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:
Dec. 02, 2003
Filed:
Jan. 26, 2001
Applicant:
Inventors:
Arun Prasad, Cheshire, CT (US);
Martin L. Schulman, Orange, CT (US);
Grant P. Day, Cheshire, CT (US);
Assignee:
Jeneric/Pentron Incorporated, Wallingford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C 5/02 ; C22C 3/000 ;
U.S. Cl.
CPC ...
C22C 5/02 ; C22C 3/000 ;
Abstract
Dental alloys are provided having a coefficient of thermal expansion in the range from about 8 to about 18×10 /° C. in the temperature range of 25-500° C. and melting temperatures above about 800° C. but below about 1500° C. The alloys contain gold in combination with a small amount of chromium and/or tantalum. Other elements may also be included with the gold and chromium and/or tantalum to provide the necessary forming, melting, and mechanical properties required to manufacture the desired dental restoration.