For the Inventor, By the Inventor

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West Chester, PA, United States of America

Christiana Metals Corporation

USPTO Granted Patents = 3

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),

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USPTO Data Jan 1 1976 - Dec 16 2025

3 Patents

#37 in West Chester, PA

#2,630 in Pennsylvania

#71,953 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)

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