Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – With subsequent cutting – grooving – breaking – or comminuting
Reexamination Certificate
2011-03-22
2011-03-22
Michener, Jennifer K (Department: 1795)
Plastic and nonmetallic article shaping or treating: processes
Forming articles by uniting randomly associated particles
With subsequent cutting, grooving, breaking, or comminuting
C264S109000, C425S202000, C366S088000, C366S090000, C366S091000, C366S318000, C510S444000
Reexamination Certificate
active
07910030
ABSTRACT:
An apparatus for wet granulating a powder material comprises: —a barrel having a granulation chamber and being provided with a first inlet (1) for receiving said powder material and for supplying it to said granulation chamber and with a second inlet (2) for receiving a granulating liquid and for supplying it to said granulation chamber, said granulation having an aperture (9) for discharge of granules from said barrel, and —a transporting means (S) for advancing said powder material toward the end of said granulation chamber while granulating it with the aid of said granulating liquid, said transporting means (S) comprising a first transport zone (4) at its rear end, an agglomeration zone (5) downstream from the first transport zone (4) and a second transport zone (8) at its front end, said first inlet (1) and said second inlet (2) being positioned above the first transport zone (4), wherein said aperture (9) has a shape tightly fitting the terminal portion of the transporting means (S) for directly discharging said granules from the granulation chamber. The apparatus is useful for continuously wet granulating biologically-active ingredient formulations, chemicals, detergents and foodstuffs.
REFERENCES:
patent: 3642406 (1972-02-01), Irving
patent: 3730663 (1973-05-01), Hare
patent: 4416606 (1983-11-01), Sugano et al.
patent: 4607797 (1986-08-01), Brinkmann et al.
patent: 4890996 (1990-01-01), Shimizu
patent: 5018671 (1991-05-01), Tanimoto et al.
patent: 5240400 (1993-08-01), Fujimoto et al.
patent: 5382377 (1995-01-01), Raehse et al.
patent: 6174851 (2001-01-01), Harth et al.
patent: 6499984 (2002-12-01), Ghebre-Sellassie et al.
patent: WO 01/89679 (2001-11-01), None
Martin, Charlie. “In the Mix: Continous Compounding Using Twin-Screw Extruders” in www.devicelink.com, retrieved Jun. 20, 2001.
Amidon et al., “A Theoretical Basis for a Biopharmaceutic Drug Classification: The Correlation of In Vitro Drug Product Dissolution and In Vivo Bioavailability,”Pharm. Res., 12:413-420 (1995).
Aulton, Pharmaceutical Granulation Equipment, Found In:Pharmaceutics: The Science of Dosage Form Design, Publisher Churchill Livingstone, 1stEdition, 1988, pp. 623-625.
Gamlen et al., “Continuous Extrusion Using A Baker Perkins MP50 (Multipurpose) Extruder,”Drug Dev. and Ind. Pharm., 12:1701-1713 (1986).
Keleb et al., “Continuous Twin Screw Extrusion for the Wet Granulation of Lactose,”Int. J. Pharm., 239:69-80 (2002).
Lindberg, “Continuous Wet Granulation,”Manufacturing Chemist, pp. 35-38, Dec. 1988.
Leuenberger, “New Trends in the Production of Pharmaceutical Granules: Batch Versus Continuous Processing,”Eur. J. Pharm. Biopharm. 52:289-296 (2001).
International Search Report (PCT/EP03/13327) mailed Apr. 23, 2004.
International Preliminary Report on Patentability (PCT/EP03/13327) dated Apr. 7, 2005.
Official Communication (EP Application No. 03 780 069.5), mailed Jun. 26, 2009.
Official Communication (EP Application No. 03 780 069.5), dated May 23, 2007.
Rauwendaal, Chris.Polymer Extrusion, 3rded. New York: Hanser Publishers, 1994: 460-497.
Keleb Eseldin
Remon Jean-Paul
Vermeire An
Vervaet Chris
Clark & Elbing LLP
Michener Jennifer K
Slawski Magali P
Universiteit Gent
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