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
2007-02-19
2009-06-30
Theisen, Mary Lynn F (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
Formation of solid particulate material directly from molten...
By extrusion spraying or gravity fall through orifice
C264S005000, C264S013000
Reexamination Certificate
active
07553433
ABSTRACT:
Provided is an aerosol method, and accompanying apparatus, for preparing powdered products of a variety of materials involving the use of an ultrasonic aerosol generator (106) including a plurality of ultrasonic transducers (120) underlying and ultrasonically energizing a reservoir of liquid feed (102) which forms droplets of the aerosol. Carrier gas (104) is delivered to different portions of the reservoir by a plurality of gas delivery ports (136) delivering gas from a gas delivery system. The aerosol is pyrolyzed to form particles, which are then cooled and collected. The invention also provides powders made by the method and devices made using the powders.
REFERENCES:
patent: 4871489 (1989-10-01), Ketcham
patent: 5439502 (1995-08-01), Kodas et al.
Caruso James
Chandler Clive D.
Hampden-Smith Mark J.
Kodas Toivo T.
Powell Quint H.
Cabot Corporation
Marsh & Fischmann & Breyfogle LLP
Theisen Mary Lynn F
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