(19)
(11) EP 0 480 133 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
16.09.1992 Bulletin 1992/38

(43) Date of publication A2:
15.04.1992 Bulletin 1992/16

(21) Application number: 91111247.2

(22) Date of filing: 05.07.1991
(51) International Patent Classification (IPC)5: B24D 3/34, C09K 3/14, B24D 3/28
(84) Designated Contracting States:
BE DE FR GB IT NL

(30) Priority: 09.10.1990 US 594466

(71) Applicant: NORTON COMPANY
Worcester, MA 01615-0008 (US)

(72) Inventor:
  • Ramakrishnan, Muni S.
    Northborough, MA 01532 (US)

(74) Representative: Diehl, Hermann O. Th., Dr. et al
Diehl, Glaeser, Hiltl & Partner Patentanwälte Postfach 19 03 65
80603 München
80603 München (DE)


(56) References cited: : 
   
       


    (54) Dry grinding wheel and its application


    (57) Organically bonded abrasive articles comprising seeded sol gel alumina filamentary abrasive particles have high dry grinding performance when the particles have silicon-enriched surfaces.





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