US3330874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sorbitol crystallization process
Assignee: Pfizer Inc
•
Filing: 1963-01-31
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Granted: 1967-07-11
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Expires: 1983-01-31
Abstract
No abstract record available.
Inventors
- 👤 Robert F Shannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:18
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C29/76; C07C29/78; B; B01; B01D; B01D9/00; B01D9/0004; B01D9/0009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS FOR PRODUCING PARTICULATE SOLID SORBITOL WHICH COMPRISE AGITATING MOLTEN SORBITOL CONTAINING UP TO ABOUT 5% MOISTURE WITH BETWEEN ABOUT 1.3 AND ABOUT 5 PARTS BY WEIGHT OF GRANULAR SORBITOL AT A TEMPERATURE FROM ABOUT 45*C. TO ABOUT 95*C. TO OBTAIN A PARTICULATE MATRIX OF MOLTEN SORBITOL CONTAINING THEREIN GRANULES OF SOLID SORBITOL, SAID AGITATION AND SAID TEMPERATURE BEING SO ADJUSTED THAT SAID GRANULAR SORBITOL REMAINS SOLID, AND CONTINUING SAID AGITATION WITH COOLING UNTIL THE MOLTEN SORBITOL OF THE PARTICULATE MATRIX CRYSTALLIZES.
Claim 2
Dependent Claim
83 words
A PROCESS FOR PRODUCING PARTICULATE SOLID SORBITOL WHICH COMPRISE AGITATING MOLTEN SORBITOL CONTAINING UP TO ABOUT 5% MOISTURE WITH BETWEEN ABOUT 1.3 AND ABOUT 5 PARTS BY WEIGHT OF GRANULAR SORBITOL AT A TEMPERATURE FROM ABOUT 45*C. TO ABOUT 95*C. TO OBTAIN A PARTICULATE MATRIX OF MOLTEN SORBITOL CONTAINING THEREIN GRANULES OF SOLID SORBITOL, SAID AGITATION AND SAID TEMPERATURE BEING SO ADJUSTED THAT SAID GRANULAR SORBITOL REMAINS SOLID, AND CONTINUING SAID AGITATION WITH COOLING UNTIL THE MOLTEN SORBITOL OF THE PARTICULATE MATRIX CRYSTALLIZES.
References Cited (Backward Citations)
US2594863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |