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 The sterilized liquid is then withdrawn directly from the filter container.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
Real-time demand prediction in a fast service restaurant environment
Blow moulding machine with compressed air recycling
Single-chain variable fragment (scFv) able to recognize and bind CD99 human protein
Management of computer-file sharing between at least two devices
Image forming apparatus forming images in response to image formation request from operation unit or external device
System and method for producing statistically valid assay means and ranges for quality control materials
Processing color and panchromatic pixels
  Randomly Featured Patents
Surface treatment apparatus and image-forming apparatus
Reinforced vehicle structure
Process for producing a cationic polyurethane
.beta.-Glucuronidase activity and/or pH-dependent pharmaceuticals and thier methods of production
Fluid pressure regulator
Disk tray
Methods of diagnosing and treating preeclampsia
Shape memory alloy rotary actuator with capacitive position feedback
Breaking device for a dual bearing reel
Method and apparatus for measuring use of a substrate in a microbially catalyzed reaction