Plastic and nonmetallic article shaping or treating: processes – Formation of solid particulate material directly from molten... – By extrusion spraying or gravity fall through orifice
Reexamination Certificate
2006-08-01
2006-08-01
Hartley, Michael G. (Department: 1618)
Plastic and nonmetallic article shaping or treating: processes
Formation of solid particulate material directly from molten...
By extrusion spraying or gravity fall through orifice
C516S053000, C424S439000, C424S489000, C424S497000, C424S405000, C424S401000, C424S400000
Reexamination Certificate
active
07083748
ABSTRACT:
A method and an apparatus for continuously producing particles from an emulsion by supercritical fluid extraction. The emulsion includes a solute suspended or dissolved in the supercritical fluid soluble first phase. The supercritical fluid and the emulsion contact each other such that the first phase dissolves from the emulsion into the supercritical fluid and the solute precipitates to form a suspension in a non supercritical fluid soluble second phase of the emulsion. The supercritical fluid carries away the dissolved first phase. The solvent bearing supercritical fluid, together with the solute suspended in the second phase, is removed from an extraction chamber at a rate that is about the same as a rate that the emulsion and the supercritical fluid flow into the extraction chamber. Thus, a constant mass and pressure is maintained in the extraction chamber and the particles are produced continuously.
REFERENCES:
patent: 4177177 (1979-12-01), Vanderhoff et al.
patent: 4582731 (1986-04-01), Smith
patent: 4734451 (1988-03-01), Smith
patent: 4744926 (1988-05-01), Rice
patent: 4898673 (1990-02-01), Rice et al.
patent: 5011819 (1991-04-01), Leibovitz
patent: 5043280 (1991-08-01), Fischer et al.
patent: 5158704 (1992-10-01), Fulton et al.
patent: 5189107 (1993-02-01), Kasai et al.
patent: 5216065 (1993-06-01), Colyer et al.
patent: 5244768 (1993-09-01), Inaba
patent: 5266205 (1993-11-01), Fulton et al.
patent: 5296166 (1994-03-01), Leong
patent: 5360478 (1994-11-01), Krukonis et al.
patent: 5389263 (1995-02-01), Gallagher et al.
patent: 5399597 (1995-03-01), Mandel et al.
patent: 5440055 (1995-08-01), Castor
patent: 5494683 (1996-02-01), Liversidge et al.
patent: 5548004 (1996-08-01), Mandel et al.
patent: 5554382 (1996-09-01), Castor
patent: 5578650 (1996-11-01), Delgado et al.
patent: 5622649 (1997-04-01), Hunter et al.
patent: 5639441 (1997-06-01), Sievers et al.
patent: 5674911 (1997-10-01), Emanuele et al.
patent: 5691387 (1997-11-01), Emanuele et al.
patent: 5696298 (1997-12-01), Emanuele et al.
patent: 5707634 (1998-01-01), Schmitt
patent: 5707673 (1998-01-01), Prevost et al.
patent: 5727333 (1998-03-01), Folan
patent: 5750679 (1998-05-01), Haas et al.
patent: 5750709 (1998-05-01), Castor
patent: 5766636 (1998-06-01), Turk et al.
patent: 5766637 (1998-06-01), Shine et al.
patent: 5770559 (1998-06-01), Manning et al.
patent: 5776486 (1998-07-01), Castor et al.
patent: 5789505 (1998-08-01), Wilkinson et al.
patent: 5827522 (1998-10-01), Nowak
patent: 5863696 (1999-01-01), Koyama et al.
patent: 5874029 (1999-02-01), Subramaniam et al.
patent: 5921478 (1999-07-01), Kamiwano et al.
patent: 5981474 (1999-11-01), Manning et al.
patent: 5990241 (1999-11-01), Emanuele et al.
patent: 5993747 (1999-11-01), Mandel
patent: 5993850 (1999-11-01), Sankaram et al.
patent: RE36665 (2000-04-01), Emanuele et al.
patent: 6087003 (2000-07-01), Benoit et al.
patent: 6095134 (2000-08-01), Sievers et al.
patent: 6106720 (2000-08-01), Kanel et al.
patent: 6214384 (2001-04-01), Pallado et al.
patent: 6228399 (2001-05-01), Parikh et al.
patent: 6235701 (2001-05-01), Senger Elsbernd et al.
patent: 6248363 (2001-06-01), Patel et al.
patent: RE37285 (2001-07-01), Emanuele et al.
patent: 6291013 (2001-09-01), Gibson et al.
patent: 6299906 (2001-10-01), Bausch et al.
patent: 6359014 (2002-03-01), Emanuele et al.
patent: 6372260 (2002-04-01), Andersson et al.
patent: 6380302 (2002-04-01), Ikenaga et al.
patent: 6384090 (2002-05-01), Riede et al.
patent: 6391452 (2002-05-01), Antonsen et al.
patent: 6414050 (2002-07-01), Howdle et al.
patent: 6416742 (2002-07-01), Stefely et al.
patent: 6440431 (2002-08-01), Yoshida et al.
patent: 6440493 (2002-08-01), Gibson et al.
patent: 6479584 (2002-11-01), Nakagawa et al.
patent: 6540393 (2003-04-01), Lyons et al.
patent: 01-158042 (1989-06-01), None
patent: WO-9501221 (1995-01-01), None
patent: WO 03/000192 (2003-01-01), None
Sjostrom, Brita and Bergenstahl, Bjorn. Preparation of submicron drug particles in lecithin-stabilized o/w emulsions; I. Model studies of the precipitation of cholesteryl acetate, International Journal of Pharmaceutics 88 53-62 (1992) Elsevier Science Publishers B.V.
Sjostrom, Brita and Bergenstahl, Bjorn. Preparation of submicron drug particles in lecithin-stabilized o/w emulsions; I. Model studies of the precipitation of cholesteryl acetate, International Journal of Pharmaceutics 84, 107-116 (1992) Elsevier Science Publishers B.V.
Nakajima, Akira; Hashimoto, Kazuhito; and Watanabe, Toshiya. Recent Studies on Super-Hydrophobic Films, Monatshefte fur Chemie 132, 31-41 (2001). Austria.
Chung, Tze-Wen; Huang, Yi-You; and Liu Yi-Ze. Effects of the rate of solvent evaporation on the characteristics of drug loaded PLLA and PDLLA microspheres, International Journal of Pharmaceutics 212 161-169 (2001).
Chattopadhyay Pratibhash
Seitzinger Jeffrey S.
Shekunov Boris Y.
Ferro Corporation
Hartley Michael G.
Rankin, Hill Porter & Clark LLP
Vu Jake
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