US3906005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-Nitrochromones
Assignee: Warner Lambert Co LLC
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Filing: 1974-04-11
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Granted: 1975-09-16
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Expires: 1994-04-11
Abstract
Abstract 3-nitrochromones are disclosed. These chromones have the following structural formula: WHEREIN X is hydrogen, halogen, nitro, phenyl, acetyl or methylsulfonyl. These compounds are useful as antifungal agents.
Inventors
- 👤 Sylvester Klutchko
- 👤 Strandtmann Maximilan Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:57
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; C07D311/04; C07D311/22
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
9 words
A compound according to claim 1 which is 6-chloro-3-nitrochromone.
Claim 4
Dependent Claim
9 words
A compound according to claim 1 which is 6-bromo-3-nitrochromone.
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) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |