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For the Inventor, By the Inventor

Spring Lake, MI, United States of America

Polycem LLC


USPTO Granted Patents = 1

% Expired Patents = 100.0

Forward Citations = 1

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2 inventors (with patents filed for the assignee):

goldMedal John Thomas Slagter (1 out of 4 patents)

silverMedal Harvey Dale DeFord (1 out of 2 patents)


1 patent:

1. 8017672 - Polymer-cement composites and methods of making same (2011-09-13),
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USPTO Data Jan 1 1976 - Sep 29 2026

1 Patents

#16 in Spring Lake, MI

#4,584 in Michigan

#136,674 in US

Spring Lake, MI (US)
Spring Lake, MI, United States of America

Polycem LLC

Forward Citations = 1

2 inventors:

goldMedal John Thomas Slagter (1 out of 4 patents)

silverMedal Harvey Dale DeFord (1 out of 2 patents)

Please report any incorrect information to [email protected]
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