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For the Inventor, By the Inventor

West Chester, PA, United States of America

Mei, Inc.

Calculating rank
USPTO Granted Patents = 79

% Expired Patents = 43.0


Trademarks = 24

Forward Citations = 314

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67 inventors (with patents filed for the assignee):

goldMedal Michael David Nunn (12 out of 27 patents)

silverMedal Christian Voser (11 out of 20 patents)

bronzeMedal Robert Clauser (9 out of 24 patents)

4.  Evan John Cost (9 out of 18 patents)

5.  Roberto Polidoro (8 out of 23 patents)

6.  Gaston Daniel Baudat (7 out of 13 patents)

7.  Kenneth B Wood (7 out of 8 patents)

8.  André Gerlier (7 out of 7 patents)

9.  David Charles Deaville (6 out of 23 patents)

10.  Fatiha Anouar (5 out of 10 patents)

11.  Scott Tice (5 out of 6 patents)

12.  Jeffrey T Thawley (5 out of 12 patents)

13.  Neil Young (4 out of 7 patents)

14.  John D Snider (4 out of 12 patents)

15.  David Michael Furneaux (4 out of 13 patents)


Core Competencies:
Currency Validation
Document Processing
Metal Etch System
Wafer Dryer
Optical Sensor
Coin Handling
Security Gate
Vending Machines
Currency Discrimination
Banknote Handling
Modular Security Gate
Document Storage

79 patents:

1. 10056271 - Metal etch system (2018-08-21),
2. 9829249 - Wafer dryer apparatus and method (2017-11-28),
3. 9562291 - Metal etch system (2017-02-07),
4. 9553005 - Metal liftoff tools and methods (2017-01-24),
5. 9279616 - Liquid coalescence and vacuum chamber dryer system and method (2016-03-08),
6. 9214501 - In-cell OLED touch display panel structure (2015-12-15),
7. 9070631 - Metal liftoff tools and methods (2015-06-30),
8. 9033338 - Stacking mechanisms and cassettes for documents (2015-05-19),
9. 8949643 - Document validator with power management (2015-02-03),
10. 8932118 - Batch re-load of coin recycler (2015-01-13),
11. 8875994 - Payment interface (2014-11-04),
12. 8864126 - Document storage assembly (2014-10-21),
13. 8851373 - Tracking information in a note handling facility (2014-10-07),
14. 8836926 - Optical detector arrangement for document acceptor (2014-09-16),
15. 8820507 - Currency discrimination and evaluation (2014-09-02),
Company Overview
Mei, Inc. is a leading innovator in currency handling technology, headquartered in West Chester, Pennsylvania. The company specializes in developing advanced solutions for currency validation, document processing, and coin handling, catering to various sectors including retail and vending. Their expertise extends to security systems, optical sensors, and metal etch systems, ensuring high standards of accuracy and security in financial transactions. Mei, Inc. is committed to enhancing operational efficiency through cutting-edge technology in the currency management landscape.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Nov 10 2026

Mei, Inc. USPTO Patent Assignee Logo
79 Patents

#2 in West Chester, PA

#178 in Pennsylvania

#4,704 in US

#9,591 in the World

West Chester, PA (US)
West Chester, PA, United States of America

Mei, Inc.

Forward Citations = 314

67 inventors:

goldMedal Michael David Nunn (12 out of 27 patents)

silverMedal Christian Voser (11 out of 20 patents)

bronzeMedal Robert Clauser (9 out of 24 patents)

4.  Evan John Cost (9 out of 18 patents)

5.  Roberto Polidoro (8 out of 23 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Mei, Inc.. Retrieved from https://idiyas.com/company/mei

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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