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US3912767A
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Novel sulfonate esters of 2-hydroxy-3-(methylthio)-1,4-naphthoquinone
Assignee: Wyeth Holdings LLC
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Filing: 1974-10-21
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Granted: 1975-10-14
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Expires: 1994-10-21
Abstract
Abstract This disclosure describes novel sulfonate esters of 2-hydroxy-3(methylthio)-1,4-naphthoquinone having antibacterial and antifungal activity.
Inventors
- 👤 Jr Joseph William Marisco
- 👤 Leon Goldman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:31
CPC Classifications
C; C07; C07C; C07C323/00; C07C323/22; C07C2602/00; C07C2602/02; C07C2602/04; C07C2602/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
4 words
COMPOUNDS OF THE FORMULA:
Claim 2
Dependent Claim
4 words
COMPOUNDS OF THE FORMULA:
Claim 3
Dependent Claim
11 words
The compound in accordance with claim 1 wherein R is methyl.
Claim 4
Dependent Claim
11 words
The compound in accordance with claim 1 wherein R is ethyl.
Claim 5
Dependent Claim
11 words
The compound in accordance with claim 1 wherein R is isopropyl.
Claim 6
Dependent Claim
11 words
The compound in accordance with claim 1 wherein R is phenyl.
Claim 7
Dependent Claim
11 words
The compound in accordance with claim 1 wherein R is p-chlorophenyl.
Claim 8
Dependent Claim
11 words
The compound in accordance with claim 1 wherein R is p-bromophenyl.
Claim 9
Dependent Claim
11 words
The compound in accordance with claim 1 wherein R is p-tolyl.
Claim 10
Dependent Claim
11 words
The compound in accordance with claim 1 wherein R is o-tolyl.
Claim 11
Dependent Claim
11 words
The compound in accordance with claim 1 wherein R is o-ethylphenyl.
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) | 1978-10-13 | 1979-04-14 | 1979-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-13 | 1983-04-14 | 1983-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-13 | 1987-04-14 | 1987-10-14 | $7700.00 | Window Closed / Lapsed |