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
2011-07-05
2011-07-05
Theisen, Mary Lynn F (Department: 1743)
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, C264S011000, C366S176100, C425S006000
Reexamination Certificate
active
07972543
ABSTRACT:
An object of the present invention is to provide a process for producing microspheres that are solid microparticles or liquid microparticles for use as an emulsion employed in the food industry, production of medicine and cosmetic etc. or an emulsion for DDS (drug delivery system). The object is attained by a process for producing a microsphere including: separating a disperse phase from a continuous phase by a substrate1having a through-hole7; and extruding the disperse phase into the continuous phase through the through-hole7, in which the substrate having the through-hole7with a width of 0.5 to 500 μm, a depth of 10 μm to 6000 μm and a ratio of the width to the depth of the through-hole7of 1 to 1/30 is a metal substrate.
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Isao Kobayashi, et al., “Micro Machining Gijutsu Ni Yoru Tanbunsan Micro Sphere Sakuseiyo Kantsugata Silicon Micro Channel No Sakusei”, CSJ: The Chemical Society of Japan 79thSpring Meeting, vol. 1, p. 411, 2001.
Fukuda Motohiro
Kanai Seiichi
Kitani Takenori
Nakajima Mitsutoshi
Nishi Taiji
Kuraray Co. Ltd.
Nakajima Mitsutoshi
National Agriculture and Food Research Organization
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Theisen Mary Lynn F
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