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:
Sep. 26, 2000
Filed:
Feb. 04, 1994
Applicant:
Inventors:
Lee A Carman, Worcester, MA (US);
Shuyuan Liu, Shrewsbury, MA (US);
Assignee:
Norton Company, Worcester, MA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B24D / ; C04B / ;
U.S. Cl.
CPC ...
51307 ; 51308 ; 51309 ; 501-7 ; 501 32 ;
Abstract
The present invention provides an abrasive tool that comprises sol-gel alumina abrasive grains bonded together by a glass-ceramic bond material, the tool comprising from about 35 to 65% by volume void spaces, wherein at least about 75% of the volume of the bond material is located in the bond posts or in a coating on the abrasive grains and in which the volume proportion of bond to grain is from about 0.06 to 0.6.