US4082858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweetening compound, method of recovery, and use thereof
Assignee: Suzuki F K International Inc
•
Filing: 1976-06-02
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Granted: 1978-04-04
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Expires: 1996-06-02
Abstract
Abstract A sweetening compound is recovered from Stevia rebaudiana plant material in the form of colorless crystals having 450 times the sweetness of sucrose. Sweetened products for oral ingestion are provided by admixing the sweetening compound with a foodstuff or a pharmaceutical. The sweetening compound is recovered from the plant material by extraction with water, concentration, extraction with an alkanol, chromatography, and collection of fractions rich in the compound, preferably followed by concentration of the rich fractions and recrystallization of the product.
Inventors
- 👤 Toyoshige Morita
- 👤 Isamu Fujita
- 👤 Junichi Iwamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:30
CPC Classifications
A; A23; A23L; A23L27/00; A23L27/30; A23L27/10; A23L27/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
18 words
A substantially pure sweetening compound in the form of colorless crystals, said compound having the structural formula: ##STR2##
Claim 2
Dependent Claim
18 words
A substantially pure sweetening compound in the form of colorless crystals, said compound having the structural formula: ##STR2##
Claim 3
Dependent Claim
23 words
A sweetened product for oral ingestion which comprises a foodstuff and an effective amount of the sweetening compound of claim 1 admixed therewith.
Claim 4
Dependent Claim
20 words
A method of sweetening a foodstuff which comprises admixing therewith an effective amount of the sweetening compound of claim 1.
Claim 5
Dependent Claim
13 words
A product as defined in claim 2 and wherein said foodstuff is chocolate.
Claim 6
Dependent Claim
13 words
A product as defined in claim 2 and wherein said foodstuff is tea.
Claim 7
Dependent Claim
13 words
A method as defined in claim 3, and wherein said foodstuff is chocolate.
References Cited (Backward Citations)
US3723410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-03 | 1981-10-03 | 1982-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-03 | 1985-10-03 | 1986-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-03 | 1989-10-03 | 1990-04-04 | $7700.00 | Window Closed / Lapsed |