Jackson, TN, United States of America

Harlan J Trefz

This inventor holds 2 USPTO granted patents. Top assignee: Noma Outdoor Products Inc.. Active years: 1990-1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Harlan J Trefz. Retrieved from https://idiyas.com/inventor/harlan-j-trefz

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 = 2.0

ph-index = 2

Forward Citations = 33(Granted Patents)


Location History:

  • Polk City, IA (US) (1990)
  • Jackson, TN (US) (1991)

Company Filing History:


Years Active: 1990-1991

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2 patents (USPTO):Explore Patents

Title: Harlan J Trefz: Innovator in Vehicle Steering Technology

Introduction

Harlan J Trefz is a notable inventor based in Jackson, TN, who has made significant contributions to the field of vehicle technology. With a total of two patents to his name, Trefz has focused on innovations that enhance vehicle maneuverability and efficiency.

Latest Patents

Among his latest patents is the "Four-wheel steering vehicle apparatus." This invention features a four-wheel steering system that includes assemblies for steering both the front and rear wheels of a vehicle. An interconnecting member links these steering assemblies, allowing them to move in relation to one another. This design introduces a dwell period between the movements of the front and rear steering assemblies, which is controlled by the vehicle's driver. The second patent is for a "Lawn mower body," showcasing Trefz's versatility in engineering.

Career Highlights

Harlan J Trefz is currently associated with Noma Outdoor Products Inc., where he continues to innovate and develop new technologies. His work has contributed to advancements in outdoor equipment and vehicle design.

Collaborations

Trefz has collaborated with notable coworkers, including John N Lesikar and John R Durfee, who have also contributed to the field of engineering and product development.

Conclusion

Harlan J Trefz stands out as an inventor whose work in vehicle steering technology and outdoor products reflects his commitment to innovation. His patents demonstrate a blend of creativity and practicality that continues to influence the industry.

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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