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:
Mar. 31, 1992
Filed:
Jul. 12, 1990
Applicant:
Inventor:
Helmut Graf, Regensburg, DE;
Assignee:
Rebar Couplerbox, Inc., Humble, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428613 ; 428626 ; 428653 ;
Abstract
The reinforcing steel has a protective coating formed from a first layer of synthetic material and a second layer of aluminum or aluminum alloy between the first layer and the outer surface of the reinforcing steel.