Trademarks = 2

Forward Citations = 538

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6 inventors (with patents filed for the assignee):

Sanford F Campbell (15 out of 23 patents)

Robert E Jones (6 out of 6 patents)

Suresh Cherulassery Gopalan (2 out of 32 patents)

4. Daniel Caris (1 out of 5 patents)

5. James P Ellis (1 out of 1 patent)

6. Bret Martin (1 out of 1 patent)

15 patents: Sort by Forward Citations

1. D471330 - Automatic swimming pool cleaner (2003-03-05),

2. 6423217 - Pool cleaner having vortex drive tube (2002-07-23),

3. 6379542 - Pool cleaner with righting weight assembly (2002-04-30),

4. 6357478 - Suction flow regulator (2002-03-19),

5. 6193885 - Pool cleaner debris bag (2001-02-27),

6. 6158464 - Low pressure back-up valve for pool cleaner (2000-12-12),

7. 6099091 - Traction enhanced wheel apparatus (2000-08-08),

8. 6035879 - Automatic fill valve assembly (2000-03-14),

9. D421512 - Automatic swimming pool cleaner (2000-03-07),

10. 6003184 - Automatic swimming pool cleaner (1999-12-21),

11. 5933899 - Low pressure automatic swimming pool cleaner (1999-08-10),

12. 5893188 - Automatic swimming pool cleaner (1999-04-13),

13. D379693 - Pool cleaner debris bag (1997-06-03),

14. 5603135 - Pool cleaner with replaceable mast (1997-02-18),

15. D376450 - Swimming pool cleaner (1996-12-10),

Company Overview

Letro Products, Inc. is a specialized manufacturer based in Redding, California, focusing on innovative solutions in the field of industrial and commercial products. The company is known for its expertise in developing high-quality components and systems that cater to various industries, including automotive and manufacturing. Letro Products emphasizes research and development to enhance product performance and reliability, ensuring that its offerings meet the evolving needs of its clients while maintaining a commitment to quality and sustainability.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

15 Patents

#1 in Redding, CA

#5,031 in California

#21,068 in US

#39,959 in the World

Redding, CA, United States of America

Letro Products, Inc.

Forward Citations = 538

6 inventors:

Sanford F Campbell (15 out of 23 patents)

Robert E Jones (6 out of 6 patents)

Suresh Cherulassery Gopalan (2 out of 32 patents)

4. Daniel Caris (1 out of 5 patents)

5. James P Ellis (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Letro Products, Inc.. Retrieved from https://idiyas.com/company/letro-products

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]