US4495213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble sweetening tablet
Assignee: Chimicasa GmbH
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Filing: 1982-09-30
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Granted: 1985-01-22
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Expires: 2002-09-30
Abstract
Abstract A sweetening tablet containing 70 to 95% of APM (L-aspartyl-L-phenylalanine methylester) with a particle size of from 0.01 to 0.4 mm, up to 1% of an auxiliary tabletting agent, and the rest a solubility accelerator which is a jellifier that swells in water and forms insulating layers enveloping the APM granules.
Inventors
- 👤 Erich Wolf
- 👤 Rolf Deininger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:50
CPC Classifications
A; A23; A23L; A23L27/00; A23L27/30; A23L27/31; A23L27/32
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
79 words
A compressed water-soluble sweetening tablet containing, on a dry weight basis: 70 to 95% of L-aspartyl-L-phenylalanine methylester as a sweetening agent, having a granular size of 0.01 to 0.4 mm, 0 to 1% of an auxiliary tabletting agent, and the rest comprising a water-swellable jellifier as a solubility accelerator, selected from the group consisting of cross-linked sodium carboxymethylcellulose and cross-linked polyvinyl pyrrolidone, wherein the granules of said sweetening agent are coated with a dried layer of said solubility accelerator.
Claim 2
Dependent Claim
79 words
A compressed water-soluble sweetening tablet containing, on a dry weight basis: 70 to 95% of L-aspartyl-L-phenylalanine methylester as a sweetening agent, having a granular size of 0.01 to 0.4 mm, 0 to 1% of an auxiliary tabletting agent, and the rest comprising a water-swellable jellifier as a solubility accelerator, selected from the group consisting of cross-linked sodium carboxymethylcellulose and cross-linked polyvinyl pyrrolidone, wherein the granules of said sweetening agent are coated with a dried layer of said solubility accelerator.
Claim 3
Dependent Claim
14 words
A tablet according to claim 1, wherein the solubility accelerator is cross-linked sodium carboxymethylcellulose.
Claim 4
Dependent Claim
14 words
A tablet according to claim 1, wherein the solubility accelerator is cross-linked polyvinyl pyrrolidone.
Claim 5
Dependent Claim
24 words
A tablet according to any one of claims 1 to 9 containing, on a dry weight basis: 75 to 80% of the L-aspartyl-L-phenylalanine methylester.
Claim 6
Dependent Claim
32 words
A tablet according to claim 1 containing, on a dry weight basis: 77.89% of the L-aspartyl-L-phenylalanine methylester, 21.64% of cross-linked sodium carboxymethylcellulose, and 0.47% of glycerin palmitostearate as the auxiliary tabletting agent.
References Cited (Backward Citations)
US29682A
Cited
USRE29682E
Cited
US4009291A
Cited
US4230687A
Cited
US4292336A
Cited
JPS5763068A
Cited
US4384004A
Cited
US4384004B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-22 | 1988-07-23 | 1989-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-22 | 1992-07-23 | 1993-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-22 | 1996-07-23 | 1997-01-22 | $7700.00 | Window Closed / Lapsed |