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(11)    Patent No :    AP 2127    (73) Applicant(s)       
(21)    Application No :    AP/P/2005/003416    PRIMET PRECISION MATERIALS, INC, 1005 Hudson Street       
            Ext., Ithica, New York 14850,       
                   
(22)    Filing Date :    10.03.2004    United States of America       
(24)    Date of Grant &    03.06.2010           
                   
(45)    Publication :

(30)  Priority Data    (72) Inventors

    (33) Country    (31) Number    (32) Date    DOBBS Robert, United States of America   
    US    60/453,427    11.03.2003    (74) Representative   
(84)    Designated State           
                   
    SL            FISHER CORMACK & BOTHA   
                   
(51)    International    Classification    C04B 35/56 (2006.01)    C09K 3/14 (2006.01)   

(54)    Title

Multi-carbide material manufacture and use

(57)    Abstract

Grinding media, including shaped media such as spheres or rods ranging in size from about 0.5 micron to 100 mm in diameter, are formed from a multi-carbide material consisting essentially of two or more carbide-forming elements and carbon, with or without carbide-forming elements in their free elemental state. The media have extremely high mass density, extreme hardness, and extreme mechanical toughness.

(56)    Documents Cited :    US 3 737 289    US 3 804367    US 2002/0047058 A1

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