For the Inventor, By the Inventor

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Minneapolis, MN, United States of America

Wanner Engineering, Inc.

USPTO Granted Patents = 20

EPO Patents = 9

Trademarks = 11

Forward Citations = 178

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21 inventors (with patents filed for the assignee):

Richard D Hembree (8 out of 8 patents)

Frederick A Powers (5 out of 44 patents)

Kenneth Eugene Lehrke (4 out of 13 patents)

4. Timothy L Sebion (4 out of 4 patents)

5. Dustin Featherstone (2 out of 4 patents)

6. Michelle Jean Miller (2 out of 2 patents)

7. Richard D Hembree (2 out of 2 patents)

8. David Poindexter (1 out of 1 patent)

9. Neil Taylor (1 out of 2 patents)

10. Matthew Wayne Hollister (1 out of 3 patents)

11. Francis Dupuis (1 out of 1 patent)

12. Aaron Jarkko Kariniemi (1 out of 1 patent)

13. Scott Cameron Losey (1 out of 1 patent)

14. Craig V Rockwell (1 out of 1 patent)

15. Peter James Meinz (1 out of 8 patents)

20 patents: Sort by Forward Citations

1. 12644451 - Balanced pressure seal for high pressure pumps (2026-06-02),

2. 12326142 - Diaphragm position control system (2025-06-10),

3. 11448205 - Diaphragm pump comprising a diaphragm connected to a control element and a pressure protection device mounted to the control element wherein the control element is intermediate the control element and the diaphragm and is configured to seal against a transfer chamber wall (2022-09-20),

4. 10920763 - Diaphragm with edge seal (2021-02-16),

5. 9964106 - Diaphragm pump with dual spring overfill limiter (2018-05-08),

6. 7665974 - Diaphragm pump position control with offset valve axis (2010-02-23),

7. D586722 - Topper with ladder rack for vehicle (2009-02-17),

8. 7467582 - Pump diaphragm rupture detection (2008-12-23),

9. 7425120 - Diaphragm position control for hydraulically driven pumps (2008-09-16),

10. 7101158 - Hydraulic balancing magnetically driven centrifugal pump (2006-09-05),

11. 7090474 - Diaphragm pump with overfill limiter (2006-08-15),

12. 6941853 - Pump diaphragm rupture detection (2005-09-13),

13. 6899530 - Diaphragm pump with a transfer chamber vent with a longitudinal notch on the piston cylinder (2005-05-31),

14. 6568559 - Termite control system with multi-fluid proportion metering and batch signal metering (2003-05-27),

15. 6536466 - Pressure regulator apparatus (2003-03-25),

Wanner Engineering, Inc. is a leading manufacturer of high-pressure sealless pumps, offering reliable and long-lasting fluid handling solutions. With over 40 years of experience, Wanner Engineering is dedicated to delivering innovative pumping solutions that meet the unique needs of various industries. Their advanced products, including Hydra-Cell pumps, combine efficient design, optimal performance, and rugged construction to provide superior reliability in challenging environments. From chemical processing to oil and gas, agriculture, and many other applications, Wanner Engineering helps customers achieve enhanced productivity and cost savings through their precise and powerful pumping solutions.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

20 Patents

#94 in Minneapolis, MN

#492 in Minnesota

#16,368 in US

#31,196 in the World

Minneapolis, MN, United States of America

Wanner Engineering, Inc.

Forward Citations = 178

21 inventors:

Richard D Hembree (8 out of 8 patents)

Frederick A Powers (5 out of 44 patents)

Kenneth Eugene Lehrke (4 out of 13 patents)

4. Timothy L Sebion (4 out of 4 patents)

5. Dustin Featherstone (2 out of 4 patents)

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