For the Inventor, By the Inventor

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Saint Paul, MN, United States of America

Porous Media Corporation

USPTO Granted Patents = 34

EPO Patents = 3

Trademarks = 22

Forward Citations = 743

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37 inventors (with patents filed for the assignee):

Michael R Spearman (22 out of 38 patents)

John Henry Burban (10 out of 25 patents)

Robert Orvin Crowder (6 out of 10 patents)

4. Majid Zia (5 out of 35 patents)

5. Keith Allen Roberts (5 out of 29 patents)

6. Patrick Richard Spearman (4 out of 18 patents)

7. Craig Jonathan Cuta (3 out of 7 patents)

8. Mathews J Thundyil (3 out of 3 patents)

9. Daniel M Spearman (3 out of 3 patents)

10. Steven T Jersey (2 out of 52 patents)

11. Mark Mickan (2 out of 5 patents)

12. Philip M Rolchigo (2 out of 21 patents)

13. Carl Hahn (2 out of 8 patents)

14. Martin P Miller (2 out of 11 patents)

15. Kevin Carlson (2 out of 3 patents)

34 patents: Sort by Forward Citations

1. 9192880 - Toroidal filter vessel system (2015-11-24),

2. 8764980 - Filtration system and method (2014-07-01),

3. 8623215 - Membrane module for fluid filtration (2014-01-07),

4. 8540808 - Venting and filtration systems with gas permeable membrane (2013-09-24),

5. 8540807 - Venting and filtration systems with gas permeable membrane (2013-09-24),

6. 7998254 - Membrane module (2011-08-16),

7. 7875176 - Membrane module for fluid filtration (2011-01-25),

8. 7604685 - Method for the selective extraction of acids (2009-10-20),

9. 7413657 - Method for selective extraction (2008-08-19),

10. 6702880 - Inlet silencer/filter for an oxygen concentrator (2004-03-09),

11. 6692639 - Stacked conical filtration or separation apparatus (2004-02-17),

12. 6616735 - Compressed gas systems utilizing a variable pressure membrane air drier, and method of operation thereof (2003-09-09),

13. 6585808 - Membrane air dryer with integral diffuser and method of manufacture thereof (2003-07-01),

14. 6517725 - Oil dehydrator (2003-02-11),

15. 6508859 - Method and apparatus for removing air or gas from fluid (2003-01-21),

Porous Media Corporation is a leading provider of innovative filtration solutions. With a focus on advanced porous materials, we develop and manufacture high-performance filtration systems for various industries. Our products are designed to deliver exceptional results by effectively removing contaminants and improving efficiency. By combining cutting-edge technology with extensive industry knowledge, we are dedicated to delivering reliable and cost-effective filtration solutions that meet our customers' specific needs.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 2 2025

34 Patents

#41 in Saint Paul, MN

#280 in Minnesota

#9,658 in US

#19,012 in the World

Saint Paul, MN, United States of America

Porous Media Corporation

Forward Citations = 743

37 inventors:

Michael R Spearman (22 out of 38 patents)

John Henry Burban (10 out of 25 patents)

Robert Orvin Crowder (6 out of 10 patents)

4. Majid Zia (5 out of 35 patents)

5. Keith Allen Roberts (5 out of 29 patents)

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