Patent US4025535A successfully refreshed from Google Patents.
US4025535A
Expired / Lapsed
US
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Sulfoalkylated flavanone sweeteners
Assignee: Dynapol Shareholders Liquidating Trust
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Filing: 1976-02-13
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Granted: 1977-05-24
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Expires: 1996-02-13
Abstract
Abstract Flavanones represented by the formula ##STR1## wherein R is a lower alkyl of from one to three carbon atoms inclusive, n is an integer of from one to three inclusive and M is hydrogen or a physiologically acceptable metal cation, are disclosed. These materials are themselves useful as dietetic sweeteners as well as being direct intermediates for the preparation of useful dihydrochalcone sweeteners.
Inventors
- 👤 Guy A. Crosby
- 👤 Grant E. Dubois
- 👤 Ned M. Weinshenker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:10
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/70; C07C45/71; A; A23; A23L; A23L27/00; A23L27/30; C07C309/00; C07C45/62; C07C45/72; C07C45/74; C07D; C07D311/00; C07D311/02; C07D311/04; C07D311/22; C07D311/26; C07D311/28; C07D311/32; C07F; C07F1/00; C07F1/005; C07F3/00; C07F3/003
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
43 words
A flavanone compound represented by the structural formula ##STR21## wherein R is a lower alkyl of from one to three carbon atoms inclusive, n is an integer of from one to three inclusive and M is hydrogen or a physiologically acceptable metal cation.
Claim 2
Dependent Claim
43 words
A flavanone compound represented by the structural formula ##STR21## wherein R is a lower alkyl of from one to three carbon atoms inclusive, n is an integer of from one to three inclusive and M is hydrogen or a physiologically acceptable metal cation.
Claim 3
Dependent Claim
16 words
The compound of claim 1, wherein n has a value of 1 and R is methyl.
Claim 4
Dependent Claim
16 words
The compound of claim 1, wherein n has a value of 1 and R is ethyl.
Claim 5
Dependent Claim
16 words
The compound of claim 1, wherein n has a value of 1 and R is n-propyl.
Claim 6
Dependent Claim
16 words
The compound of claim 1, wherein n has a value of 2 and R is methyl.
Claim 7
Dependent Claim
16 words
The compound of claim 1, wherein n has a value of 2 and R is ethyl.
Claim 8
Dependent Claim
16 words
The compound of claim 1, wherein n has a value of 2 and R is n-propyl.
Claim 9
Dependent Claim
16 words
The compound of claim 1, wherein n has a value of 3 and R is methyl.
Claim 10
Dependent Claim
16 words
The compound of claim 1, wherein n has a value of 3 and R is ethyl.
Claim 11
Dependent Claim
16 words
The compound of claim 1, wherein n has a value of 3 and R is n-propyl.
Claim 12
Dependent Claim
10 words
The compound of claim 2, wherein M is potassium ion.
Claim 13
Dependent Claim
10 words
The compound of claim 2, wherein M is calcium ion.
Claim 14
Dependent Claim
10 words
The compound of claim 5, wherein M is potassium ion.
Claim 15
Dependent Claim
10 words
The compound of claim 5, wherein M is calcium ion.
Claim 16
Dependent Claim
10 words
The compound of claim 8, wherein M is potassium ion.
Claim 17
Dependent Claim
10 words
The compound of claim 8, wherein M is calcium ion.
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) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |