3670520

Information

• Patent Grant
• 3670520

• References
• Source

• Patent Number

  3,670,520

• Date Filed

  Not available

• Date Issued

  Tuesday, June 20, 1972
  52 years ago

• CPC

  • A23F5/32 - by lyophilisation
  • A23C1/08 - Freeze-drying
  • A23L3/361 - the materials being transported through or in the apparatus, with or without shaping
  • A23L3/375 - with direct contact between the food and the chemical
  • A23L3/44 - Freeze-drying
  • B01J2/04 - in a gaseous medium
  • F25C1/00 - Production of ice
  • F28C3/06 - the heat-exchange media being a liquid and a gas or vapour

• US Classifications

  • 062 - Refrigeration