Resources Contact Us Home
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 The sterilized liquid is then withdrawn directly from the filter container.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
Baseball themed hand clap maraca
Display screen with graphical user interface
Method of manufacturing semiconductor device and semiconductor device
Automated difference recognition between speaking sounds and music
Sensor coating
Tomlinson Harashima precoding with additional receiver processing in a multi-user multiple-input multiple-output wireless transmission system
Tread portion of an automobile tire
  Randomly Featured Patents
Photochromic materials
Baby walker
Polymeric initiators
Method of fabricating a nonvolatile semiconductor memory
Boot with D shaped buckle
Coating with anti-microbial agent for refrigerator shelving
Catalytic hydrogenation of 3-hydroxypropanal to 1,3-propanediol
Mobile phone
Method of synthesizing S-allyl-cysteine analogues and their therapeutic application in treating myocardial infarction
Valve apparatus for muffler