Forward Citations = 45

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3 inventors (with patents filed for the assignee):

Richard A Wolfe (2 out of 3 patents)

Robert E Wright (2 out of 3 patents)

Chang J Im (2 out of 3 patents)

2 patents: Sort by Forward Citations

1. 5296005 - Process for converting coal into liquid fuel and metallurgical coke (1994-03-22),

2. 5151159 - Method and apparatus for converting coal into liquid fuel and (1992-09-29),

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

2 Patents

#12 in Bristol, VA

#1,740 in Virginia

#94,782 in US

Bristol, VA, United States of America

Coal Technology Corporation

Forward Citations = 45

3 inventors:

Richard A Wolfe (2 out of 3 patents)

Robert E Wright (2 out of 3 patents)

Chang J Im (2 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Coal Technology Corporation. Retrieved from https://idiyas.com/company/coal-technology

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]