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:
Apr. 17, 1990
Filed:
Nov. 15, 1988
Stephen P Schaffer, Hamburg, NY (US);
Patrick J McCabe, Tonawanda, NY (US);
Pierce & Stevens Corporation, Buffalo, NY (US);
Abstract
Dental restorations are made of a palladium alloy which consists essentially of, on a weight basis, 50-85 percent palladium; 5-40 percent of at least one metal selected from the group consisting of copper and cobalt; 1-15 percent gallium; up to 5 percent of a modifier selected from the group consisting of nickel, gold, indium, ruthenium, tin and mixtures thereof; from 0.005 up to 1 percent, ordinarily less than about 0.2 percent, of an oxygen scavenging component which is a member selected from the group consisting of germanium, lithium, and mixtures thereof; and up to 0.5 percent of a grain refiner selected from the group consisting of rhenium and iridium. The alloy is free of boron.