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:
Jan. 29, 1991
Filed:
May. 15, 1990
Applicant:
Inventors:
Boyd J Ramsey, Houston, TX (US);
William D Cameron, Galveston, TX (US);
Assignee:
Reef Industries, Inc., Houston, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
405157 ; 116209 ; 428907 ;
Abstract
A polymeric tape intended for use underground near service lines with a biocide incorporated into the polymer. The biocide's presence in the tape after burial discourages vegetative, fungal or other biological growth near the tape. Specifically tree root growth destructive to pipes is prevented. The biocide is incorporated into the plastic tape or the plastic coating on the metallic layer of a detectable tape. The biocide is incorporated in an effective amount to have biocidal activity on the surface of the tape or in increased amounts which leach form the tape.