Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Sterilization of cryogenic liquids by ultrafiltration










Image Number 3 for United States Patent #4759848.

A cryogenic liquid is sterilized by passing it through a microporous filter, while subcooling the liquid. Subcooling virtually eliminates the possiblity of formation of gas bubbles in the liquid, and thereby insures that the desired mass flow of liquid, through the filter, will be maintained. The apparatus used with this invention comprises an insulated tank, filled with cryogenic liquid. A container having a microporous filter disposed therein, is submerged within the tank. The filter can be made of nylon mesh, which is encased within a polypropylene frame. The filter has a pore size of about 0.2 microns or less. The liquid to be sterilized is a saturated cryogenic liquid. The liquid in the tank is held at a temperature lower than that of the liquid to be sterilized, and therefore subcools the liquid being sterilized. The sterilized liquid is then withdrawn directly from the filter container.








 
 
  Recently Added Patents
Mobile phone
Semiconductor arrangement with a solder resist layer
Spalling utilizing stressor layer portions
Process for manufacturing a self-sealing composition
Semiconductor device and method for manufacturing the same
Vehicle battery with cell balancing current paths and method of charging the same
Light powered hearing aid
  Randomly Featured Patents
Dented steel pipe
Branched crystalline polypropylene
Programmable fluid detector
Teeming spout
Base assembly
Electrical connections via unidirectional conductive elastomer for pin carrier outside lead bond
Malfunction diagnosis system and malfunction diagnosis method for electric vehicle on-board device
Pharmaceutical agent containing Rho kinase inhibitor
Solar cell module excelling in reliability
Compact, maintainable 80-KeV neutral beam module