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:
Sep. 13, 1983
Filed:
Jun. 02, 1981
Applicant:
Inventors:
Karl Gloria, Hattingen, DE;
Alexander-Barbu Costinescu-Tataranu, Essen, DE;
Wilhelm Schuster, Frankfurt am Main, DE;
Jurgen Wittekind, Frankfurt am Main, DE;
Assignee:
Ruhrgas Aktiengesellschaft, Essen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65G / ;
U.S. Cl.
CPC ...
405 53 ; 405 59 ;
Abstract
A method of covering the sump of underground cavities which serve to store gaseous or liquid non-aqueous substances. The sump is covered with a layer of highly viscous crude oil which is at least 1 cm, and preferably 20 to 50 cm, thick. The crude oil contains not more than 7% hydrocarbons having up to 5 C atoms in a molecule thereof. The crude oil has a specific gravity of 20.degree. C. of at most 1.2 g/cm.sup.3.