For the Inventor, By the Inventor

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Plymouth, MI, United States of America

Avl North America, Inc.

Calculating rank

USPTO Granted Patents = 26

% Expired Patents = 42.3

EPO Patents = 2

Forward Citations = 166

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18 inventors (with patents filed for the assignee):

William Martin Silvis (15 out of 31 patents)

Norbert Kreft (13 out of 17 patents)

Gerald Marek (11 out of 14 patents)

4. James Patrick Williamson (5 out of 15 patents)

5. Wolfgang Schindler (4 out of 15 patents)

6. Nicholas Michael Zayan (3 out of 9 patents)

7. Ken Barnes (3 out of 4 patents)

8. Stephen R W Cooper (2 out of 25 patents)

9. Mark S Rauchfuss (2 out of 2 patents)

10. Joseph McDonald (1 out of 3 patents)

11. Peter Posch (1 out of 1 patent)

12. Wolfgang Kopecky (1 out of 1 patent)

13. Walter Orth (1 out of 1 patent)

14. Shahin Sabokdast Nudehi (1 out of 1 patent)

15. Juergen Neugebauer (1 out of 1 patent)

Core Competencies:

SCR Ammonia Slip Detection

Hybrid Powertrain

CVS System

Particulate Sampler

Exhaust Emissions

Acoustic Sensors

Dynamometer

Temperature Control

Dilution Tunnel

Misfire Detection

Flow Calibration

Pulsation Cancellation

26 patents: Sort by Forward Citations

1. 8607548 - SCR ammonia slip detection (2013-12-17),

2. 8186206 - Polymer base for hybrid powertrain and NVH test installations (2012-05-29),

3. 8181543 - CVS system sample water vapor management (2012-05-22),

4. 7610819 - Transmission headstock for test stands (2009-11-03),

5. 7607335 - Particulate sampler system flow calibration (2009-10-27),

6. 7574307 - Engine exhaust emissions measurement correction (2009-08-11),

7. 7565846 - Particulate sampler and dilution gas flow device arrangement for an exhaust sampling system (2009-07-28),

8. 7559262 - CVS system sample water vapor management (2009-07-14),

9. 7555928 - Exhaust volume measurement device (2009-07-07),

10. 7340940 - Particulate deposit avoidance and probe positioning (2008-03-11),

11. 7293454 - Anti-aliasing acoustic filter in the presence of pulsating flow (2007-11-13),

12. 7213449 - Flat track chassis dynamometer (2007-05-08),

13. 7191671 - Particulate deposit avoidance and probe positioning (2007-03-20),

14. 7141090 - Active filter temperature control (2006-11-28),

15. 7055364 - Exhaust volume measurement device (2006-06-06),

Company Overview

AVL North America, Inc. is a prominent player in the automotive engineering sector, specializing in advanced powertrain development and testing solutions. The company focuses on optimizing vehicle performance through innovative technologies in emissions testing, hybrid and electric vehicle systems, and simulation software. With its headquarters in Plymouth, MI, AVL serves a diverse clientele across North America, contributing to the evolution of sustainable mobility and enhancing vehicle efficiency through cutting-edge research and development.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

26 Patents

#14 in Plymouth, MI

#469 in Michigan

#12,875 in US

#24,848 in the World

Plymouth, MI, United States of America

Avl North America, Inc.

Forward Citations = 166

18 inventors:

William Martin Silvis (15 out of 31 patents)

Norbert Kreft (13 out of 17 patents)

Gerald Marek (11 out of 14 patents)

4. James Patrick Williamson (5 out of 15 patents)

5. Wolfgang Schindler (4 out of 15 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Avl North America, Inc.. Retrieved from https://idiyas.com/company/avl-north-america

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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