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For the Inventor, By the Inventor

Savage, MN, United States of America

Rpm, Inc.


USPTO Granted Patents = 3

Trademarks = 5

Forward Citations = 107

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3 inventors (with patents filed for the assignee):

goldMedal Ronald D Sovell (2 out of 2 patents)

silverMedal Robert M Evans (1 out of 13 patents)

bronzeMedal Thomas M Leonard (1 out of 2 patents)


3 patents:

1. 6419988 - Absorbent impervious mat for protection of surfaces (2002-07-16),
2. 6136377 - Plant coaster (2000-10-24),
3. 4460737 - Polyurethane joint sealing for building structures (1984-07-17),
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USPTO Data Jan 1 1976 - Sep 22 2026

3 Patents

#6 in Savage, MN

#1,979 in Minnesota

#73,716 in US

Savage, MN (US)
Savage, MN, United States of America

Rpm, Inc.

Forward Citations = 107

3 inventors:

goldMedal Ronald D Sovell (2 out of 2 patents)

silverMedal Robert M Evans (1 out of 13 patents)

bronzeMedal Thomas M Leonard (1 out of 2 patents)

Please report any incorrect information to [email protected]
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