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:
Oct. 23, 1990
Filed:
Nov. 17, 1989
Applicant:
Inventors:
Hanns P Muller, Bergisch-Gladbach, DE;
Manfred Kapps, Bergisch-Gladbach, DE;
Peter Vehlewald, Leichlingen, 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:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C04B / ;
U.S. Cl.
CPC ...
521110 ; 528 48 ;
Abstract
The present invention relates to a process for strengthening geological formations in underground mining or underground construction work by the introduction of reaction mixtures which react to form polyurethane plastics into the formations which are required to be strengthened, wherein the reaction mixtures are based on