For the Inventor, By the Inventor

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St. Charles, MO, United States of America

Tetra Plastics, Inc.

USPTO Granted Patents = 2

CIPO Patents = 1

Forward Citations = 434

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4 inventors (with patents filed for the assignee):

Henry W Bonk (1 out of 26 patents)

Paul H Mitchell (1 out of 11 patents)

Frederick L Hawes (1 out of 1 patent)

4. James C Sell, Jr (1 out of 27 patents)

5. David J Goldwasser (24 patents)

2 patents: Sort by Forward Citations

1. 5713141 - Cushioning device with improved flexible barrier membrane (1998-02-03),

2. 3993001 - Explosive expansion means for attaching tubes to tube sheets (1976-11-23),

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USPTO Data Jan 1 1976 - Sep 22 2026

2 Patents

#19 in St. Charles, MO

#1,318 in Missouri

#94,681 in US

St. Charles, MO, United States of America

Tetra Plastics, Inc.

Forward Citations = 434

4 inventors:

Henry W Bonk (1 out of 26 patents)

Paul H Mitchell (1 out of 11 patents)

Frederick L Hawes (1 out of 1 patent)

4. James C Sell, Jr (1 out of 27 patents)

5. David J Goldwasser (24 patents)

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