% Expired Patents = 37.5

Trademarks = 1

Forward Citations = 154

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8 inventors (with patents filed for the assignee):

Christopher W Ferrone (3 out of 3 patents)

Charles Sinkovits (3 out of 4 patents)

Michael A Dilich (3 out of 3 patents)

4. Ralph Lipsey Barnett (2 out of 29 patents)

5. Theordore Liber (1 out of 4 patents)

6. Steven R Schmid (1 out of 1 patent)

7. Robert Kaplan (1 out of 1 patent)

8. John M Goebelbecker (1 out of 1 patent)

8 patents: Sort by Forward Citations

1. 7427924 - System and method for monitoring driver fatigue (2008-09-23),

2. 7164350 - Back up alarm system (2007-01-16),

3. 7138923 - System and method for monitoring driver fatique (2006-11-21),

4. 6928855 - Zero speed indicating devices and processes for testing same (2005-08-16),

5. 5628033 - Accident investigation and reconstruction mapping with aerial photography (1997-05-06),

6. 4962942 - Minimum energy curb negotiating wheelchair (1990-10-16),

7. 4813305 - Safety mechanism for vertical closure (1989-03-21),

8. 4771505 - Force distribution bottom guard for vertically closing door (1988-09-20),

Company Overview

Triodyne Inc. is a leading engineering consulting firm specializing in forensic engineering, safety consulting, accident investigation, and expert witness testimony. With over 35 years of experience, Triodyne has a proven track record of providing expert engineering solutions to a wide range of industries including manufacturing, construction, transportation, and more. Our team of experienced engineers and scientists are dedicated to providing thorough and accurate analyses to help clients understand the root causes of accidents and prevent future incidents. Trust Triodyne for expert engineering consulting services.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

8 Patents

#31 in Northbrook, IL

#1,699 in Illinois

#35,924 in US

Northbrook, IL, United States of America

Triodyne Inc.

Forward Citations = 154

8 inventors:

Christopher W Ferrone (3 out of 3 patents)

Charles Sinkovits (3 out of 4 patents)

Michael A Dilich (3 out of 3 patents)

4. Ralph Lipsey Barnett (2 out of 29 patents)

5. Theordore Liber (1 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Triodyne Inc.. Retrieved from https://idiyas.com/company/triodyne

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

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]