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For the Inventor, By the Inventor

Osaka, Japan

Ricos Co., Ltd.


USPTO Granted Patents = 20


Forward Citations = 1,079

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8 inventors (with patents filed for the assignee):

goldMedal Mihoji Tsumura (18 out of 20 patents)

silverMedal Shinnosuke Taniguchi (7 out of 9 patents)

bronzeMedal Masato Hata (3 out of 3 patents)

4.  Toshihiko Umeda (2 out of 5 patents)

5.  Masaaki Hamada (1 out of 30 patents)

6.  Tomoyuki Tanaka (1 out of 1 patent)

7.  Yasuhiro Maruyama (1 out of 1 patent)

8.  Itsuma Tsugami (1 out of 1 patent)


20 patents:

1. 6018726 - Method of billing for information services in conjunction with utilities (2000-01-25),
2. 5729740 - Information service billing system using radio communications (1998-03-17),
3. 5547202 - Computer game device (1996-08-20),
4. 5526435 - Communications apparatus for scrambling data and synchronizing a (1996-06-11),
5. 5499922 - Backing chorus reproducing device in a karaoke device (1996-03-19),
6. 5453570 - Karaoke authoring apparatus (1995-09-26),
7. 5365576 - Data and speech transmission device (1994-11-15),
8. 5357505 - Device for bidirectional communication on a telephone line (1994-10-18),
9. 5353337 - Device for the transmission of data by telephone line (1994-10-04),
10. 5299258 - Information input/output controller for telephone lines (1994-03-29),
11. 5294746 - Backing chorus mixing device and karaoke system incorporating said device (1994-03-15),
12. 5291548 - Distributed telephone conference control device (1994-03-01),
13. 5262765 - Animation image composition and display device (1993-11-16),
14. 5250747 - Karaoke music reproduction device (1993-10-05),
15. 5250745 - Karaoke music selection device (1993-10-05),
Company Overview
Ricos Co., Ltd., based in Osaka, Japan, specializes in the development and manufacturing of advanced electronic components and systems. The company focuses on innovative solutions in the fields of telecommunications, automotive electronics, and industrial automation. Ricos is dedicated to enhancing connectivity and efficiency through cutting-edge technology, contributing to various sectors by providing reliable and high-performance products tailored to meet the evolving needs of its clients.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

20 Patents

#321 in Osaka

#2,944 in Japan

#31,264 in the World

Osaka, JP
Osaka, Japan

Ricos Co., Ltd.

Forward Citations = 1,079

8 inventors:

goldMedal Mihoji Tsumura (18 out of 20 patents)

silverMedal Shinnosuke Taniguchi (7 out of 9 patents)

bronzeMedal Masato Hata (3 out of 3 patents)

4.  Toshihiko Umeda (2 out of 5 patents)

5.  Masaaki Hamada (1 out of 30 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ricos Co., Ltd.. Retrieved from https://idiyas.com/company/ricos-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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