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 The sterilized liquid is then withdrawn directly from the filter container.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
Method and apparatus for performing real time anomaly detection
Electrophotographic photoreceptor and image forming apparatus including the same
Transmission terminal, transmission system, transmission method, and recording medium storing transmission control program
Dual-box location aware and dual-bitmap voltage domain aware on-chip variation techniques
Gearbox housing
Traveling vehicle system and self-diagnosis method for the traveling vehicle system
Electrode tab for secondary battery and secondary battery using the same
  Randomly Featured Patents
Apparatus for measuring the position of a light source disposed inside a lighthouse
Method of providing shaped polymeric articles with improved receptivity to organic coatings
Semiconductor device having reduced sub-threshold leakage
Curtain turning device
Container
Method and apparatus for on-line prediction of product concept success
Reaction chamber for processing a substrate wafer, and method for processing a substrate using the chamber
Controlled impedence interposer substrate
Device for indication of predetermined tension of elongate flexible elements
Multi mode radio frequency transceiver front end circuit with inter-stage matching circuit