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For the Inventor, By the Inventor

West Bloomfield, MI, United States of America

Jy-Jen F Sah

This inventor holds 97 USPTO granted patents and 1 published patent application and 24 EPO patents, primarily in Hybrid Powertrain Control (CPC class B60W2710-083). Top assignees: Gm Global Technolgoy Operations, Inc., Daimler Ag, Bayerische Motoren Werke Aktiengesellschaft. Active years: 2006-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Jy-Jen F Sah. Retrieved from https://idiyas.com/inventor/jy-jen-f-sah

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

Calculating rank
USPTO Granted Patents = 97 

% Patents Active = 42.3

 

Average Co-Inventor Count = 2.5

ph-index = 14

Forward Citations = 690(Granted Patents)

Forward Citations (Not Self Cited) = 610(Dec 10, 2025)


Inventors with similar research interests:

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Location History:

  • West Bloomfield, MI (US) (2006 - 2016)
  • Warren, MI (US) (2019)

Company Filing History:

goldMedal97 out of 31,987 
 
Gm Global Technolgoy Operations, Inc.
 patents
silverMedal27 out of 2,048 
 
Daimler Ag
 patents
bronzeMedal26 out of 6,563 
 
Bayerische Motoren Werke Aktiengesellschaft
 patents
4. 18 out of 488 
 
Chrysler Group LLC
 patents
5. 9 out of 1,986 
 
Chrysler Corporation
 patents
6. 1 out of 145 
 
B Ayerische M Otoren W Erke a Ktiengesellschaft
 patents
7. 1 out of 271 
 
Electronic Data Systems Corporation
 patents
where one patent can have more than one assignee

Years Active: 2006-2019

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Areas of Expertise:
Powertrain System
Torque Estimation
Clutch Control
Hydraulic Pressure
Transmission Control
Engine Stability
Fluid Pressure
Hybrid Vehicle
Electric Pump
Driveline Control
Mode Transition
Noise Control
97 patents (USPTO):Explore Patents
1. 10501068 - Method and apparatus for controlling a multi-mode powertrain system (2019-12-10),
2. 9352741 - Method and apparatus for controlling creep torque in a powertrain system (2016-05-31),
3. 9140337 - Method for model based clutch control and torque estimation (2015-09-22),
4. 9097337 - Method and apparatus to control hydraulic line pressure in an electro-mechanical transmission (2015-08-04),
5. 9097294 - Control of clutch fill command based on hydraulic state of oncoming clutch (2015-08-04),
6. 9022165 - Vehicle lubrication flow control (2015-05-05),
7. 9014934 - Method for controlling pump transitions in a multi-mode hybrid transmission (2015-04-21),
8. 9008926 - Control of engine torque during upshift and downshift torque phase for a hybrid powertrain system (2015-04-14),
9. 9005076 - Method and apparatus for controlling a shift in a multi-mode powertrain system (2015-04-14),
10. 8989930 - Method and apparatus for controlling an engine disconnect clutch in a powertrain system (2015-03-24),
11. 8888639 - Method for providing a controlled neutral in lieu of a conventional neutral in an electro-mechanical transmission (2014-11-18),
12. 8825320 - Method and apparatus for developing a deceleration-based synchronous shift schedule (2014-09-02),
13. 8801567 - Method and apparatus for executing an asynchronous clutch-to-clutch shift in a hybrid transmission (2014-08-12),
14. 8751078 - Off-going clutch control (2014-06-10),
15. 8733481 - Method for starting an engine of a hybrid powertrain (2014-05-27),

Title: Innovations by Jy-Jen F. Sah: A Leader in Powertrain Technologies

Introduction

Jy-Jen F. Sah, based in West Bloomfield, MI, is a distinguished inventor with an impressive portfolio of 97 patents. His work primarily focuses on advancements in powertrain systems, showcasing his commitment to innovation and technological development in the automotive industry.

Latest Patents

One of Sah's latest patents includes a comprehensive method and apparatus for controlling a multi-mode powertrain system. This invention involves responding to commands for executing multi-state shift events in transmissions, determining initial torque limits, and adjusting torque in real-time during shift transitions. Another notable patent addresses creep torque control in a powertrain system, where it manages motor torque from a torque machine to ensure operations occur outside undesirable performance regions while maintaining effective mechanical braking.

Career Highlights

Throughout his career, Jy-Jen F. Sah has made significant contributions while working for esteemed companies such as General Motors Global Technology Operations LLC and Daimler AG. His innovations have played a pivotal role in enhancing vehicle performance and efficiency, reflecting his expertise in automotive technologies.

Collaborations

Sah has collaborated with notable colleagues, including Lawrence A. Kaminsky and Anthony H. Heap, who have further advanced his research and technological developments. Their partnerships have facilitated the growth of innovative solutions within the industry, fostering an environment that encourages collective advancement.

Conclusion

In conclusion, Jy-Jen F. Sah stands out as a luminary in the field of powertrain innovations. With a robust patent portfolio and a commitment to enhancing automotive technologies, his work continues to influence the industry positively. His collaborative efforts and dedication to invention solidify his position as a key contributor to the ongoing evolution of vehicle engineering.

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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