Forward Citations = 607

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6 inventors (with patents filed for the assignee):

Kenneth J Schmitt (3 out of 14 patents)

Ronald Marshall Bass (2 out of 55 patents)

Bernard J Eastlund (2 out of 11 patents)

4. Gordon O Cates (1 out of 1 patent)

5. John M Harrison (1 out of 1 patent)

6. Douglas C Anderson (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 5207273 - Method and apparatus for pumping wells (1993-05-04),

2. 4861074 - Tubing collar (1989-08-29),

3. 4716960 - Method and system for introducing electric current into a well (1988-01-05),

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

3 Patents

#1,212 in Houston, TX

#4,791 in Texas

#73,860 in US

Houston, TX, United States of America

Production Technologies International Inc.

Forward Citations = 607

6 inventors:

Kenneth J Schmitt (3 out of 14 patents)

Ronald Marshall Bass (2 out of 55 patents)

Bernard J Eastlund (2 out of 11 patents)

4. Gordon O Cates (1 out of 1 patent)

5. John M Harrison (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Production Technologies International Inc.. Retrieved from https://idiyas.com/company/production-technologies-international

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]