of 30 patents)

14. Kohji Sakai (1 out of 78 patents)

15. Hiromichi Atsuumi (1 out of 69 patents)

6 patents: Sort by Forward Citations

1. 10097711 - Sheet processing device and image forming system (2018-10-09),

2. 9663668 - Inkjet ink, inkjet recording method and ink recorded matter (2017-05-30),

3. 9541867 - Apparatus, method, and non-transitory recording medium for power generation using heat in image forming apparatus (2017-01-10),

4. 6596985 - Multi-beam scanning device, multi-beam scanning method, light source device, and image forming apparatus (2003-07-22),

5. 5272507 - Charging device for electrophotographic equipment (1993-12-21),

6. 4796095 - Method of generating image scanning clock signals in optical scanning (1989-01-03),

Company Overview

Ricoh Company, Limited is a Japanese multinational imaging and electronics company. Founded in 1936, it provides products, software, and services to customers worldwide. Ricoh focuses on improving sustainability and reducing environmental impact with its innovative solutions.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

6 Patents

#2,469 in Tokyo

#5,989 in Japan

Tokyo, Japan

Rioch Company, Limited

Forward Citations = 85

30 inventors:

Wataru Takahashi (1 out of 205 patents)

Juichi Furukawa (1 out of 37 patents)

Takaaki Shirai (1 out of 9 patents)

4. Yohsuke Haraguchi (1 out of 52 patents)

5. Naohiro Toda (1 out of 54 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Rioch Company, Limited. Retrieved from https://idiyas.com/company/rioch-company

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]