US3579360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lyophilising a carbon dioxide solution
Assignee: Nestec SA
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Filing: 1967-07-06
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Granted: 1971-05-18
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Expires: 1987-07-06
Abstract
Abstract POROUS COMPOSITE MATERIALS, CONSISTING OF A CONTINUOUS PHASE AND A DISPERSE PHASE IN INTIMATE ASSOCIATION WITH THE CONTINUOUS PHASE MAY BE OBTAINED BY THE APPLICATION OF FREEZE-DRYING TECHNIQUES. THE MATERIALS MAY BE PREPARED EITHER BY FREE-DRYING A FIRST SOLUTION, IMPREGNATING THE DRY MATERIAL WITH A SECOND SOLUTION AND AGAIN FREEZEDRYING, OR BY FREEZE-DRYING A SYSTEM CONSISTING OF TWO SOLUTES DISSOLVED IN DIFFERENT SOLVENTS WHICH MAY BE IMMISIBLE. FREEZE-DRYING OF BOTH AQUEOUS AND NON-AQUEOUS SYSTEMS IS ENVISAGED.
Inventors
- 👤 Louisrene Rey
- 👤 Monick Dousset
- 👤 Francoise Chauffard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:35
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/36; C08J9/40; A; A21; A21D; A21D13/00; A21D13/80; A21D6/00; A21D6/001; A21D6/008; A23; A23B; A23B2/00; A23B2/90; A23B2/92; A23F; A23F5/00; A23F5/24; A23F5/28; A23F5/32; A23F5/46; A23F5/48; A23F5/486; C07; C07F; C07F5/00; F; F26; F26B; F26B5/00; F26B5/04; F26B5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |