US3201424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of 1, 3, 11, 12-tetrahydroxynaphthacene and 1, 3, 6, 11-tetrahydroxynaphtacene-5, 12-quinone
Assignee: Wyeth Holdings LLC
•
Filing: 1962-10-29
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Granted: 1965-08-17
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Expires: 1982-10-29
Abstract
No abstract record available.
Inventors
- 👤 Mccormick Jerry Robert Daniel
- 👤 Reichenthal Jules
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:53
CPC Classifications
C; C07; C07C; C07C233/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
78 words
A COMPOUND OF THE FORMULA: 1,3,11,12-TETRA(HO-),2-R2,4-R4,5-R7,7-R7,8-R8,9-R9,10-R10WHEREIN R2 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, CARBOXAMIDO AND N-(LOWER ALKYL) CARBOXAMIDO, R4 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND DIMETHYLAMINO, R5 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, LOWER ALKOXY AND LOWER ALKYL, AND R7, R8, R9 AND R10 ARE EACH SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, HALOGEN, HYDROXY, LOWER ALKOXY, LOWER ALKYL, AMINO, MONO(LOWER ALKYL) AMINO, DI(LOWER ALKYL) AMINO, NITRO, NITROSO, THIOCYANO AND MERCAPTO.
Claim 2
Dependent Claim
78 words
A COMPOUND OF THE FORMULA: 1,3,11,12-TETRA(HO-),2-R2,4-R4,5-R7,7-R7,8-R8,9-R9,10-R10WHEREIN R2 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, CARBOXAMIDO AND N-(LOWER ALKYL) CARBOXAMIDO, R4 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND DIMETHYLAMINO, R5 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, LOWER ALKOXY AND LOWER ALKYL, AND R7, R8, R9 AND R10 ARE EACH SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, HALOGEN, HYDROXY, LOWER ALKOXY, LOWER ALKYL, AMINO, MONO(LOWER ALKYL) AMINO, DI(LOWER ALKYL) AMINO, NITRO, NITROSO, THIOCYANO AND MERCAPTO.
Claim 3
Dependent Claim
77 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THOSE OF THE FORMULA: 1,3,6,11-TETRA(HO-),2-R2,4-R4,5,12-DI(O=),7-R7,8-R8,9-R9, NAPHTHACENE 10-R10-NAPHTHACENE WHEREIN R2 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, CARBOXAMIDO AND N-(LOWER ALKYL) CARBOXAMIDO, R4 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND DIMETHYLAMINO, AND R7, R8, R9 AND R10 ARE EACH SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, HALOGEN, HYDROXY, LOWER ALKOXY, LOWER ALKYL, AMINO, MONO-(LOWER ALKYL) AMINO, DI-(LOWER ALKYL) AMINO, NITRO, NITROSO, THIOCYANO AND MERCAPTO, AND TAUTOMERS THEREOF.
Claim 4
Dependent Claim
77 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THOSE OF THE FORMULA: 1,3,6,11-TETRA(HO-),2-R2,4-R4,5,12-DI(O=),7-R7,8-R8,9-R9, NAPHTHACENE 10-R10-NAPHTHACENE WHEREIN R2 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, CARBOXAMIDO AND N-(LOWER ALKYL) CARBOXAMIDO, R4 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND DIMETHYLAMINO, AND R7, R8, R9 AND R10 ARE EACH SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, HALOGEN, HYDROXY, LOWER ALKOXY, LOWER ALKYL, AMINO, MONO-(LOWER ALKYL) AMINO, DI-(LOWER ALKYL) AMINO, NITRO, NITROSO, THIOCYANO AND MERCAPTO, AND TAUTOMERS THEREOF.
References Cited (Backward Citations)
US3074975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |