US3686319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2,4,6-trihydroxy chalcone derivatives
Assignee: Individual
•
Filing: 1970-03-05
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Granted: 1972-08-22
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Expires: 1990-03-05
Abstract
Abstract 2,4,6-Trihydroxychalcone derivatives of the formula: WHEREIN R1 is hydrogen, halogen, hydroxy, nitro, alkoxy, amino, alkylamino or dialkylamino and R2 is halogen, jydroxy, alkoxy, nitro, amino, alkylamino or dialkylamino, each of the alkyl portions of the aforesaid alkoxy, alkylamino or dialkylamino radicals having one to three carbon atoms, have hypocholeretic, hypotensive and anti-coagulant properties.
Inventors
- 👤 Louis Lafon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:39
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/76; C07C49/84; C07C205/00; C07C205/45; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/72; C07C45/74; C07C49/82; C07C49/835
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A 2,4,6-trihydroxychalcone derivative according to claim 1 which is 2,4,6-trihydroxy-3''-nitrochalcone.
Claim 2
Dependent Claim
10 words
A 2,4,6-trihydroxychalcone derivative according to claim 1 which is 2,4,6-trihydroxy-4''-nitrochalcone.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |