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For the Inventor, By the Inventor

Tokyo, Japan

Richo Company, Ltd.


USPTO Granted Patents = 13

% Expired Patents = 7.7

Forward Citations = 242

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34 inventors (with patents filed for the assignee):

goldMedal Noriyuki Kimura (1 out of 52 patents)

silverMedal Edward L Schwartz (1 out of 135 patents)

bronzeMedal Koichi Suzuki (1 out of 171 patents)

4.  Masuyoshi Yachida (1 out of 18 patents)

5.  Peter E Hart (1 out of 94 patents)

6.  Masafumi Torii (1 out of 37 patents)

7.  Masaru Shimada (1 out of 48 patents)

8.  Brian Smithson (1 out of 8 patents)

9.  Gregory J Wolff (1 out of 90 patents)

10.  Mark Peairs (1 out of 31 patents)

11.  Yasuo Asahina (1 out of 48 patents)

12.  Hiroaki Matsui (1 out of 16 patents)

13.  Ahmad Zandi (1 out of 34 patents)

14.  Kyoji Tsutsui (1 out of 45 patents)

15.  Setsuo Soga (1 out of 21 patents)


13 patents:

1. 9225703 - Protecting end point devices (2015-12-29),
2. 6668271 - System for distributing, installing and running web applications (agents) (2003-12-23),
3. 5868821 - Thermally reversible color forming composition and thermally reversible (1999-02-09),
4. 5835465 - Magneto-optic disk drive controlling apparatus (1998-11-10),
5. 5732230 - Computer user interface for manipulating image fragments using drag, (1998-03-24),
6. 5731988 - Method and apparatus for reversible color conversion (1998-03-24),
7. 5649215 - Language parsing device and method for same (1997-07-15),
8. 5602939 - Specific document discriminating apparatus and image reading apparatus (1997-02-11),
9. D356108 - Toner replenisher (1995-03-07),
10. 5258819 - Image forming apparatus having a revolver type developing device (1993-11-02),
11. D284086 - Sorter for copying machine (1986-06-03),
12. 4586059 - Collected toner conveying device of electrostatic recording apparatus (1986-04-29),
13. 4284875 - Heat roller fixing apparatus (1981-08-18),
Company Overview
Ricoh Company, Ltd. is a global leader in imaging and electronics, specializing in document management solutions, printing technologies, and IT services. The company develops innovative products that enhance productivity and efficiency across various sectors, including business, education, and healthcare. With a strong emphasis on sustainability, Ricoh integrates advanced technologies such as cloud computing and artificial intelligence into its offerings, aiming to support digital transformation and improve operational workflows for its clients worldwide.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

13 Patents

#1,660 in Tokyo

#3,749 in Japan

#45,039 in the World

Tokyo, JP
Tokyo, Japan

Richo Company, Ltd.

Forward Citations = 242

34 inventors:

goldMedal Noriyuki Kimura (1 out of 52 patents)

silverMedal Edward L Schwartz (1 out of 135 patents)

bronzeMedal Koichi Suzuki (1 out of 171 patents)

4.  Masuyoshi Yachida (1 out of 18 patents)

5.  Peter E Hart (1 out of 94 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Richo Company, Ltd.. Retrieved from https://idiyas.com/company/richo-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]
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