Abrasive tool making process – material – or composition – With synthetic resin
Reexamination Certificate
2007-11-27
2007-11-27
Marcheschi, Michael (Department: 1755)
Abrasive tool making process, material, or composition
With synthetic resin
C051S302000, C051S303000, C051S307000, C051S309000, C451S041000, C106S003000, C106S005000
Reexamination Certificate
active
10444104
ABSTRACT:
The present invention provides an aqueous slurry composition that comprises cerium oxide and/or cerium oxide-containing mixed rare earth oxide abrasive particles, a polyacrylate, and an agent that retards hard settling. The agent that retards hard settling is preferably a polysaccharide such as xanthan gum, microcrystalline cellulose and/or sodium alginate, the latter of which may be treated with a divalent metal salt such as calcium carbonate. The slurry composition according to the invention can be used to polish glass and glass ceramics at a high removal rate, but does not hard settle upon extended static conditions and can be easily resuspended. The present invention also provides a method of polishing a glass or glass ceramic substrate using the slurry composition.
REFERENCES:
patent: 2625514 (1953-01-01), Kirschenbauer
patent: 4222747 (1980-09-01), Dauguet et al.
patent: 5000761 (1991-03-01), Mayton et al.
patent: 5026421 (1991-06-01), Le Loarer et al.
patent: 5266088 (1993-11-01), Sandusky et al.
patent: 5286405 (1994-02-01), Rennie et al.
patent: 5382272 (1995-01-01), Cook et al.
patent: 5391258 (1995-02-01), Brancaleoni et al.
patent: 5476606 (1995-12-01), Brancaleoni et al.
patent: 5532307 (1996-07-01), Bogan, Jr.
patent: 5639296 (1997-06-01), Garino
patent: 5733819 (1998-03-01), Kodama et al.
patent: 5861055 (1999-01-01), Allman et al.
patent: 5876490 (1999-03-01), Ronay
patent: 6221119 (2001-04-01), Homola
patent: 6248143 (2001-06-01), Masuda et al.
patent: 6280652 (2001-08-01), Inoue et al.
patent: 2002/0039875 (2002-04-01), Kobayashi et al.
patent: 2004/0010978 (2004-01-01), Uchino et al.
patent: 2004/0031206 (2004-02-01), Uchino et al.
patent: 2000-109804 (2000-04-01), None
patent: 2000109804 (2000-04-01), None
patent: PCT/JP02/05066 (2002-12-01), None
patent: WO 02/096999 (2002-12-01), None
Clare, “Algin,” Industrial Gums Polysaccharides and Their Derivatives, Third Edition, pp. 105-131, no date.
Cottrell et al., “Alginates,” Handbook of Water-Soluble Gums and Resins, Chapter 2, p. 2-10 through 2-15, no date.
Ernsberger, “Attack of Glass by Chelating Agents,” Journal of The American Ceramic Society, vol. 42, No. 8, pp. 373-375, Aug. 1959.
Cook, “Chemical Processes In Glass Polishing,” Journal of Non-Crystalline Solids 120, 1990, pp. 152-171, no month.
Bacon et al., “Promotion of Attack on Glass and Silica by Citrate and Other Anions in Neutral Solution,” Journal of The Amer. Cer. Soc., vol. 42, No. 4, Apr. 1959, pp. 199-205.
Patent Abstracts Of Japan, Publication No. 06-330025, Publication Date Nov. 29, 1994, Application No. 05-138948, six pages.
Burm, Jr. LeVern G.
Ferranti Steven A.
Goff Karla Marie
Zagari Dana L.
Ferro Corporation
Marcheschi Michael
Rankin, Hill Porter & Clark LLP
LandOfFree
Slurry composition and method of use does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Slurry composition and method of use, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Slurry composition and method of use will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3829520