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For the Inventor, By the Inventor

Louisville, KY, United States of America

Aaf-Mcquay Inc.


USPTO Granted Patents = 53

% Expired Patents = 26.4



Trademarks = 41

Forward Citations = 462

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37 inventors (with patents filed for the assignee):

goldMedal Kyung-Ju Choi (20 out of 46 patents)

silverMedal Keiron O'Connell (8 out of 8 patents)

bronzeMedal Ng Cheah Wei (6 out of 6 patents)

4.  Michael W Osborne (5 out of 10 patents)

5.  Mohammad Usman Rafi (5 out of 6 patents)

6.  Mike Osborne (4 out of 4 patents)

7.  Husheder P Daruwalla (4 out of 4 patents)

8.  Joachim Horst Wenzek (4 out of 4 patents)

9.  Dennis R Porter (4 out of 7 patents)

10.  John Michael Roll (3 out of 5 patents)

11.  Lewis Sanders (3 out of 4 patents)

12.  Christopher Erbe (3 out of 4 patents)

13.  M Aflal Rahmathullah (3 out of 4 patents)

14.  Cheah Wei Ng (3 out of 3 patents)

15.  Terence William Thomas Young (2 out of 6 patents)


Core Competencies:
Filtration Media
Air Quality Detection
Fiberglass Mat
Multi-Stage Filtering
Gas Turbine Filter
Thermobondable Medium
Filter Cassette
Pleated Filter Material
Contamination Removal
Air Handling Equipment
Nanofiber Media
Screw Compressor

53 patents:

1. 8834591 - Filter structure for removing contaminants from stream of fluid (2014-09-16),
2. 8702408 - Slide for use in a screw compressor (2014-04-22),
3. 8546298 - Filtration media having a chemical reagent (2013-10-01),
4. 8409337 - Air handling filtration equipment with adjustable media bed and method of use (2013-04-02),
5. 8404023 - Air handling filtration equipment with adjustable media bed and method of use (2013-03-26),
6. 8393180 - Method of manufacturing a fiberglass mat (2013-03-12),
7. 8277732 - Air quality detection pack (2012-10-02),
8. 8216413 - Method of making a marine gas turbine filter (2012-07-10),
9. 8210488 - Base/lifting structure (2012-07-03),
10. 8197571 - Air filter with improved structural support (2012-06-12),
11. 8177155 - Apparatus and method for compressing and winding overlapped fibrous blankets (2012-05-15),
12. 8152889 - Filter with EPTFE and method of forming (2012-04-10),
13. 8101002 - Front access frame sealing mechanism for filter cassettes (2012-01-24),
14. D652498 - Air filter (2012-01-17),
15. D652130 - Air filter (2012-01-10),
Company Overview
Aaf-Mcquay Inc., based in Louisville, KY, specializes in advanced filtration technology, focusing on enhancing air quality and efficiency in various applications. The company develops a range of filtration media, including fiberglass mats and pleated filter materials, designed for multi-stage filtering systems. Their innovations extend to gas turbine filters and thermobondable mediums, ensuring optimal performance in demanding environments. Aaf-Mcquay's commitment to quality and innovation positions it as a leader in the filtration industry.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

Aaf-Mcquay Inc. USPTO Patent Assignee Logo
53 Patents

#14 in Louisville, KY

#29 in Kentucky

#6,664 in US

#13,323 in the World

Louisville, KY (US)
Louisville, KY, United States of America

Aaf-Mcquay Inc.

Forward Citations = 462

37 inventors:

goldMedal Kyung-Ju Choi (20 out of 46 patents)

silverMedal Keiron O'Connell (8 out of 8 patents)

bronzeMedal Ng Cheah Wei (6 out of 6 patents)

4.  Michael W Osborne (5 out of 10 patents)

5.  Mohammad Usman Rafi (5 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Aaf-Mcquay Inc.. Retrieved from https://idiyas.com/company/aaf-mcquay

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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