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:
Mar. 06, 1990
Filed:
Jan. 10, 1989
Applicant:
Inventors:
Tatyana P Nikitina, Leningrad, SU;
Jury M Kovalchuk, Moscow, SU;
Valentina V Larionova, Leningrad, SU;
Alexandr N Volokhonsky, Leningrad, SU;
Vladislav P Lukanin, Chelyabinsk, SU;
Mikhail G Efros, Leningrad, SU;
Ivan P Vasiliev, Leningrad, SU;
Ilya Z Pevzner, Leningrad, SU;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B24D / ;
U.S. Cl.
CPC ...
51307 ; 51309 ;
Abstract
A material containing corundum crystals from 5 to 350 microns in size and any one of the additions: spinel, anorthitic glass, cordieritic glass, or a mixture of spinel and either of said glasses. Said addition amounts to 1.5-7.5% by mass of the abrasive material and is spread between the corundum crystals in the form of interlayers less than 20 microns thick.