For the Inventor, By the Inventor

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Minneapolis, MN, United States of America

Filmtec Corporation

USPTO Granted Patents = 13

EPO Patents = 2

Trademarks = 3

Forward Citations = 678

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18 inventors (with patents filed for the assignee):

John E Cadotte (9 out of 13 patents)

Donald L Schmidt (3 out of 65 patents)

Robert J Petersen (2 out of 9 patents)

4. Joel R Racchini (2 out of 2 patents)

5. Ritchie A Wessling (2 out of 69 patents)

6. Ja-Young Koo (2 out of 3 patents)

7. Jon E Johnson (1 out of 12 patents)

8. Matthew T Bishop (1 out of 10 patents)

9. Richard F Fibiger (1 out of 15 patents)

10. Allyn R Marsh (1 out of 1 patent)

11. Russ Schaffenberg (1 out of 1 patent)

12. Roy A Davis (1 out of 2 patents)

13. Chieh-Chun Chau (1 out of 21 patents)

14. Steven Douglas Jons (1 out of 45 patents)

15. Joel-Raphael Racchini (1 out of 1 patent)

13 patents: Sort by Forward Citations

1. 7156997 - Package assembly for piperazine-based membranes (2007-01-02),

2. 6881336 - Spiral wound element with improved feed space (2005-04-19),

3. 4992485 - Microporous peek membranes and the preparation thereof (1991-02-12),

4. 4964998 - Use of treated composite polyamide membranes to separate concentrated (1990-10-23),

5. 4960518 - Treatment of composite polyamide membranes with compatible oxidants (1990-10-02),

6. 4960517 - Treatment of composite polyamide membranes via substitution with amine (1990-10-02),

7. 4895661 - Alkali resistant hyperfiltration membrane (1990-01-23),

8. 4888116 - Method of improving membrane properties via reaction of diazonium (1989-12-19),

9. 4859384 - Novel polyamide reverse osmosis membranes (1989-08-22),

10. 4834886 - Process for making alkali resistant hyperfiltration membrane and (1989-05-30),

11. 4812270 - Novel water softening membranes (1989-03-14),

12. 4812238 - Membranes prepared via reaction of diazonium compounds or precursors (1989-03-14),

13. 4277344 - Interfacially synthesized reverse osmosis membrane (1981-07-07),

Filmtec Corporation is a leading provider of high-performance reverse osmosis membranes for water purification and desalination applications. With over 30 years of experience, Filmtec membranes are known for their superior quality, reliability, and efficiency. Our membranes are used in a wide range of industries, including municipal water treatment, industrial process water, and residential water filtration. Filmtec is committed to innovation and sustainability in providing solutions for clean water worldwide.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 23 2025

13 Patents

#123 in Minneapolis, MN

#674 in Minnesota

#23,104 in US

#43,644 in the World

Minneapolis, MN, United States of America

Filmtec Corporation

Forward Citations = 678

18 inventors:

John E Cadotte (9 out of 13 patents)

Donald L Schmidt (3 out of 65 patents)

Robert J Petersen (2 out of 9 patents)

4. Joel R Racchini (2 out of 2 patents)

5. Ritchie A Wessling (2 out of 69 patents)

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