For the Inventor, By the Inventor

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Alameda, CA, United States of America

Aqua Metals Inc.

Calculating rank

USPTO Granted Patents = 13

% Expired Patents = 53.8

EPO Patents = 5

Trademarks = 1

Forward Citations = 22

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12 inventors (with patents filed for the assignee):

Robert Lewis Clarke (8 out of 42 patents)

Brian J Dougherty (7 out of 10 patents)

Stephen R Clarke (6 out of 10 patents)

4. Michael John King (5 out of 5 patents)

5. Michael David Hurwitz (5 out of 6 patents)

6. Samaresh Mohanta (5 out of 40 patents)

7. Selwyn Mould (2 out of 2 patents)

8. Bruce Middleton Bathurst (1 out of 2 patents)

9. Paul Edward Henning (1 out of 1 patent)

10. Richard H Clarke (1 out of 24 patents)

11. Joshua Hufford (1 out of 1 patent)

12. Benjamin Sol Taecker (1 out of 1 patent)

13. David Regan (1 out of 1 patent)

14. Brian C Dougherty (52 patents)

15. Joshua Reill (0 patent)

13 patents: Sort by Forward Citations

1. 12747511 - Systems and methods for direct oxide production (2026-09-29),

2. 12412940 - Systems and methods for metal recovery from lithium ion batteries (2025-09-09),

3. 11708640 - Systems and methods for aqueous recovery of lead from lead acid batteries with reduced electrolyte demand (2023-07-25),

4. 11239507 - Devices and method for smelterless recycling of lead acid batteries (2022-02-01),

5. 11072864 - Systems and methods for continuous alkaline lead acid battery recycling (2021-07-27),

6. 11028460 - Systems and methods for recovery of lead from lead acid batteries (2021-06-08),

7. 10962463 - System and method for measuring dissolved metal concentrations using a chemosensor film (2021-03-30),

8. 10793957 - Closed loop systems and methods for recycling lead acid batteries (2020-10-06),

9. 10689769 - Electrodeposited lead composition, methods of production, and uses (2020-06-23),

10. 10665907 - Devices and method for smelterless recycling of lead acid batteries (2020-05-26),

11. 10340561 - Devices and method for smelterless recycling of lead acid batteries (2019-07-02),

12. 10316420 - Systems and methods for continuous alkaline lead acid battery recycling (2019-06-11),

13. 9837689 - Method for smelterless recycling of lead acid batteries (2017-12-05),

Company Overview

Aqua Metals Inc. is a pioneering company based in Alameda, California, specializing in sustainable lead recycling technology. The organization focuses on developing innovative processes that enhance the efficiency and environmental impact of lead recovery from spent batteries. By utilizing a closed-loop system, Aqua Metals aims to reduce waste and promote circular economy principles within the battery industry. Their commitment to clean technology positions them as a key player in the transition towards more sustainable energy solutions.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

13 Patents

#24 in Alameda, CA

#5,664 in California

#23,863 in US

#45,104 in the World

Alameda, CA, United States of America

Aqua Metals Inc.

Forward Citations = 22

12 inventors:

Robert Lewis Clarke (8 out of 42 patents)

Brian J Dougherty (7 out of 10 patents)

Stephen R Clarke (6 out of 10 patents)

4. Michael John King (5 out of 5 patents)

5. Michael David Hurwitz (5 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Aqua Metals Inc.. Retrieved from https://idiyas.com/company/aqua-metals

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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