% Expired Patents = 25.0

Trademarks = 1

Forward Citations = 17

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4 inventors (with patents filed for the assignee):

Bernard F Duesel, Jr (4 out of 43 patents)

Craig Clerkin (4 out of 27 patents)

Michael J Rutsch (3 out of 36 patents)

4. Benjamin N Laurent (1 out of 2 patents)

4 patents: Sort by Forward Citations

1. 11390791 - Apparatus for concentrating wastewater and for creating brines (2022-07-19),

2. 11383995 - Apparatus and method for treating hydrogen sulfide and ammonia in wastewater streams (2022-07-12),

3. 11376520 - Compact wastewater concentrator using waste heat (2022-07-05),

4. 9808738 - Compact wastewater concentrator using waste heat (2017-11-07),

Company Overview

Heartland Water Technology, Inc. is a leading provider of innovative water treatment solutions for residential, commercial, and industrial applications. With a focus on sustainability and efficiency, Heartland's cutting-edge technologies help customers reduce their water consumption and minimize environmental impact. Backed by a team of experts, Heartland is committed to delivering superior products and personalized service to meet the unique needs of each client.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

4 Patents

#330 in St. Louis, MO

#855 in Missouri

#60,671 in US

St. Louis, MO, United States of America

Heartland Water Technology, Inc.

Forward Citations = 17

4 inventors:

Bernard F Duesel, Jr (4 out of 43 patents)

Craig Clerkin (4 out of 27 patents)

Michael J Rutsch (3 out of 36 patents)

4. Benjamin N Laurent (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Heartland Water Technology, Inc.. Retrieved from https://idiyas.com/company/heartland-water-technology

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]