US3956173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of gels based on carrageenan
Assignee: Hercules LLC
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Filing: 1974-07-05
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Granted: 1976-05-11
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Expires: 1994-07-05
Abstract
Abstract Cold water gellable compositions are prepared based on the sodium salt of kappa-carrageenan and a potassium salt. Gelation is controlled so that good quality gels result by encapsulating the potassium salt in a water-soluble hydroxypropyl cellulose.
Inventors
- 👤 Gordon A. Towle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:42
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/0052; B01J13/0065; A; A23; A23L; A23L29/00; A23L29/20; A23L29/206; A23L29/256; B01J13/02; B01J13/04; B01J13/046
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
52 words
In the method of preparing a gel based on carrageenan where carrageenan is dissolved in water and contacted with potassium ion, the improvement which comprises the carrageenan being the sodium salt of kappa-carrageenan and the potassium ion being incorporated in the form of a water-soluble potassium salt encapsulated in water-soluble hydroxypropyl cellulose.
Claim 2
Dependent Claim
52 words
In the method of preparing a gel based on carrageenan where carrageenan is dissolved in water and contacted with potassium ion, the improvement which comprises the carrageenan being the sodium salt of kappa-carrageenan and the potassium ion being incorporated in the form of a water-soluble potassium salt encapsulated in water-soluble hydroxypropyl cellulose.
Claim 3
Dependent Claim
21 words
The method of claim 1 wherein the dissolution in water and contacting with potassium ion are carried out at room temperature.
Claim 4
Dependent Claim
24 words
The method of claim 1 wherein the sodium kappa-carrageenan and the encapsulated potassium salt are dry blended prior to being incorporated into the water.
Claim 5
Dependent Claim
21 words
The method of claim 3 wherein the dissolution in water and contacting with potassium ion are carried out at room temperature.
Claim 6
Dependent Claim
12 words
The method of claim 2 wherein the potassium salt is potassium chloride.
Claim 7
Dependent Claim
12 words
The method of claim 4 wherein the potassium salt is potassium chloride.
Claim 8
Dependent Claim
16 words
The method of claim 6 wherein another polysaccharide is present in addition to the sodium kappa-carrageenan.
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) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |