For the Inventor, By the Inventor

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Hendersonville, NC, United States of America

Porvair Corporation

Calculating rank

USPTO Granted Patents = 26

% Expired Patents = 42.3

CIPO Patents = 2

EPO Patents = 5

Trademarks = 6

Forward Citations = 557

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32 inventors (with patents filed for the assignee):

Leonard S Aubrey (8 out of 10 patents)

Kenneth R Butcher (4 out of 17 patents)

Rudolph A Olson, Iii (3 out of 7 patents)

4. Feng Chi (3 out of 3 patents)

5. David P Haack (3 out of 3 patents)

6. Gary R Pickrell (3 out of 15 patents)

7. David Leonard Boutle (3 out of 4 patents)

8. Myron K Redden (2 out of 4 patents)

9. Chi Li Lin (2 out of 2 patents)

10. Victor Ralph Cunningham (2 out of 2 patents)

11. Eric Albert Warwicker (2 out of 2 patents)

12. Lucas Damoah (1 out of 1 patent)

13. Matthew W Willer (1 out of 1 patent)

14. Christopher J Plantec (1 out of 1 patent)

15. Mark J Topolski (1 out of 1 patent)

Core Competencies:

Corrosion Resistant

Ceramic Foam

Aluminum Filtration

Metal Foam

Filtration Effectiveness

Porous Materials

Thermal Expansion

Fuel Cell

Microplates

Inoculant-Strainer

Water Vapor Permeable

Brazed Metal Article

26 patents: Sort by Forward Citations

1. 9504944 - [object Object] (2016-11-29),

2. 9458523 - Corrosion resistant glass coating applied to ceramic foam used to filter molten aluminum (2016-10-04),

3. 8518528 - Low expansion corrosion resistant ceramic foam filters for molten aluminum filtration (2013-08-27),

4. 8486176 - Method for filtering molten aluminum and molten aluminum alloys (2013-07-16),

5. 8202346 - Porous reticulated metal foam for filtering molten magnesium (2012-06-19),

6. 7718114 - Ceramic foam filter for better filtration of molten iron (2010-05-18),

7. 7585455 - Compact micro-porous media degasser (2009-09-08),

8. 7328831 - Method of making a brazed metal article and the article formed thereby (2008-02-12),

9. 7316721 - Ceramic foam insulator with thermal expansion joint (2008-01-08),

10. 6977058 - Inoculant-strainer with improved filtration effectiveness and inoculant dissolution (2005-12-20),

11. 6913844 - Method for humidifying reactant gases for use in a fuel cell (2005-07-05),

12. 6773825 - Porous articles and method for the manufacture thereof (2004-08-10),

13. 6706239 - Method of co-forming metal foam articles and the articles formed by the method thereof (2004-03-16),

14. 6592787 - Porous articles and method for the manufacture thereof (2003-07-15),

15. 6235665 - Porous ceramic articles (2001-05-22),

Company Overview

Porvair Corporation specializes in the development and manufacturing of advanced materials and filtration solutions. With a focus on serving industries such as aerospace, environmental, and life sciences, the company leverages innovative technologies to create products that enhance performance and efficiency. Headquartered in Hendersonville, NC, Porvair is committed to delivering high-quality solutions that meet the evolving needs of its global clientele, emphasizing sustainability and reliability in its offerings.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

26 Patents

#1 in Hendersonville, NC

#297 in North Carolina

#12,875 in US

#24,848 in the World

Hendersonville, NC, United States of America

Porvair Corporation

Forward Citations = 557

32 inventors:

Leonard S Aubrey (8 out of 10 patents)

Kenneth R Butcher (4 out of 17 patents)

Rudolph A Olson, Iii (3 out of 7 patents)

4. Feng Chi (3 out of 3 patents)

5. David P Haack (3 out of 3 patents)

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

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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