For the Inventor, By the Inventor

Enter assignee name

Woodbury, MN, United States of America

Ecowater Systems, Inc.

USPTO Granted Patents = 70

% Expired Patents = 4.3

CIPO Patents = 12

EPO Patents = 9

Trademarks = 28

Forward Citations = 1,017

Loading Chart...

Loading Chart...

63 inventors (with patents filed for the assignee):

Jeffrey A Zimmerman (14 out of 15 patents)

Christine Fletcher (14 out of 14 patents)

Gregory Kennedy (13 out of 13 patents)

4. Chaouki A Khamis (11 out of 47 patents)

5. Malcolm Kahn (9 out of 19 patents)

6. George L Dimotsis (9 out of 9 patents)

7. Michael J Sherman (6 out of 49 patents)

8. Robert A Astle (6 out of 124 patents)

9. Michael E Drager (6 out of 6 patents)

10. Richard Allan Kirchner (5 out of 20 patents)

11. Edward J Tischler (5 out of 8 patents)

12. Steven J Haehn (4 out of 35 patents)

13. David T Bardwell (4 out of 9 patents)

14. Ralph H Larson (4 out of 5 patents)

15. Marlin A Frank (4 out of 4 patents)

Core Competencies:

Water Softener

Modular Filtration

Reverse Osmosis

Water Treatment

Water Hardness

Electrolytic Zinc Dosing

Filter Cartridge

Brine Fill Apparatus

Resin Monitoring

Flow Control Valve

Ion Selective Electrode

Water Distiller

70 patents: Sort by Forward Citations

1. 12458914 - Modular filtration platform (2025-11-04),

2. 11981583 - Longitudinal in-situ impedance and resin monitoring sensor, and method of measuring and tracking the movement of hardness in a water softener utilizing the same (2024-05-14),

3. 11953487 - Apparatus for measuring water hardness using ion selective electrode (2024-04-09),

4. 11826683 - Modular filtration platform (2023-11-28),

5. 11667542 - Longitudinal in-situ impedance and resin monitoring sensor, and method of measuring and tracking the movement of hardness in a water softener utilizing the same (2023-06-06),

6. 11607625 - Water treatment tank with distributor plate assembly and method of assembly (2023-03-21),

7. 11583806 - Variable drain flow restrictor (2023-02-21),

8. 11391713 - Apparatus for measuring water hardness using ion selective electrode (2022-07-19),

9. 11209413 - Method for determining hardness concentration using a monovalent ion selective electrode (2021-12-28),

10. 11077392 - Modular filtration platform (2021-08-03),

11. 11016074 - Apparatus for measuring water hardness using ion selective electrode (2021-05-25),

12. 10974975 - Electrolytic zinc dosing device and method for reducing scale (2021-04-13),

13. 10954141 - Storage and delivery for a water treatment system and method of using the same (2021-03-23),

14. 10874987 - Variable drain flow restrictor (2020-12-29),

15. 10800677 - Electrolytic zinc dosing device and method for reducing scale (2020-10-13),

Ecowater Systems, Inc., based in Woodbury, MN, specializes in advanced water treatment technologies aimed at improving water quality for residential and commercial applications. The company focuses on developing innovative solutions such as water softeners, modular filtration systems, and reverse osmosis units. Their expertise extends to addressing water hardness and enhancing treatment processes through technologies like electrolytic zinc dosing and efficient filter cartridge designs, ensuring effective and sustainable water management solutions.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

Ecowater Systems, Inc.

70 Patents

#1 in Woodbury, MN

#148 in Minnesota

#5,229 in US

#10,623 in the World

Woodbury, MN, United States of America

Ecowater Systems, Inc.

Forward Citations = 1,017

63 inventors:

Jeffrey A Zimmerman (14 out of 15 patents)

Christine Fletcher (14 out of 14 patents)

Gregory Kennedy (13 out of 13 patents)

4. Chaouki A Khamis (11 out of 47 patents)

5. Malcolm Kahn (9 out of 19 patents)

Please report any incorrect information to [email protected]

Loading…