Method of and apparatus for the deep freezing of biological substances
US4107937A · kind A · utility
76Cited by
6References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 21, 1976 |
| Grant date | Aug 22, 1978 |
| Priority date | — |
| Expiry date | Dec 21, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D29/001
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.