US3887589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2,5-Diethyl-4-hydroxy-2,3,-dihydrofuran-3-one
Assignee: Lever Brothers Co
•
Filing: 1972-05-23
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Granted: 1975-06-03
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Expires: 1992-05-23
Abstract
Abstract The invention relates to flavour improvers for bakery products. The improved flavour results from the imcorporation, preferably before baking of a small amount of a 4-hydroxy-2,3-dihydrofuran3-one of the general formula: IN WHICH R1 and R2 represent lower alkyl groups containing 1 or 2 carbon atoms.
Inventors
- 👤 Adolf Jan Eykelboom
- 👤 Christiaan Herman The Tonsbeek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:02
CPC Classifications
A; A21; A21D; A21D2/00; A21D2/08; A21D2/14; A23; A23D; A23D7/00; A23D7/005; A23D7/0056; A23L; A23L27/00; A23L27/20; A23L27/205; A23L27/2052
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A COMPOUND HAVING FLAVOR OF CARAMEL WITH THE STRUCTURE 2,5-DIETHYL-4-HYDROXY-2,3-DIHYDROFURAN-3-ONE.
Claim 2
Dependent Claim
10 words
A COMPOUND HAVING FLAVOR OF CARAMEL WITH THE STRUCTURE 2,5-DIETHYL-4-HYDROXY-2,3-DIHYDROFURAN-3-ONE.
References Cited (Backward Citations)
US3576014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |