Jeffrey P Lenzendorf from Eastman, WI, age 64

Method Of Making Polyurethane Foam
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US Patent:

20120180400, Jul 19, 2012
Filed:

Jan 11, 2012
Appl. No.:

13/347994
Inventors:

David R. Dow - West Lakeland MN, US
Grady A. Dunham - Waterville IA, US
Douglas E. Earl - Saint Paul MN, US
Jeffrey P. Lenzendorf - Eastman WI, US
International Classification:

C08G 18/06
B24D 3/32
C08J 9/00
US Classification:

51296, 521170, 264 54
Abstract:

Herein are disclosed an apparatus and method for reaction injection molding of polyurethane foam. In the method, a recirculation loop containing polyols along with an effective amount of water, and a recirculation loop containing isocyanates, are each partially evacuated.

Polyurethane Foam Article
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US Patent:

20140295741, Oct 2, 2014
Filed:

Jun 12, 2014
Appl. No.:

14/303271
Inventors:

- St. Paul MN, US
David R. Dow - West Lakeland MN, US
Grady A. Dunham - Waterville IA, US
Douglas E. Earl - St. Paul MN, US
Jeffrey P. Lenzendorf - Eastman WI, US
International Classification:

C08G 18/06
B24D 11/02
B24D 3/32
US Classification:

451 59, 521170, 451533
Abstract:

Herein are disclosed an apparatus and method for reaction injection molding of polyurethane foam. In the method, a recirculation loop containing polyols along with an effective amount of water, and a recirculation loop containing isocyanates, are each partially evacuated.

Jeffrey P Lenzendorf