Powder injection system and method

Details Powder injection system and method Powder injection system and method

2004-06-24

2009-06-09

Hess, Douglas A (Department: 3651)

Conveyors: fluid current

Processes

C406S011000, C406S050000, C406S144000

Reexamination Certificate

active

07544019

ABSTRACT:
A powder injection method and a powder injection microchip, the powder injection microchip comprising: a gas supply inlet (6) for supplying gas; an outlet (8); a channel (4) in fluid connection with the gas supply inlet and the outlet; a powder inlet (12) in fluid connection with the channel, for receiving a first, open end of a powder reservoir (14), the powder reservoir having an opening (22) at or near to a second end of the powder reservoir to allow egress of gas from the powder reservoir at a point distal to the first end of the powder reservoir. The method comprises the steps of: i) supplying gas via the gas supply inlet (6) to the channel (4) and the powder inlet (12) at a velocity sufficient to cause fluidisation of powder at the powder inlet (12); (ii) reducing the supply of gas to cause powder to pass from the powder inlet and to collect in a region of the channel adjacent a point where the powder inlet connects with the channel; and (iii) repeating steps (i) and (ii) as many times as required, subsequent initialisation of step (i) causing the powder collected in the channel to be moved by the gas towards the outlet.

REFERENCES:
patent: 1598558 (1926-08-01), Cohen
patent: 3174805 (1965-03-01), Mortimer
patent: 3206255 (1965-09-01), Gray
patent: 3380780 (1968-04-01), Allen
patent: 4420279 (1983-12-01), Easley, Jr.
patent: 4775267 (1988-10-01), Yamamoto
patent: 5032256 (1991-07-01), Vickery
patent: 5098229 (1992-03-01), Meier et al.
patent: 5985119 (1999-11-01), Zanzucchi et al.
patent: 5993750 (1999-11-01), Ghosh et al.
patent: 6238538 (2001-05-01), Parce et al.
patent: 6244788 (2001-06-01), Hernandez
patent: 6514399 (2003-02-01), Parce et al.
patent: 6623860 (2003-09-01), Hu et al.
patent: 6710874 (2004-03-01), Mavliev
patent: 6729352 (2004-05-01), O'Connor et al.
patent: 6770182 (2004-08-01), Griffiths et al.
patent: 6787088 (2004-09-01), Parce et al.
patent: 6880576 (2005-04-01), Karp et al.
patent: 6915679 (2005-07-01), Chien et al.
patent: 6923907 (2005-08-01), Hobbs et al.
patent: 6939451 (2005-09-01), Zhao et al.
patent: 6994497 (2006-02-01), Eriksson et al.
patent: 7040144 (2006-05-01), Spaid et al.
patent: 7077175 (2006-07-01), Yin et al.
patent: 2002/0074271 (2002-06-01), Hu et al.
patent: 2006/0245833 (2006-11-01), Vilkner et al.
F.J.Muzzio, T.Shinbrot, B.J.Glasser,Powder Technology in the Pharmaceutical Industry: The Need to Catch Up Fast, Pharmaceutical Engineering Program, Rutgers University, 2002.
T.Vilkner, A.Manz,Powder Handling Device for Drug Formulation, Department of Chemistry, Imperial College of Science, Technology, and MedicineMicro Total Analysis Systems, vol. 1, pp. 1-7, 1-9, Nara, 2002.

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