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For the Inventor, By the Inventor

West Greenwich, RI, United States of America

Gtech Corporation


USPTO Granted Patents = 52

% Expired Patents = 13.5



Trademarks = 4

Forward Citations = 3,956

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60 inventors (with patents filed for the assignee):

goldMedal Scott D Hultzman (9 out of 14 patents)

silverMedal Brian J Roberts (7 out of 19 patents)

bronzeMedal David B Petch (5 out of 41 patents)

4.  Frank J Metayer (4 out of 6 patents)

5.  Curtis Woods (4 out of 22 patents)

6.  George Voutes (4 out of 4 patents)

7.  Henry J Constant, Jr (3 out of 3 patents)

8.  David G Wagoner (3 out of 6 patents)

9.  Clifton C Dutton (3 out of 4 patents)

10.  Thomas K Oram (2 out of 13 patents)

11.  Joseph G Spanedda (2 out of 7 patents)

12.  Thomas J Napolitano (2 out of 8 patents)

13.  Alexis J Cournoyer (2 out of 2 patents)

14.  Carlos Cervantes Toral (2 out of 2 patents)

15.  William E Engelhardt, Jr (2 out of 5 patents)


Core Competencies:
Wagering Systems
Lottery Ticket Dispenser
Document Recognition
Gaming Terminal
Optical Reader
Predictive Diagnostics
Vending Machine
Image Processing
Smartcards
Game of Chance
Data Scanning
Fault Management

52 patents:

1. 11627795 - Shoulder transfer weight support system and face shield (2023-04-18),
2. 11432759 - Method for diagnosis and treatment of disorders of the gastrointestinal tract, and apparatus for use therewith (2022-09-06),
3. 8708795 - Method and system for facilitating extended play of a wagering game (2014-04-29),
4. 8538170 - System and method for document location and recognition (2013-09-17),
5. 8534524 - Perforated ticket dispensing machine (2013-09-17),
6. 8480470 - System and method for facilitating the operation of a combined lottery/raffle game (2013-07-09),
7. 8396301 - System and method for document location and recognition (2013-03-12),
8. 8333653 - System, device and method for paperless wagering and payment of winnings (2012-12-18),
9. 8295579 - Obstruction detector (2012-10-23),
10. 8233200 - Curvature correction and image processing (2012-07-31),
11. 8135648 - Authentication of lottery tickets, game machine credit vouchers, and other items (2012-03-13),
12. 8109442 - Optical reader quality factor (2012-02-07),
13. 8109440 - System and method for calibrating an optical reader system (2012-02-07),
14. 8103550 - Fault tolerant lottery communications network, device, system and method (2012-01-24),
15. 8072651 - System and process for simultaneously reading multiple forms (2011-12-06),
Gtech Corporation, headquartered in West Greenwich, RI, specializes in gaming technology, focusing on innovative solutions for the gaming and lottery industries. The company develops advanced wagering systems, lottery ticket dispensers, and gaming terminals, integrating cutting-edge technologies such as document recognition and image processing. Gtech's expertise extends to predictive diagnostics and optical readers, enhancing the efficiency and reliability of gaming operations. With a commitment to innovation, Gtech plays a pivotal role in shaping the future of gaming technology.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Gtech Corporation
52 Patents

#1 in West Greenwich, RI

#30 in Rhode Island

#6,757 in US

#13,537 in the World

West Greenwich, RI (US)
West Greenwich, RI, United States of America

Gtech Corporation

Forward Citations = 3,956

60 inventors:

goldMedal Scott D Hultzman (9 out of 14 patents)

silverMedal Brian J Roberts (7 out of 19 patents)

bronzeMedal David B Petch (5 out of 41 patents)

4.  Frank J Metayer (4 out of 6 patents)

5.  Curtis Woods (4 out of 22 patents)

Please report any incorrect information to [email protected]
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