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. 20, 1993
Filed:
Mar. 10, 1992
Applicant:
Inventors:
Roy W Rice, Alexandria, VA (US);
Jyoti P Chakraverty, Wooster, OH (US);
Assignee:
W. R. Grace & Co.-Conn., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24C / ;
U.S. Cl.
CPC ...
51319 ; 5128 / ;
Abstract
Transformation-toughened material bodies such as transformation-toughened zirconia may be strengthened by grit blasting the body surface. Grit blasting of the surface with a grit material such as alumina or silicon carbide can result in flexural strength increases of at least about 10-20% compared to the body prior to blasting. The method of the invention provides strength increases comparable or better than those resulting from surface grinding and may be used for a broader variety of body shapes.