Forward Citations = 34

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4 inventors (with patents filed for the assignee):

Thomas E Ban (2 out of 13 patents)

William H Marlowe (2 out of 3 patents)

John C Sheppard (1 out of 1 patent)

4. Wallace Hamilton (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 4220454 - Process for gasifying pelletized carbonaceous fuels (1980-09-02),

2. 4211536 - Poke hole closure apparatus (1980-07-08),

3. 4193862 - Recovery of oil and gas from oil shale (1980-03-18),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

3 Patents

#351 in Cleveland, OH

#2,864 in Ohio

#73,904 in US

Cleveland, OH, United States of America

Mcdowell-Wellman Company

Forward Citations = 34

4 inventors:

Thomas E Ban (2 out of 13 patents)

William H Marlowe (2 out of 3 patents)

John C Sheppard (1 out of 1 patent)

4. Wallace Hamilton (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Mcdowell-Wellman Company. Retrieved from https://idiyas.com/company/mcdowell-wellman-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]