Forward Citations = 126

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1 inventor (with patents filed for the assignee):

Frank R Kinnan (9 out of 21 patents)

9 patents: Sort by Forward Citations

1. 5111891 - Boring head for a subsurface soil-boring apparatus (1992-05-12),

2. 5054565 - Steering mechanism for a subsoil boring apparatus (1991-10-08),

3. 4957173 - Method and apparatus for subsoil drilling (1990-09-18),

4. 4955439 - Self-propelled subsoil penetrating tool system (1990-09-11),

5. 4923134 - Self-propelled subsoil penetrating tool system (1990-05-08),

6. 4905773 - Self-propelled subsoil penetrating tool system (1990-03-06),

7. 4866214 - Service cable for a subsoil penetrating tool and method of preventing (1989-09-12),

8. 4858703 - Self-propelled subsoil penetrating tool system (1989-08-22),

9. 4842207 - Device for detecting and measuring the tension on a cable (1989-06-27),

Company Overview

Underground Technologies, Inc. is a leading provider of innovative solutions for underground utility locating and mapping. Our cutting-edge technology helps businesses and municipalities efficiently identify, mark, and map underground infrastructure to prevent costly accidents and improve project planning. With over 20 years of industry experience, we pride ourselves on delivering high-quality, reliable solutions to our customers.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

9 Patents

#1 in Byron, CA

#7,735 in California

#32,588 in US

Byron, CA, United States of America

Underground Technologies, Inc.

Forward Citations = 126

1 inventor:

Frank R Kinnan (9 out of 21 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Underground Technologies, Inc.. Retrieved from https://idiyas.com/company/underground-technologies

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]