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 The sterilized liquid is then withdrawn directly from the filter container.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
Computer server capable of supporting CPU virtualization
Early kill removal graphics processing system and method
Photon density wave based determination of physiological blood parameters
Receiving security risk feedback from linked contacts due to a user's system actions and behaviors
Circuit arrangement and method for operating a circuit arrangement
SRB enhancement on HS-DSCH during cell change
Devices, systems, and methods for tactile feedback and input
  Randomly Featured Patents
Method and system for protection against replay of an indicium message in a closed system meter
Portable two-way radio or similar article
Providing localized individually customized updates from a social network site to a desktop application
Baby monitor receiver
Managing status and access for a variable source content stream
Method of restoring processes within process domain
Method of monitoring redox of blood plasma using ESR and method of estimating progress of dialysis
Therapeutical compositions containing derivatives of, acrylic acid having an oxygen-containing heterocycle, therapeutic treatment therewith and new compounds
Special geometry generant bodies for automotive gas bag inflator
Nonvolatile semiconductor memory device