Method of producing porous spherical particles

Plastic and nonmetallic article shaping or treating: processes – Formation of solid particulate material directly from molten...

Reexamination Certificate

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Reexamination Certificate

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06841097

ABSTRACT:
The invention refers to a method of controlling the porosity of porous spherical particles produced from a polysaccharide dissolved in a solvent, in which it can be gelled. The polysaccharide solution is finely divided by mechanical means into spherical droplets which are allowed to pass through a humid atmosphere and transferred to a capturing medium while controlling the temperature and humidity of humid atmosphere.

REFERENCES:
patent: 5053332 (1991-10-01), Cook et al.
patent: 5662840 (1997-09-01), Thomas et al.
patent: 6248268 (2001-06-01), Cook
patent: 4424998 (1996-02-01), None
patent: 05179005 (1993-07-01), None
patent: WO 8807414 (1988-10-01), None
patent: WO9302785 (1993-02-01), None
patent: WO9520620 (1995-08-01), None
patent: WO9931141 (1999-06-01), None

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