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For the Inventor, By the Inventor

Kent, WA, United States of America

Utilx Corporation


USPTO Granted Patents = 30

% Expired Patents = 20.0



Trademarks = 1

Forward Citations = 703

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14 inventors (with patents filed for the assignee):

goldMedal William R Stagi (17 out of 18 patents)

silverMedal James R Steele (12 out of 63 patents)

bronzeMedal Glen John Bertini (11 out of 59 patents)

4.  Keith Lanan (7 out of 7 patents)

5.  Glenn S Jessen (5 out of 5 patents)

6.  Nelson Hall (4 out of 5 patents)

7.  Kim Jenkins (3 out of 3 patents)

8.  Albert W Chau (2 out of 179 patents)

9.  Gerald S Solomon (2 out of 2 patents)

10.  Oscar E Morel (1 out of 1 patent)

11.  Wen Shu (1 out of 1 patent)

12.  Alexander Babchanik (1 out of 1 patent)

13.  Jorge Albe (1 out of 1 patent)

14.  Wayne J Chatterton (1 out of 4 patents)

15.  James A Steele (1 patent)


Core Competencies:
Time Domain Reflectometry
Partial Discharge
Cable Splice
Cable Termination
Corrosion Inhibition
Fluid Reservoir
Check Valve
Distributed Cable Feed
Electronic Guidance
Wire Rope Lubrication
Cable Connections
Flow-Through Cable

30 patents:

1. 9210257 - Systems and methods employing time domain reflectometry (2015-12-08),
2. 9110105 - High performance sensor for partial discharge signal-analyzing systems (2015-08-18),
3. 8988099 - On-line time domain reflectometer system (2015-03-24),
4. 8967178 - Saturation valve assembly for electric cables (2015-03-03),
5. 8344252 - Cable splice connection assembly (2013-01-01),
6. 7959477 - Cable termination connection assembly (2011-06-14),
7. 7777131 - Composition and method for restoring an electrical cable and inhibiting corrosion in the aluminum conductor core (2010-08-17),
8. 7723611 - Cable connector having fluid reservoir (2010-05-25),
9. 7704087 - Check valve for charge tank (2010-04-27),
10. 7658629 - Cable connection assembly (2010-02-09),
11. 7621767 - Cable connection assembly (2009-11-24),
12. 7544105 - Cable and cable connection assembly (2009-06-09),
13. 7344396 - Cable connection assembly (2008-03-18),
14. 7331806 - Cable connectors with internal fluid reservoirs (2008-02-19),
15. 7256350 - Fluid reservoir for a cable span (2007-08-14),
Company Overview
Utilx Corporation, based in Kent, Washington, specializes in providing advanced utility solutions, particularly in the field of underground infrastructure. The company focuses on developing innovative technologies and services that enhance the efficiency and reliability of utility operations. With a commitment to improving asset management and operational performance, Utilx plays a vital role in supporting utility companies in their efforts to modernize and maintain critical infrastructure systems.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

Utilx Corporation USPTO Patent Assignee Logo
30 Patents

#10 in Kent, WA

#246 in Washington

#11,279 in US

#21,912 in the World

Kent, WA (US)
Kent, WA, United States of America

Utilx Corporation

Forward Citations = 703

14 inventors:

goldMedal William R Stagi (17 out of 18 patents)

silverMedal James R Steele (12 out of 63 patents)

bronzeMedal Glen John Bertini (11 out of 59 patents)

4.  Keith Lanan (7 out of 7 patents)

5.  Glenn S Jessen (5 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Utilx Corporation. Retrieved from https://idiyas.com/company/utilx

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]
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