Forward Citations = 34

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3 inventors (with patents filed for the assignee):

James R DeFife (1 out of 2 patents)

William D Peeples (1 out of 1 patent)

Gerald W Ernest (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 4310451 - Free flowing rigid PVC resin powder compositions (1982-01-12),

2. 4283516 - Process for the suspension polymerization of polyvinyl chloride (1981-08-11),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

2 Patents

#770 in Dallas, TX

#6,308 in Texas

#94,905 in US

Dallas, TX, United States of America

Diamond Shamrock Plastics Corporation

Forward Citations = 34

3 inventors:

James R DeFife (1 out of 2 patents)

William D Peeples (1 out of 1 patent)

Gerald W Ernest (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Diamond Shamrock Plastics Corporation. Retrieved from https://idiyas.com/company/diamond-shamrock-plastics

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]