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US4440796A
Expired / Lapsed
US
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Cold soluble powdered tea extracts
Assignee: Nestec SA
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Filing: 1982-07-09
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Granted: 1984-04-03
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Expires: 2002-07-09
Abstract
Abstract A process for the production of a cold soluble powdered tea extract wherein a hot soluble powdered tea extract is treated with a mixture of from 25% to 65% by weight of a carboxylic acid and from 15% to 65% by weight of a carboxylic acid salt based on the weight of the hot soluble powdered tea extract and ground to the desired particle size.
Inventors
- 👤 Tito-Livio Lunder
- 👤 Corine-Madeleine Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:56
CPC Classifications
A; A23; A23F; A23F3/00; A23F3/16; A23F3/30; A23F3/34
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
74 words
A process for the production of a cold soluble powdered tea extract which comprises treating a hot soluble powdered tea extract with a mixture of from 25% to 65% by weight of an aliphatic di- or tri-carboxylic acid and from 15% to 65% by weight of an aliphatic di- or tri-carboxylic acid salt based on the weight of the hot soluble powdered tea extract and grinding the resultant mixture to the desired particle size.
Claim 2
Dependent Claim
74 words
A process for the production of a cold soluble powdered tea extract which comprises treating a hot soluble powdered tea extract with a mixture of from 25% to 65% by weight of an aliphatic di- or tri-carboxylic acid and from 15% to 65% by weight of an aliphatic di- or tri-carboxylic acid salt based on the weight of the hot soluble powdered tea extract and grinding the resultant mixture to the desired particle size.
Claim 3
Dependent Claim
12 words
The process of claim 1, wherein the carboxylic acid is citric acid.
Claim 4
Dependent Claim
30 words
The process of claim 1, wherein the amount of carboxylic acid used is from 35% to 55% by weight based on the weight of the hot soluble powdered tea extract.
Claim 5
Dependent Claim
31 words
The process of claim 1, wherein the amount of carboxylic acid salt used is from 25% to 55% by weight based on the weight of the hot soluble powdered tea extract.
Claim 6
Dependent Claim
33 words
The process of claim 1, wherein the proportion of the carboxylic acid to the carboxylic acid salt is from 0.5 to 2.5 parts by weight of acid per part by weight of salt.
Claim 7
Dependent Claim
57 words
The process of claim 1, wherein the mixture of ingredients, together with a wetting aid in an amount from 10 to 60 parts by weight per part by weight of the hot soluble powdered tea extract, is wetted with deionised water to form a homogeneous paste which is then dried and ground to the desired particle size.
Claim 8
Dependent Claim
14 words
The process of claim 6, wherein the wetting aid is sucrose, fructose or glucose.
Claim 9
Dependent Claim
29 words
The process of claim 6, wherein before being dried, the paste is extruded through a sieve whose meshes each have a diameter of from 1.5 mm to 3.0 mm.
Claim 10
Dependent Claim
20 words
The process of claim 6, wherein the paste is dried at a temperature of from 50° C. to 70° C.
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) | 1987-04-03 | 1987-10-03 | 1988-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-03 | 1991-10-03 | 1992-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-03 | 1995-10-03 | 1996-04-03 | $7700.00 | Window Closed / Lapsed |