% Expired Patents = 40.0

Forward Citations = 112

Loading Chart...

6 inventors (with patents filed for the assignee):

Fred L Sabins (2 out of 8 patents)

Voldi E Maki, Jr (1 out of 21 patents)

Geoffrey Robinson (1 out of 4 patents)

4. David B Larson (1 out of 2 patents)

5. Voldi Maki (1 out of 1 patent)

6. Walter D Rose (1 out of 1 patent)

5 patents: Sort by Forward Citations

1. 6691559 - Viscometer (2004-02-17),

2. 6575019 - Reciprocating drive/pump system and reciprocating capillary viscometer utilizing same (2003-06-10),

3. 6345535 - Apparatus and method for estimating the compressive strength of foam cement (2002-02-12),

4. 5992223 - Acoustic method for determining the static gel strength of a cement (1999-11-30),

5. 4506542 - Apparatus and procedure for relative permeability measurements (1985-03-26),

Company Overview

Chandler Engineering Company, LLC is a leading provider of testing equipment and services for the oil and gas industry. With over 70 years of experience, Chandler Engineering offers a wide range of products including drilling fluid testing equipment, cement testing equipment, and flowback equipment. Their innovative solutions help companies improve efficiency, safety, and reliability in their operations. Visit their website to learn more about their products and services.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

5 Patents

#11 in Broken Arrow, OK

#270 in Oklahoma

#51,620 in US

Broken Arrow, OK, United States of America

Chandler Engineering Company, LLC

Forward Citations = 112

6 inventors:

Fred L Sabins (2 out of 8 patents)

Voldi E Maki, Jr (1 out of 21 patents)

Geoffrey Robinson (1 out of 4 patents)

4. David B Larson (1 out of 2 patents)

5. Voldi Maki (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Chandler Engineering Company, LLC. Retrieved from https://idiyas.com/company/chandler-engineering-company

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]