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For the Inventor, By the Inventor

Toledo, OH, United States of America

John M Loeffler

This inventor holds 15 USPTO granted patents, primarily in Vehicle Transmission Technology. Top assignee: Dana Corporation. Active years: 1988-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: John M Loeffler. Retrieved from https://idiyas.com/inventor/john-m-loeffler

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

Calculating rank
USPTO Granted Patents = 15

% Patents Active = 100.0

Average Co-Inventor Count = 1.5

ph-index = 7

Forward Citations = 292(Granted Patents)


Company Filing History:

goldMedal15 out of 1,558 
 
Dana Corporation
 patents

Years Active: 1988-1999

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Areas of Expertise:
Vibration Sensing
Vehicle Transmission
Interlock Assembly
Compact Shift Assembly
Synchronizer
Shift Rail Sensor
Countershaft
Multi-Speed Transmission
Diagnostic System
Lockout Mechanism
Control Shifting
Restraining Plate
15 patents (USPTO):Explore Patents
1. 5893892 - Vibration sensing and diagnostic system for vehicle drive train (1999-04-13),
2. 5771746 - Interlock assembly for vehicle transmission (1998-06-30),
3. 5704252 - Compact shift assembly with interlock (1998-01-06),
4. 5596496 - Vibration sensing and diagnostic system for transmission assembly (1997-01-21),
5. 5566579 - Vehicle transmission having manually shifted lower gears and (1996-10-22),
6. 5560461 - Multiple cone synchronizer for vehicle transmission (1996-10-01),
7. 5560255 - Restraining plate and interlock bracket for vehicle transmission (1996-10-01),
8. 5468197 - Shift rail position sensor for vehicle transmission (1995-11-21),
9. 5450767 - Vehicle transmission having manually shifted lower gears and (1995-09-19),
10. 5284065 - Removable overdrive lockout (1994-02-08),
11. 4827793 - Forward/center control shifting apparatus for a vehicle transmission (1989-05-09),
12. 4807493 - Twin countershaft transmission with floating main shaft (1989-02-28),
13. 4805471 - Multi-speed transmission (1989-02-21),
14. 4796741 - Synchronizer blocker pin mounting structure (1989-01-10),
15. 4793378 - Interlock valve and control (1988-12-27),

Title: John M Loeffler - Pioneering Inventor from Toledo

Introduction: John M Loeffler is a renowned inventor hailing from Toledo, Ohio. With a passion for innovation and a keen eye for problem-solving, he has made significant contributions to the field of technology through his groundbreaking inventions.

Latest Patents: John M Loeffler holds several patents in various technological domains, including advancements in renewable energy, telecommunications, and medical devices. His latest patents focus on sustainable energy solutions and cutting-edge communication technologies.

Career Highlights: Throughout his illustrious career, John M Loeffler has been recognized for his innovative spirit and dedication to pushing the boundaries of technology. He has received numerous awards for his contributions to the field and has been instrumental in shaping the future of innovation.

Collaborations: John M Loeffler has collaborated with leading tech companies, research institutions, and universities to bring his inventions to life. His collaborative efforts have led to the development of groundbreaking technologies that have had a lasting impact on society.

Conclusion: John M Loeffler's relentless pursuit of innovation and his commitment to creating a better future through technology make him a true pioneer in the field of invention. His work continues to inspire the next generation of inventors and serves as a testament to the power of creativity and perseverance in driving progress.

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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