Plastic article or earthenware shaping or treating: apparatus – Air felting type shaping means – Means forming running length product
Reexamination Certificate
2011-07-19
2011-07-19
Gupta, Yogendra N (Department: 1744)
Plastic article or earthenware shaping or treating: apparatus
Air felting type shaping means
Means forming running length product
C425S17480E, C425S382200, C425S464000
Reexamination Certificate
active
07980838
ABSTRACT:
The present invention relates to an electrospinning apparatus for mass-production of nanofibers, particularly to an electrospinning apparatus with an electric stability and an improved nozzle blocks. The bottom-up electrospinning apparatus for the mass-production of nanofiber comprises at least one nozzle block having a plurality of spinning nozzles arranged in the horizontal and vertical direction; a collector installed over the nozzle blocks in order to correspond to the nozzle blocks and maintain a certain distance in between; a power source to apply voltage difference between the nozzle block and the collector; and a spinning solution container to supply the spinning solution to the nozzle block, wherein the nozzle block and the collector are connected to the positive terminal and the negative terminal, respectively and among a plurality of spinning nozzles arranged along the horizontal line, a spinning nozzle in the middle and a spinning nozzle in the end have different height.
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patent: 6604925 (2003-08-01), Dubson
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patent: 6991702 (2006-01-01), Kim
patent: 2005/0233021 (2005-10-01), Chun et al.
Finetex Ene, Inc.
Gupta Yogendra N
Leyson Joseph
Nixon & Vanderhye P.C.
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