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:
Feb. 27, 1990
Filed:
May. 08, 1989
Applicant:
Inventors:
Manfred Schmidt, Dormagen, DE;
Manfred Kapps, Bergisch Gladbach, DE;
Max Mann, Odenthal, DE;
Peter Vehlewald, Leichlingen, DE;
Manfred Dietrich, Leverkusen, DE;
Frank Meyer, Essen, DE;
Wolfgang Cornely, Gladbeck, DE;
Hans E Mehesch, Essen, DE;
Assignees:
Bayer Aktiengesellschaft, Leverkusen, DE;
Bergwerksverband GmbH, Essen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E02D / ; C08G / ;
U.S. Cl.
CPC ...
405264 ; 166295 ; 299 11 ; 523130 ; 523132 ;
Abstract
The present invention is directed to a process for the strengthening of geological formations in underground workings and mines by the introduction of reaction mixtures which react to form polyurethanes into the formations which are to be strengthened, the reaction mixtures being based on