% Expired Patents = 57.1

Forward Citations = 134

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4 inventors (with patents filed for the assignee):

Christian Thoma (12 out of 18 patents)

George Duncan McRae Arnold (11 out of 14 patents)

Christian Helmut Thoma (2 out of 6 patents)

4. George Duncan MacRae Arnold (1 out of 1 patent)

14 patents: Sort by Forward Citations

1. 6884195 - Hydrostatic transaxle (2005-04-26),

2. 6875147 - Hydrostatic transaxles (2005-04-05),

3. 6796121 - Hydrostatic transaxle (2004-09-28),

4. 6782699 - Hydrostatic transaxle (2004-08-31),

5. 6779421 - Hydrostatic transmission with internal fluid expansion chamber (2004-08-24),

6. 6626065 - Hydrostatic transmission with internal fluid expansion chamber (2003-09-30),

7. 6607462 - Hydrostatic transaxles (2003-08-19),

8. 6595887 - Combined hydrostatic and gear transmissions employing independent sumps (2003-07-22),

9. 6564550 - Hydrostatic transaxle (2003-05-20),

10. 6477838 - Hydrostatic machines for use in transmission and transaxle product (2002-11-12),

11. 6427442 - Hydrostatic transaxle (2002-08-06),

12. 6354975 - Combined hydrostatic and gear transmissions employing independent sumps (2002-03-12),

13. 6346059 - Hydrostatic transaxles (2002-02-12),

14. 6343471 - Hydrostatic transmissions and transaxles (2002-02-05),

Company Overview

Hydro-Thoma Limited is a company based in Jersey, GB, specializing in advanced water management solutions. The organization focuses on developing innovative technologies for water treatment and distribution, aiming to enhance efficiency and sustainability in water usage. With a commitment to environmental stewardship, Hydro-Thoma engages in research and development to create systems that address the challenges of water scarcity and quality, contributing to improved resource management in various sectors.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

14 Patents

#3 in Jersey

#1,268 in United Kingdom

#42,249 in the World

Jersey, United Kingdom

Hydro-Thoma Limited

Forward Citations = 134

4 inventors:

Christian Thoma (12 out of 18 patents)

George Duncan McRae Arnold (11 out of 14 patents)

Christian Helmut Thoma (2 out of 6 patents)

4. George Duncan MacRae Arnold (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hydro-Thoma Limited. Retrieved from https://idiyas.com/company/hydro-thoma

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]