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:
Jul. 03, 1990
Filed:
Mar. 07, 1989
Applicant:
Inventor:
Lindsey D Lee, Houston, TX (US);
Assignee:
Halliburton Company, Ducan, OK (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E02D / ; E21F / ;
U.S. Cl.
CPC ...
405154 ; 138 97 ; 106682 ; 405156 ;
Abstract
The present invention comprises a method of grouting a slipliner in a sewer or drain pipe using foam cements having a specific gravity less than 1.0 and have adequate compressure strength to maintain the slipliner in position within the sewer or drain pipe.