Denver, CO, United States of America

Donald Hugh Stedman

This inventor holds 31 USPTO granted patents and 2 published patent applications and 4 EPO patents, primarily in Vehicle Emissions Monitoring. Top assignees: Environmental Systems Products Holdings Inc., Envirotest Systems Holdings Corp., Colorado Seminary. Active years: 1987-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Donald Hugh Stedman. Retrieved from https://idiyas.com/inventor/donald-hugh-stedman

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

USPTO Granted Patents = 31 

% Patents Active = 67.7

 

Average Co-Inventor Count = 1.9

ph-index = 13

Forward Citations = 621(Granted Patents)


Location History:

  • Englewood, CO (US) (1987 - 1997)
  • Denver, CO (US) (1994 - 2015)

Company Filing History:


Years Active: 1987-2015

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Areas of Expertise:
Remote Emissions Sensing
Exhaust Analysis
Sulfur Detection
Vehicle Emissions
Spectral Matching
Opacity Measurement
Gas Analyzer
Hydrocarbon Differentiation
Calibration Instruments
Nitrogen-Containing Gases
Liquid Separator
31 patents (USPTO):Explore Patents

Title: Innovator Spotlight: Donald Hugh Stedman

Introduction

Donald Hugh Stedman, a prolific inventor based in Denver, CO, has made significant contributions in the field of emissions measurement and analysis. With a remarkable track record of 23 patents to his name, Stedman's innovative solutions have revolutionized the assessment of components in vehicle exhaust, particularly for commercial and heavy-duty vehicles.

Latest Patents

Among his latest patents is the groundbreaking "System and Method for Quantifying the Presence of Components in the Exhaust of Commercial and/or Heavy-Duty Vehicles." This invention introduces a non-contact, sampling system that accurately measures the presence of various components in exhaust emissions under real-world operating conditions. Additionally, Stedman's "Remote Vehicle Emissions Sensing System and Method for Differentiating Water from Hydrocarbons" offers a novel approach to detecting water droplets in exhaust gas through remote emissions sensing systems, without the need for additional specialized equipment.

Career Highlights

Stedman's exemplary career includes notable stints at Environmental Systems Products Holdings Inc. and Envirotest Systems Holdings Corp., where he further honed his expertise in emissions analysis and environmental technology. His extensive experience in the industry has solidified his reputation as a leading figure in emissions measurement and control.

Collaborations

Throughout his career, Stedman has collaborated with esteemed professionals in the field, including coworkers Gary Allen Bishop and Gary G Full. These collaborations have led to the development of cutting-edge technologies and solutions that have had a lasting impact on the environmental sector.

Conclusion

In conclusion, Donald Hugh Stedman's innovative spirit and dedication to advancing emissions measurement techniques have positioned him as a trailblazer in the field. His pioneering patents and collaborative efforts underscore his commitment to driving impactful change in environmental technology, making him a standout inventor in the realm of emissions analysis.

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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