Patent US1495007A successfully refreshed from Google Patents.
US2853797A
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Dehydration of biological substances
Assignee: Individual
•
Filing: 1956-12-13
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Granted: 1958-09-30
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Expires: 1976-12-13
Abstract
No abstract record available.
Inventors
- 👤 Robert P Graham
- 👤 Amon H Brown
- 👤 William D Ramage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:13
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/04; F; F26; F26B; F26B5/00; F26B5/04; F26B5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN A PROCESS FOR DEHYDRATING A BIOLOGICAL MATERIAL WHEREIN THE BIOLOGICAL MATERIAL AND A SOLID ADSORBENT ARE CONTACTED WHILE MAINTAINED UNDER VACUUM AND AT A TEMPERATURE REGULATED TO KEEP THE BIOLOGICAL MATERIAL IN A SOLID STATE DURING THE DEHYDRATION, THE IMPROVEMENT WHICH COMPRISES DISPERSING THE BIOLIGICAL MATERIAL INTO WATER, FREEZING THIS DISPERSION IN THE FORM OF PARTICLES AND APPLYING THE DEHYDRATION TO THE SO-FORMED FROZEN PARTICLES OF AQUEOUS DISPERSION OF THE BILOGICAL MATERIAL.
Claim 2
Dependent Claim
73 words
IN A PROCESS FOR DEHYDRATING A BIOLOGICAL MATERIAL WHEREIN THE BIOLOGICAL MATERIAL AND A SOLID ADSORBENT ARE CONTACTED WHILE MAINTAINED UNDER VACUUM AND AT A TEMPERATURE REGULATED TO KEEP THE BIOLOGICAL MATERIAL IN A SOLID STATE DURING THE DEHYDRATION, THE IMPROVEMENT WHICH COMPRISES DISPERSING THE BIOLIGICAL MATERIAL INTO WATER, FREEZING THIS DISPERSION IN THE FORM OF PARTICLES AND APPLYING THE DEHYDRATION TO THE SO-FORMED FROZEN PARTICLES OF AQUEOUS DISPERSION OF THE BILOGICAL MATERIAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |