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. 31, 2001
Filed:
May. 04, 1999
Applicant:
Inventor:
William A. Groll, McMurray, PA (US);
Assignee:
Clad Metals LLC, Canonsburg, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
A47J 3/602 ; B23K 2/004 ; B32B 1/518 ; B32B 1/520 ;
U.S. Cl.
CPC ...
A47J 3/602 ; B23K 2/004 ; B32B 1/518 ; B32B 1/520 ;
Abstract
A 5-ply composite metal product for the manufacture of cookware is provided which contains a relatively thick copper core having relatively thin layers of pure aluminum bonded between outer layers of stainless steel. The cooking vessels made therefrom may contain a decorative groove or skived ring around a perimeter of the vessel, formed by machining away the outer layers of stainless steel and pure aluminum to visually expose the copper core.