For the Inventor, By the Inventor

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Woodbury, MN, United States of America

Ecowater Systems, Inc.

USPTO Granted Patents = 70

CIPO Patents = 28

EPO Patents = 9

Trademarks = 35

Forward Citations = 989

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80 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 17 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 123 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:

Modular Filtration Platform

Water Hardness Measurement

Ion Selective Electrode

Water Treatment Tank

Variable Drain Flow Restrictor

Electrolytic Zinc Dosing

Reverse Osmosis Membrane

Wireless Water Treatment

Encapsulated Water Treatment

Water Softener Regeneration

Aeration in Water Filter

Countertop 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. is a leading provider of water treatment solutions. With over 90 years of experience, we specialize in designing and manufacturing innovative products for residential, commercial, and industrial applications. Our advanced water softeners, whole-house filtration systems, reverse osmosis units, and other technologies help improve the quality and safety of water. We are committed to sustainability and helping people access clean and healthy water.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

70 Patents

#1 in Woodbury, MN

#142 in Minnesota

#5,013 in US

#10,199 in the World

Woodbury, MN, United States of America

Ecowater Systems, Inc.

Forward Citations = 989

80 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 17 patents)

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