Forward Citations = 16

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4 inventors (with patents filed for the assignee):

John G Thomas (2 out of 3 patents)

Thomas A Walraven (2 out of 2 patents)

James B Hall (2 out of 2 patents)

4. Janet Devine (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 4088257 - Ultrasonic spot welder (1978-05-09),

2. 4071182 - Method of making container with easy open top (1978-01-31),

3. 4036397 - Container with easy open top (1977-07-19),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

3 Patents

#36 in West Chester, PA

#2,684 in Pennsylvania

#73,904 in US

West Chester, PA, United States of America

Christiana Metals Corporation

Forward Citations = 16

4 inventors:

John G Thomas (2 out of 3 patents)

Thomas A Walraven (2 out of 2 patents)

James B Hall (2 out of 2 patents)

4. Janet Devine (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Christiana Metals Corporation. Retrieved from https://idiyas.com/company/christiana-metals

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]