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For the Inventor, By the Inventor

Tukwila, WA, United States of America

Gt Development Corporation


USPTO Granted Patents = 34

% Expired Patents = 2.9

Trademarks = 1

Forward Citations = 1,952

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16 inventors (with patents filed for the assignee):

goldMedal John Michael Morris (23 out of 38 patents)

silverMedal Alan K Forsythe (15 out of 20 patents)

bronzeMedal Charles J Green (11 out of 15 patents)

4.  Zdenek Gabrlik (6 out of 6 patents)

5.  Charles E Stephens (2 out of 10 patents)

6.  Charles H Simmons, Jr (2 out of 2 patents)

7.  Andrew F Thompson (2 out of 2 patents)

8.  Timothy L Oliphant (2 out of 4 patents)

9.  Denny Gabrlik (2 out of 2 patents)

10.  Gabe Fasolino (1 out of 2 patents)

11.  Brent L LaRiviere (1 out of 1 patent)

12.  Scott F Coomes (1 out of 1 patent)

13.  Roger St John (1 out of 1 patent)

14.  Kurt Ambruster (1 out of 1 patent)

15.  Nelson O Phillips (1 out of 1 patent)


Core Competencies:
Knob Attachment Assembly
Deformable Fastener
Magnetic Reed Switches
Solenoid-Actuated Valve
Pressure Protection Valve
Air-Operated Devices
HVAC Fluid Control
Vapor Recovery Systems
Flow Divider
Pneumatic Seat Valve
Vehicle Safety Vent
Gas Venting Valve

34 patents:

1. 7380309 - Knob attachment assembly (2008-06-03),
2. 7210669 - Deformable fastener (2007-05-01),
3. 7164335 - Switch assembly employing magnetic reed switches (2007-01-16),
4. 7106158 - Solenoid-actuated air valve (2006-09-12),
5. 6971404 - Pressure protection valve (2005-12-06),
6. 6860292 - Control system for air-operated devices (2005-03-01),
7. 6719000 - Two stage fuel tank vent valve (2004-04-13),
8. 6175290 - Contactless stalk mounted control switch (2001-01-16),
9. 6119727 - Pneumatic seat valve having a rapid exhaust mode (2000-09-19),
10. 6085786 - Cyclic flow valve (2000-07-11),
11. 5590736 - Vehicle pneumatic seat rollover safety vent valve (1997-01-07),
12. 5573034 - Center position biased slide air valve (1996-11-12),
13. 5564520 - Pneumatic seat rollover vent valve (1996-10-15),
14. 5467960 - Two-way HVAC fluid control valve (1995-11-21),
15. 5447178 - Center position biased slide air valve (1995-09-05),
Gt Development Corporation, based in Tukwila, WA, specializes in advanced technology solutions and product development across various sectors. The company focuses on innovative engineering and design, providing services that enhance operational efficiency and product performance. With a commitment to research and development, Gt Development engages in cutting-edge projects that span multiple domains, including aerospace, automotive, and industrial applications, positioning itself as a key player in the technology landscape.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Gt Development Corporation
34 Patents

#1 in Tukwila, WA

#213 in Washington

#9,991 in US

#19,594 in the World

Tukwila, WA (US)
Tukwila, WA, United States of America

Gt Development Corporation

Forward Citations = 1,952

16 inventors:

goldMedal John Michael Morris (23 out of 38 patents)

silverMedal Alan K Forsythe (15 out of 20 patents)

bronzeMedal Charles J Green (11 out of 15 patents)

4.  Zdenek Gabrlik (6 out of 6 patents)

5.  Charles E Stephens (2 out of 10 patents)

Please report any incorrect information to [email protected]
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