Method of and apparatus for the deep freezing of biological subs

Details Method of and apparatus for the deep freezing of biological subs Method of and apparatus for the deep freezing of biological subs

1976-12-21

1978-08-22

Capossela, Ronald C.

Refrigeration

Processes

Treating an article

62 78, 62373, 165 30, 195 18, F25D 1702

Patent

active

041079370

ABSTRACT:
A system for the deep freezing of biological substances provides an input representing the temperature-time curve required at the outer wall of a receptacle containing biological substances to be deep-frozen while a sensor measures the actual temperatures at this wall and controls the cooling applied to the receptacle to conform the cooling at the receptable wall to the precalculated temperature-time curve. This permits the necessary temperature gradient to be applied to the biological substance for maximum cell survival without any dead time necessitated by the use of sensors within the biological substance itself.

REFERENCES:
patent: 2508988 (1950-05-01), Bradley
patent: 2662520 (1953-12-01), McMahon
patent: 3167812 (1965-02-01), Von Bennigsen
patent: 3753357 (1973-08-01), Schwartz
patent: 3940943 (1976-03-01), Sikes et al.
patent: 4033737 (1977-07-01), Kunioka et al.

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