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For the Inventor, By the Inventor

Ephrata, PA, United States of America

Garth Harvey Bulgrien

This inventor holds 53 USPTO granted patents and 4 published patent applications and 15 EPO patents, primarily in Transmission Control (CPC class F16H). Top assignees: Cnh Industrial America LLC, Ford New Holland, Inc., Cnh America LLC. Active years: 1991-2023.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Garth Harvey Bulgrien. Retrieved from https://idiyas.com/inventor/garth-harvey-bulgrien

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 53 

% Patents Active = 98.1

 

Average Co-Inventor Count = 1.6

ph-index = 13

Forward Citations = 420(Granted Patents)

Forward Citations (Not Self Cited) = 388(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Ephratra, PA (US) (1991)
  • Ephrata, PA (US) (1991 - 2023)

Company Filing History:

goldMedal28 out of 3,074 
 
Cnh Industrial America LLC
 patents
silverMedal14 out of 251 
 
Ford New Holland, Inc.
 patents
bronzeMedal6 out of 969 
 
Cnh America LLC
 patents
4. 5 out of 361 
 
New Holland North America, Inc.
 patents
5. 1 out of 8,942 
 
Deere & Company
 patents
where one patent can have more than one assignee

Years Active: 1991-2023

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Areas of Expertise:
Dual-Clutch Transmissions
Transmission Control
Power Shift Management
Continuously Variable Transmission
Clutch Engagement
Torque Estimation
Engine Speed Control
Work Vehicle Systems
Shuttle Shifting
Hydraulic Control
Driveline Torque
Automotive Productivity
53 patents (USPTO):Explore Patents
1. 11739814 - Relating to dual-clutch transmissions (2023-08-29),
2. 11592104 - Method of transmission control in order to protect clutches from damage (2023-02-28),
3. 11112005 - Transmission system for a work vehicle (2021-09-07),
4. 10927926 - Systems and methods for a transmission having a multi-speed range section (2021-02-23),
5. 10823287 - System and method for determining and controlling engine speeds during gear shifting (2020-11-03),
6. 10816046 - Clutch control for shared power dissipation (2020-10-27),
7. 10451124 - Clutch control system for a work vehicle (2019-10-22),
8. 10393230 - Transmission system for a work vehicle (2019-08-27),
9. 10336311 - System and method for controlling the speed of a work vehicle during downhill operation (2019-07-02),
10. 10227942 - System and method for controlling a powershift transmission (2019-03-12),
11. 10196066 - Automotive productivity manager for power shift transmissions (2019-02-05),
12. 10047807 - Clutch control for vehicle transmission (2018-08-14),
13. 9856967 - Torque estimation for work machine power train (2018-01-02),
14. 9702417 - Method of calibration of a hydraulically operated clutch of a continuously variable transmission using pressure between a hydrostatic pump and motor (2017-07-11),
15. 9556954 - System and method for performing shuttle shifts with a transmission of a work vehicle (2017-01-31),

Title: Garth Harvey Bulgrien: Innovator in Dual-Clutch Transmissions

Introduction

Garth Harvey Bulgrien is a renowned inventor based in Ephrata, PA, who has made significant contributions to the field of automotive technology. With an impressive portfolio of 53 patents, Bulgrien's innovations predominantly focus on enhancing transmission systems, particularly dual-clutch transmissions.

Latest Patents

Garth Harvey Bulgrien's latest patents include groundbreaking designs for dual-clutch transmissions. One such innovation describes a dual-clutch transmission that features an odd gears clutch and an odd gears shaft supporting multiple odd-numbered rotary gears alongside an even gears clutch and shaft. This system allows for selective connection of a driven rotary shaft to either odd or even numbered gears, facilitating smooth power transfer through first and second range selection gears, thereby enabling the selection of varying transmission ratios. Additionally, he developed a method for transmission control aimed at protecting clutches from damage. This system incorporates a driveline featuring a control system that monitors engine speed, allowing for automatic shifting to optimize performance and protect the integrity of the transmission during operation.

Career Highlights

Throughout his career, Garth Harvey Bulgrien has worked with notable companies such as CNH Industrial America LLC and Ford New Holland, Inc. His experience in these leading automotive firms has profoundly influenced his inventive capabilities, allowing him to hone his skills in transmission technology.

Collaborations

Bulgrien has collaborated with several talented individuals, including coworkers Peter John Dix and Brian Allen Hartman. These professional relationships have fostered an environment of innovation and creativity, contributing to the development of advanced transmission systems and technologies.

Conclusion

Garth Harvey Bulgrien stands out as an influential figure in automotive innovation. His extensive patent portfolio and collaborative projects with esteemed companies and talented colleagues underline his expertise and commitment to advancing dual-clutch transmission technologies. As the automotive industry continues to evolve, Bulgrien's contributions will likely play a pivotal role in shaping the future of vehicle transmission systems.

Profile summary based on public USPTO records.
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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