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Minneapolis, MN, United States of America

The Lemna Corporation

USPTO Granted Patents = 15

Trademarks = 1

Forward Citations = 258

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15 inventors (with patents filed for the assignee):

Viet H Ngo (6 out of 7 patents)

Warren D Poole (5 out of 6 patents)

Sean J Hancock (4 out of 5 patents)

4. Timothy T France (4 out of 5 patents)

5. Surya R Pidaparti (3 out of 3 patents)

6. Lawrence J DeVore (3 out of 3 patents)

7. Victor V Sygen (3 out of 3 patents)

8. David J Burton (2 out of 5 patents)

9. Steven M Vogel (2 out of 3 patents)

10. David M Anderson (1 out of 1 patent)

11. Gary L D'Heilly (1 out of 1 patent)

12. Brian J Midtling (1 out of 1 patent)

13. John R Dorner (1 out of 1 patent)

14. David W McAnaney (1 out of 1 patent)

15. Delman R Hogen (1 out of 1 patent)

15 patents: Sort by Forward Citations

1. 6136194 - Method and device for treating wastewater (2000-10-24),

2. 5861095 - Method and device for treating wastewater (1999-01-19),

3. 5736047 - Hybrid biological nutrient removal system (1998-04-07),

4. 5534141 - Wastewater treatment system with in-pond clarifier (1996-07-09),

5. 5421999 - Floating nitrification reactor in a treatment pond (1995-06-06),

6. 5409601 - Floating aquatic plant treatment system (1995-04-25),

7. 5338452 - High rate anaerobic reactor for primary treatment of high strength (1994-08-16),

8. 5264127 - Floating aquatic plant water treatment system with sprayer system (1993-11-23),

9. 5256281 - Baffle system for anaerobic sewage treatment pond (1993-10-26),

10. 5235797 - Method of harvesting aquatic plants (1993-08-17),

11. 5197263 - Method and apparatus for harvesting aquatic plants (1993-03-30),

12. 5180501 - Floating aquatic plant water treatment system (1993-01-19),

13. 5161354 - Aquatic plant harvester (1992-11-10),

14. 5096577 - Floating aquatic plant water treatment system (1992-03-17),

15. 4536988 - Aquatic biomass containment barrier and method of assembling same (1985-08-27),

The Lemna Corporation, based in Minneapolis, MN, specializes in innovative solutions for environmental sustainability and resource management. The company focuses on developing advanced technologies that enhance water treatment processes and promote ecological balance. With a commitment to research and development, Lemna aims to address critical challenges in water quality and environmental health, leveraging its expertise to create effective, sustainable systems that benefit both industries and communities.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

15 Patents

#118 in Minneapolis, MN

#617 in Minnesota

#21,026 in US

#39,846 in the World

Minneapolis, MN, United States of America

The Lemna Corporation

Forward Citations = 258

15 inventors:

Viet H Ngo (6 out of 7 patents)

Warren D Poole (5 out of 6 patents)

Sean J Hancock (4 out of 5 patents)

4. Timothy T France (4 out of 5 patents)

5. Surya R Pidaparti (3 out of 3 patents)

Please report any incorrect information to [email protected]

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