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. 17, 2001
Filed:
Jun. 28, 1999
Malcolm Warren, Corfu, NY (US);
David C. D. Reichert, Arkon, NY (US);
Warren Metallurgical, Inc., Corfu, NY (US);
Abstract
An integral ring which is contains at least 35 weight percent of a precious metal selected from the group consisting of silver and gold and has a porosity of less than 0.1 percent, a Vickers pyramidal hardness of at least about 120, and a tensile strength at least about 60,000 pounds per square inch. The ring has an inner diameter of from about 0.55 to about 0.93 inches, and outer diameter of from about 0.61 to about 1.09 inches, a thickness of from about 0.03 to about 0.08 inches, and a circumference of from about 1.7 to about 3.5 inches. Disposed about and extending around the entire outer surface of the ring is a first annular groove and a second, spaced apart annular groove, and at least 10 adjoining recessed areas are disposed between and communicate with these annular grooves. Each of the first annular groove and the second annular groove has a width of from about 0.01 to about 0.02 inches and a depth of from about 0.008 to about 0.018 inches. Disposed between the adjoining recessed areas are at least about 10 raised indicia.