Pekin, IL, United States of America

Howard A Marsden

This inventor holds 14 USPTO granted patents, primarily in Hydraulic Control Systems. Top assignees: Caterpillar Inc., Caterpillar Tractor Co.. Active years: 1976-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Howard A Marsden. Retrieved from https://idiyas.com/inventor/howard-a-marsden

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 = 3.1

ph-index = 11

Forward Citations = 240(Granted Patents)


Company Filing History:


Years Active: 1976-1994

Loading Chart...
Areas of Expertise:
Cruise Control
Hydraulic Control
Redundant Control
Power Output Limitation
Steering Arrangement
High Pressure Systems
Work Vehicle Integration
Attitude Control
Front Wheel Drive
Track-Type Vehicles
Hydraulic Motors
Hydraulic Jacks
14 patents (USPTO):Explore Patents

Title: The Innovative Mind of Howard A. Marsden: Pioneering Hydraulic Control Technologies

Introduction: Howard A. Marsden, an accomplished inventor based in Pekin, IL, has made significant contributions to the field of hydraulic systems, holding a remarkable total of 14 patents. His inventive spirit and technical expertise have led to the development of cutting-edge technologies that enhance vehicle performance and control.

Latest Patents: Among Howard A. Marsden's latest inventions are two notable patents: the Cruise Control for Hydraulically Driven Vehicle and Hydraulic Control Apparatus. The Cruise Control patent describes an apparatus designed for vehicles utilizing hydraulic drive motors, enabling precise control over speed and direction. It features customizable control members that allow for personalized speed settings, enhancing the driving experience. Meanwhile, the Hydraulic Control Apparatus offers a sophisticated solution for actuating hydraulic devices, by providing stable pressurized fluid flow based on operational signals. These innovations demonstrate Marsden’s commitment to improving hydraulic technologies.

Career Highlights: Marsden's career is marked by his tenure at leading companies including Caterpillar Inc. and Caterpillar Tractor Co., where he honed his skills and applied his inventive talents. His work has not only contributed to the success of these organizations but has also furthered advancements in hydraulic machinery across various applications.

Collaborations: Throughout his career, Howard A. Marsden has had the privilege of collaborating with talented individuals such as Willard J. Haak and Lonnie J. Devier. These partnerships have fostered a creative exchange of ideas and have played a critical role in the innovative processes that led to Marsden’s successful inventions.

Conclusion: Howard A. Marsden's contributions to hydraulic technology underscore his status as a prominent inventor. With a strong foundation in industry experience and a knack for innovation, he continues to influence the field significantly. His dedication to developing practical solutions exemplifies the impact that innovative thinkers can have on engineering and design.

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]
Loading…