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For the Inventor, By the Inventor

Minneapolis, MN, United States of America

Filmtec Corporation


USPTO Granted Patents = 13


Trademarks = 2

Forward Citations = 681

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18 inventors (with patents filed for the assignee):

goldMedal John E Cadotte (9 out of 13 patents)

silverMedal Donald L Schmidt (3 out of 65 patents)

bronzeMedal 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 46 patents)

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


13 patents:

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),
Company Overview
Filmtec Corporation, based in Minneapolis, MN, specializes in the development and manufacturing of advanced membrane technologies for water treatment and separation processes. The company focuses on providing innovative solutions for various applications, including desalination, wastewater treatment, and industrial processes. With a commitment to sustainability and efficiency, Filmtec plays a crucial role in addressing global water challenges through its cutting-edge research and technology in membrane filtration and separation science.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

13 Patents

#132 in Minneapolis, MN

#687 in Minnesota

#23,838 in US

#45,039 in the World

Minneapolis, MN (US)
Minneapolis, MN, United States of America

Filmtec Corporation

Forward Citations = 681

18 inventors:

goldMedal John E Cadotte (9 out of 13 patents)

silverMedal Donald L Schmidt (3 out of 65 patents)

bronzeMedal 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)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Filmtec Corporation. Retrieved from https://idiyas.com/company/filmtec

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]
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