Forward Citations = 113

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6 inventors (with patents filed for the assignee):

Edwin W Dibrell (9 out of 10 patents)

Wilbur A Schaich (4 out of 4 patents)

Glenn B O'Neal (1 out of 4 patents)

4. Klaus D Weiswurm (1 out of 7 patents)

5. Charles D Wood, Iii (1 out of 11 patents)

6. David R Greene (1 out of 1 patent)

13 patents: Sort by Forward Citations

1. 4754612 - Method for optimizing the mechanical output of a fluid pressure free (1988-07-05),

2. 4676139 - Valve mechanism for operating a piston within a cylinder (1987-06-30),

3. 4658703 - Method and apparatus for extracting heat and mechanical energy from a (1987-04-21),

4. 4589257 - Method and apparatus for extracting heat and mechanical energy from a (1986-05-20),

5. 4586426 - Multi-cylinder piston engine and method of operation thereof (1986-05-06),

6. 4558666 - Rotating cylinder engine and method of operating the engine (1985-12-17),

7. 4520632 - Method and apparatus for extracting heat and mechanical energy from a (1985-06-04),

8. 4513576 - Gas pressure operated power source (1985-04-30),

9. 4513575 - Centrifugal piston expander (1985-04-30),

10. 4449379 - Method and apparatus for extracting heat and mechanical energy from a (1984-05-22),

11. 4433551 - Method and apparatus for deriving mechanical energy from a heat source (1984-02-28),

12. 4420945 - Method and apparatus for extracting energy from a pressured gas (1983-12-20),

13. 4420944 - Air cooling system (1983-12-20),

Company Overview

Centrifugal Piston Expander, Inc. is a specialized engineering firm based in San Antonio, TX, focusing on the development and manufacturing of advanced expander technologies. The company is dedicated to innovating solutions that enhance energy efficiency and performance across various applications. Its expertise lies in the design of centrifugal piston expanders, which are utilized in energy recovery systems and other industrial processes, contributing to sustainable practices and improved operational efficiencies.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

13 Patents

#49 in San Antonio, TX

#1,488 in Texas

#23,854 in US

#45,081 in the World

San Antonio, TX, United States of America

Centrifugal Piston Expander, Inc.

Forward Citations = 113

6 inventors:

Edwin W Dibrell (9 out of 10 patents)

Wilbur A Schaich (4 out of 4 patents)

Glenn B O'Neal (1 out of 4 patents)

4. Klaus D Weiswurm (1 out of 7 patents)

5. Charles D Wood, Iii (1 out of 11 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Centrifugal Piston Expander, Inc.. Retrieved from https://idiyas.com/company/centrifugal-piston-expander

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]