The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 28, 1999
Filed:
May. 05, 1997
Applicant:
Inventors:
Dietrich Scherzer, Neustadt, DE;
Ludwig Jung, Mammendorf, DE;
Bernd Bruchmann, Freinsheim, DE;
Hans Renz, Meckenheim, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
264136 ; 264321 ; 264324 ; 528 45 ; 528 48 ; 528 55 ; 528 67 ; 528 73 ;
Abstract
Sheet-like polyurethane moldings are produced by impregnation of porous sheets with a prepolymer containing free isocyanate groups and reversibly blocked isocyanate-reactive groups or containing free isocyanate-reactive groups and reversibly blocked isocyanate groups, and subsequent reaction of the prepolymers in a heated mold.