Burbank, CA, United States of America

John Hobart Zentmyer

This inventor holds 14 USPTO granted patents, primarily in Automotive Differentials. Top assignees: Torq-Masters Industries, Inc, Vehicle Technologies, Inc., Vehicular Technologies, Inc.. Active years: 1978-2020.

IDiyas Innovation Intelligence. (2026). Inventor Profile: John Hobart Zentmyer. Retrieved from https://idiyas.com/inventor/john-hobart-zentmyer

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 1.2

ph-index = 9

Forward Citations = 420(Granted Patents)


Location History:

  • Burbank, CA (US) (1978)
  • Toluca Lake, CA (US) (1995)
  • Taluca Lake, CA (US) (1997 - 1998)
  • Costa Mesa, CA (US) (1997 - 2001)
  • Lakeside, CA (US) (2018 - 2020)

Company Filing History:


Years Active: 1978-2020

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Areas of Expertise:
Automatic Locking Differential
Axle Coupler
Differential Replacement Device
Axle Gear
Full Locking Differential
Electromagnetic Ring Actuator
Locking Differential Actuator
Radial Dampening
Automotive Vehicle Differential
Night Stick Structure
Electrical Flash-Tube
14 patents (USPTO):Explore Patents

Title: The Innovator Behind Advanced Axle Technology: John Hobart Zentmyer

Introduction: John Hobart Zentmyer is an accomplished inventor based in Burbank, California, who has made significant contributions to technology with a total of 14 patents to his name. His innovations primarily focus on automotive engineering, showcasing his expertise and foresight in this dynamic field.

Latest Patents: Among his latest patents are groundbreaking designs like the Automatic Locking Differential and an Axle Coupler with Ring Recess. The axle coupler features a sophisticated design that includes driver teeth to engage with corresponding driver teeth, a central aperture complete with axle teeth that surround the central axis, and uniquely shaped axle teeth for enhanced performance. This innovative design adds complexity and functionality, improving the effectiveness of axle couplings in various automotive applications.

Career Highlights: Throughout his career, John has worked with several notable companies, one of which is Torq-Masters Industries, Inc., where he has played a crucial role in developing advanced automotive technologies. His inventive spirit and problem-solving skills have allowed him to make notable advancements in the engineering sector.

Collaborations: John Hobart Zentmyer has collaborated with talented individuals such as Mark V Tyson and Cora Jokinen, both of whom have contributed significantly to the projects that enhanced his innovations. Their teamwork and shared expertise have propelled many of John's ideas into practical applications.

Conclusion: The work of John Hobart Zentmyer highlights the essential role of inventors in driving innovation within the automotive industry. His patents not only showcase his dedication to advancement but also serve as a testament to the impact that skilled inventors can have on technology and engineering. As he continues to develop inventive solutions, John remains a prominent figure in his field, inspiring future generations of engineers and inventors.

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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