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:
Apr. 13, 1976
Filed:
Sep. 12, 1974
Applicant:
Inventor:
Frank Meyer, Essen, DT;
Assignee:
Bergwerksverband GmbH, Essen, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65G / ; E21F / ;
U.S. Cl.
CPC ...
61- 5 ; 166295 ; 260 / ;
Abstract
Process for isolating aqueous brine layers in underground gas-storage caverns which comprises injecting into the said cavern a liquid polyurethane-resin-forming composition that is hardenable by reaction with water which, upon hardening, forms a resinous barrier between the brine and the gas-storage space thereabove that is essentially impervious to water vapor. The liquid hardenable polyurethane-resin-forming composition comprises a polyol and a polyisocyanate of an aromatic hydrocarbon.