US4465629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method to increase color fastness of stabilized aloe vera
Assignee: Individual
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Filing: 1983-03-17
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Granted: 1984-08-14
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Expires: 2003-03-17
Abstract
Abstract A process for imparting color fastness to stabilized aloe vera gel. The process including the steps of admixing with a heated aloe vera gel the antioxidant effective to prevent oxidation of said gel, adjustment of the gel to a pH in the range of from about 3.0 to about 3.5 and cooling the admixed gel to 23° C. or lower in less than about 15 minutes.
Inventors
- 👤 Rex G. Maughan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:06
CPC Classifications
A; A61; A61Q; A61Q19/00; A61K; A61K36/00; A61K36/18; A61K36/88; A61K36/886; A61K47/00; A61K47/02; A61K8/00; A61K8/02; A61K8/04; A61K8/042; A61K8/18; A61K8/96; A61K8/97; A61K8/9783; A61K8/9789; A61K8/9794; A61K2800/00; A61K2800/40; A61K2800/52; A61K2800/522
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
102 words
A process for imparting color fastness to a stabilized aloe vera gel comprising: (a) heating clear gel which has been separated from the leaf of an aloe vera plant to a temperature in the range of from about 30° C. to about 70° C. for a sufficient period of time to kill bacteria; (b) adding to said gel an antioxidant in an amount effective to prevent oxidation of said gel; (c) cooling said aloe vera gel to about 23° C. or lower in less than 15 minutes; and (d) adjusting the pH of said gel to the range of 3.0 to 3.5.
Claim 2
Dependent Claim
102 words
A process for imparting color fastness to a stabilized aloe vera gel comprising: (a) heating clear gel which has been separated from the leaf of an aloe vera plant to a temperature in the range of from about 30° C. to about 70° C. for a sufficient period of time to kill bacteria; (b) adding to said gel an antioxidant in an amount effective to prevent oxidation of said gel; (c) cooling said aloe vera gel to about 23° C. or lower in less than 15 minutes; and (d) adjusting the pH of said gel to the range of 3.0 to 3.5.
Claim 3
Dependent Claim
30 words
The process of claim 1 wherein said antioxidant is selected from the group consisting of sodium sulfite, sodium bisulfite, sodium metabisulfite, calcium edetate, propyl gallate, and glycine, and combinations thereof.
Claim 4
Dependent Claim
23 words
The process of claim 2 wherein said antioxidant is present in an amount of from 0.01% to 0.1% by weight of said gel.
Claim 5
Dependent Claim
11 words
The process of claim 3 wherein said antioxidant is sodium bisulfite.
Claim 6
Dependent Claim
54 words
the process of claim 4 further comprising the step of admixing into said gel prior to cooling the following components: from 0% to about 0.5% by weight of sodium bicarbonate; from 0% to about 1.0% by weight of calcium phosphate, and from 0% to about 0.2% by weight of terta sodium ethylenediamine tetraacedic acid.
Claim 7
Dependent Claim
102 words
A process for imparting color fastness to a stabilized aloe vera gel comprising: (a) heating clear gel which has been separated from the leaf of an aloe vera plant to a temperature in the range of from about 45° C. to about 70° C. for a sufficient period of time to kill bacteria; (b) adding to said gel an antioxidant in an amount effective to prevent oxidation of said gel; (c) cooling said aloe vera gel to about 23° C. or lower in less than 10 minutes; and (d) adjusting the pH of said gel to the range of 3.3 to 3.5.
Claim 8
Dependent Claim
102 words
A process for imparting color fastness to a stabilized aloe vera gel comprising: (a) heating clear gel which has been separated from the leaf of an aloe vera plant to a temperature in the range of from about 45° C. to about 70° C. for a sufficient period of time to kill bacteria; (b) adding to said gel an antioxidant in an amount effective to prevent oxidation of said gel; (c) cooling said aloe vera gel to about 23° C. or lower in less than 10 minutes; and (d) adjusting the pH of said gel to the range of 3.3 to 3.5.
Claim 9
Dependent Claim
29 words
The process of claim 6 wherein said antioxidant is selected from the group consisting of sodium sulfite, sodium bisulfite, sodium metabisulfite, calcium edetate, propyl gallate, glycine, and combinations thereof.
Claim 10
Dependent Claim
23 words
The process of claim 7 wherein said antioxidant is present in an amount of from 0.01% to 0.1% by weight of said gel.
Claim 11
Dependent Claim
11 words
The process of claim 8 wherein said antioxidant is sodium bisulfite.
Claim 12
Dependent Claim
51 words
The process of claim 9 further comprising the step of admixing into said gel prior to cooling the following components: from 0.05% to 0.5% by weight of sodium bicarbonate; from 0.1% to 1.0% by weight of calcium phosphate, and from 0.001% to 0.2% by weight of tetra sodium ethylenediamine tetraacedic acid.
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) | 1987-08-14 | 1988-02-13 | 1988-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-14 | 1992-02-13 | 1992-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-14 | 1996-02-13 | 1996-08-14 | $7700.00 | Window Closed / Lapsed |