Patent US3962482A successfully refreshed from Google Patents.
US3962482A
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Clear, elastic, water gels based on carrageenan
Assignee: Uniroyal Ltd Canada
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Filing: 1975-06-02
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Granted: 1976-06-08
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Expires: 1995-06-02
Abstract
Abstract Clear, elastic, water gels and gel-forming compositions are based on potassium-sensitive carrageenan in the form of an alkali metal or an ammonium salt and a water-soluble potassium salt. Addition to the composition of calcium-sensitive carrageenan, also in the form of an alkali metal or an ammonium salt, imparts freedom from syneresis. The water gels and the gel-forming compositions are characterized by essentially complete freedom from polyvalent metal cations.
Inventors
- 👤 Frederick W. Comer
- 👤 Clifford H. G. Strong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:52
CPC Classifications
A; A23; A23L; A23L29/00; A23L29/20; A23L29/206; A23L29/256
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
85 words
A composition, soluble in water to produce a clear, elastic, water gel, comprising potassium-sensitive carrageenan in the form of an alkali metal or an ammonium salt, a non-toxic, water-soluble potassium salt other than potassium carrageenate in an amount equal to from about 10 to 110% by weight based on the weight of said potassium-sensitive carrageenan, said composition being free of polyvalent metal cations in amount more than about 0.01% by weight based on the combined weights of carrageenan or carrageenans present and said potassium salt.
Claim 2
Dependent Claim
85 words
A composition, soluble in water to produce a clear, elastic, water gel, comprising potassium-sensitive carrageenan in the form of an alkali metal or an ammonium salt, a non-toxic, water-soluble potassium salt other than potassium carrageenate in an amount equal to from about 10 to 110% by weight based on the weight of said potassium-sensitive carrageenan, said composition being free of polyvalent metal cations in amount more than about 0.01% by weight based on the combined weights of carrageenan or carrageenans present and said potassium salt.
Claim 3
Dependent Claim
24 words
A composition as set forth in claim 1 which also comprises a sweetening agent, and a free organic acid to impart a tart flavor.
Claim 4
Dependent Claim
15 words
A composition as set forth in claim 1 wherein said potassium salt is potassium citrate.
Claim 5
Dependent Claim
120 words
A composition, soluble in water to produce a clear, elastic, non-weeping, water gel, comprising potassium-sensitive carrageenan in the form of an alkali metal or an ammonium salt, calcium-sensitive carrageenan in the form of an alkali metal or an ammonium salt in an amount equal to from about 30 to 155% by weight based on the weight of said potassium-sensitive carrageenan and a non-toxic water-soluble potassium salt other than potassium carrageenate in an amount equal to from about 10 to 110% by weight based on the weight of said potassium-sensitive carrageenan, said composition being free of polyvalent metal cations in amount more than about 0.01% by weight based on the combined weights of carrageenan or carrageenans present and said potassium salt.
Claim 6
Dependent Claim
120 words
A composition, soluble in water to produce a clear, elastic, non-weeping, water gel, comprising potassium-sensitive carrageenan in the form of an alkali metal or an ammonium salt, calcium-sensitive carrageenan in the form of an alkali metal or an ammonium salt in an amount equal to from about 30 to 155% by weight based on the weight of said potassium-sensitive carrageenan and a non-toxic water-soluble potassium salt other than potassium carrageenate in an amount equal to from about 10 to 110% by weight based on the weight of said potassium-sensitive carrageenan, said composition being free of polyvalent metal cations in amount more than about 0.01% by weight based on the combined weights of carrageenan or carrageenans present and said potassium salt.
Claim 7
Dependent Claim
24 words
A composition as set forth in claim 4 which also comprises a sweetening agent and a free organic acid to impart a tart flavor.
Claim 8
Dependent Claim
15 words
A composition as set forth in claim 4 wherein said potassium salt is potassium citrate.
Claim 9
Dependent Claim
80 words
A clear, elastic, water gel comprising water, potassium-sensitive carrageenan in the form of an alkali metal or an ammonium salt, and a non-toxic, water-soluble potassium salt other than potassium carrageenate in an amount equal to from about 10 to 110% by weight based on the weight of said potassium-sensitive carrageenan, said gel being free of polyvalent metal cations in amount more than about 0.01% by weight based on the combined weights of carrageenan or carrageenans present and said potassium salt.
Claim 10
Dependent Claim
80 words
A clear, elastic, water gel comprising water, potassium-sensitive carrageenan in the form of an alkali metal or an ammonium salt, and a non-toxic, water-soluble potassium salt other than potassium carrageenate in an amount equal to from about 10 to 110% by weight based on the weight of said potassium-sensitive carrageenan, said gel being free of polyvalent metal cations in amount more than about 0.01% by weight based on the combined weights of carrageenan or carrageenans present and said potassium salt.
Claim 11
Dependent Claim
25 words
A dessert gel as set forth in claim 7 which also comprises a sweetening agent and a free organic acid to impart a tart flavor.
Claim 12
Dependent Claim
16 words
A dessert gel as set forth in claim 7 wherein said potassium salt is potassium citrate.
Claim 13
Dependent Claim
114 words
A clear, elastic, non-weeping, water gel comprising water, potassium-sensitive carrageenan in the form of an alkali metal or an ammonium salt, calcium-sensitive carrageenan in the form of an alkali metal or an ammonium salt in an amount equal to from about 30 to 155% by weight based on the weight of said potassium-sensitive carrageenan, and a non-toxic, water-soluble potassium salt other than potassium carrageenate in an amount equal to from about 10 to 110% by weight based on the weight of said potassium-sensitive carrageenan, said gel geing free of polyvalent metal cations in amount more than about 0.01% by weight based on the combined weights of carrageenan or carrageenans present and said potassium salt.
Claim 14
Dependent Claim
114 words
A clear, elastic, non-weeping, water gel comprising water, potassium-sensitive carrageenan in the form of an alkali metal or an ammonium salt, calcium-sensitive carrageenan in the form of an alkali metal or an ammonium salt in an amount equal to from about 30 to 155% by weight based on the weight of said potassium-sensitive carrageenan, and a non-toxic, water-soluble potassium salt other than potassium carrageenate in an amount equal to from about 10 to 110% by weight based on the weight of said potassium-sensitive carrageenan, said gel geing free of polyvalent metal cations in amount more than about 0.01% by weight based on the combined weights of carrageenan or carrageenans present and said potassium salt.
Claim 15
Dependent Claim
24 words
A gel as set forth in claim 10 which also comprises a sweetening agent and a free organic acid to impart a tart flavor.
Claim 16
Dependent Claim
15 words
A gel as set forth in claim 10 wherein said potassium salt is potassium citrate.
References Cited (Backward Citations)
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Cited
US2864706A
Cited
US3342612A
Cited
US3445243A
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US3502483A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |