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For the Inventor, By the Inventor

San Juan Capistrano, CA, United States of America

Fluidmaster, Inc.


USPTO Granted Patents = 100

% Expired Patents = 10.0


Trademarks = 22

Forward Citations = 1,049

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97 inventors (with patents filed for the assignee):

goldMedal Tuan Van Le (35 out of 47 patents)

silverMedal Joseph U Han (21 out of 38 patents)

bronzeMedal Adolf Schoepe (12 out of 25 patents)

4.  Oscar R Dufau (9 out of 12 patents)

5.  Adam Robert Sampson (7 out of 14 patents)

6.  Jack T Nguyen (7 out of 13 patents)

7.  John C McKay (6 out of 18 patents)

8.  Arnold Hennessy (6 out of 9 patents)

9.  Matt Vargas (5 out of 9 patents)

10.  Christopher A Coppock (5 out of 5 patents)

11.  Venkat Mallela (4 out of 4 patents)

12.  Robert Collin (4 out of 5 patents)

13.  Tom Stout (4 out of 4 patents)

14.  Farid Maiwandi (4 out of 4 patents)

15.  Kabir Siddiqui (4 out of 5 patents)


Core Competencies:
Flush Valve
Pneumatic Device
Dual Flush
Toilet Mechanism
Fluid Connector
Water Treatment
Siphon Valve
Flow Regulator
Toilet Cleaning
Vacuum Toilet
Float Mechanism
Leak Detector

100 patents:

1. 12729528 - Lever assembly (2026-09-08),
2. 12674308 - Cistern system, apparatus and method (2026-07-07),
3. 12673810 - Omni configured flapper systems and packaging (2026-07-07),
4. 12428827 - Omni configured flapper systems for various flush valve sizes and methods of retrofit (2025-09-30),
5. 11946238 - Adjustable flush valve poppet assembly (2024-04-02),
6. 11939206 - Fluid control system and method (2024-03-26),
7. D1015864 - Nut (2024-02-27),
8. D1014235 - Washer (2024-02-13),
9. 11746922 - Pneumatic lost motion/binary device system and method (2023-09-05),
10. 11713817 - Balanced activation force and bistable valve system and method (2023-08-01),
11. 11643798 - Modular fluid valve (2023-05-09),
12. 11613881 - Plumbing products kit (2023-03-28),
13. 11434631 - Siphon activated valve (2022-09-06),
14. 11391391 - Discharge valve system and method (2022-07-19),
15. 11142898 - Modular fluid valve (2021-10-12),
Company Overview
Fluidmaster, Inc., based in San Juan Capistrano, California, specializes in fluid control systems, particularly for toilet mechanisms and water treatment applications. The company is renowned for its innovative solutions, including flush valves, pneumatic devices, and dual flush systems, which enhance water efficiency and performance in plumbing fixtures. With a focus on developing advanced fluid connectors and flow regulators, Fluidmaster plays a significant role in improving water management and sustainability in residential and commercial settings.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

Fluidmaster, Inc. USPTO Patent Assignee Logo
100 Patents

#1 in San Juan Capistrano, CA

#868 in California

#3,795 in US

#7,774 in the World

San Juan Capistrano, CA (US)
San Juan Capistrano, CA, United States of America

Fluidmaster, Inc.

Forward Citations = 1,049

97 inventors:

goldMedal Tuan Van Le (35 out of 47 patents)

silverMedal Joseph U Han (21 out of 38 patents)

bronzeMedal Adolf Schoepe (12 out of 25 patents)

4.  Oscar R Dufau (9 out of 12 patents)

5.  Adam Robert Sampson (7 out of 14 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Fluidmaster, Inc.. Retrieved from https://idiyas.com/company/fluidmaster

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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