US3139378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making calcium sorbate
Assignee: Unilever Bestfoods North America
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Filing: 1959-05-19
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Granted: 1964-06-30
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Expires: 1979-05-19
Abstract
No abstract record available.
Inventors
- 👤 Chester M Gooding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:20
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/70; A23B2/725; A23B2/729; A23B2/742; A23B2/754; C; C07; C07C; C07C51/00; C07C51/41; C07C51/412
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
THE METHOD OF PRODUCING PARTICULATE CALCIUM SORBATE COATED WITH A WETTING AGENT WHICH COMPRISES REACTING A SUSPENSION OF CALCIUM HYDROXIDE AND A SUSPENSION OF SORBIC ACID IN AN AQUEOUS MEDIUM CONTAINING DISSOLVED WETTING AGENT, THE AMOUNT OF SORBIC ACID BEING AT LEAST THE STOICHIOMETRIC, QUANTITY REQUIRED TO REACT WITH ALL OF THE CALCIUM HYDROXIDE, PERMITTING THE REACTION TO PROCEED UNTIL ALL OF THE CALCIUM HYDROXIDE HAS BEEN REACTED, AND SEPARATING FROM THE REACTION MASS PARTICULATE CALCIUM SORBATE SUBSTANTIALLY FREE OF CALCIUM HYDROXIDE AND COATED WITH THE WETTING AGENT.
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) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |