Patents Assigned to STAY FRESH TECHNOLOGY, LLC
  • Freeze drying with constant-pressure and constant-temperature phases
    Patent number: 11287185
    Abstract: Freeze-drying methods and systems include performing a constant-pressure drying phase in a chamber, where a temperature of a heating tray increases. A constant-temperature drying phase is performed in the chamber, where a pressure in the chamber decreases. Additional phases alternate between constant-pressure drying phases and constant-temperature drying phases. The alternating drying phases are halted, responsive to a determination that the temperature of the heating tray has reached a maximum temperature.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: March 29, 2022
    Assignee: STAY FRESH TECHNOLOGY, LLC
    Inventor: Tonghu Jiang