% Expired Patents = 100.0

Forward Citations = 30

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3 inventors (with patents filed for the assignee):

Robert E Sparks (2 out of 14 patents)

Irwin C Jacobs (1 out of 17 patents)

Norbert S Mason (1 out of 10 patents)

2 patents: Sort by Forward Citations

#506 in St. Louis, MO

#1,318 in Missouri

#94,730 in US

Particle and Coating Technologies, Inc.

Forward Citations = 30

3 inventors:

Robert E Sparks (2 out of 14 patents)

Irwin C Jacobs (1 out of 17 patents)

Norbert S Mason (1 out of 10 patents)

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