US3097137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vincaleukoblastine
Assignee: Canadian Patents and Development Ltd
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Filing: 1960-05-19
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Granted: 1963-07-09
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Expires: 1980-05-19
Abstract
No abstract record available.
Inventors
- 👤 Charles T Beer
- 👤 James H Cutts
- 👤 Robert L Noble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:39
CPC Classifications
A; A61; A61K; A61K31/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A MEMBER OF THE GROUP CONSISTING OF VINCALEUKOBLASTINE AND ITS NONTOXIC ACID ADDITION SALTS, SAID VINCALUKOBLASTINE BEING IN PURE STATE A WHITE, MICROCRYSTALLINE COMPOUND WHICH MELTS AT ABOUT 201-211*C., SHOWING UPON ANALYSIS THE PRESENCE OF 68.15 PERCENT CARBON, 7.44 PERCENT HYDROGEN 6.65 PERCENT NITROGEN, AND 18.05 PERCENT OXYGEN, THE ANALYTICAL DATA ESTABLISHING THE MOLECULAR FORMULA C46H58O9N4, AN ULTRAVIOLET ABSORPTION SPECTRUM IN ETHANOL SHOWING MAXIMA AT 214 MU AND 259 MU WITH SHOULDERS AT 288, 296 AND 310 MU, A SPECIFIC ROTATION IN METHANOL OF (A)D23* =-32* (C.=0.88), TWO TITRATABLE GROUPS OF PK'' A 5.0 AND 7.0 IN DIMETHYLFORMAMIDE-WATER SOLUTION (2:1 V./V.) AND EXHIBITING IN CHLOROFORM SOLUTION IN THE INFRARED REGION OVER THE RANGE OF ABOUT 2-16 MICRONS CHARACTERISTIC PEAKS AT THE FOLLOWING WAVELENGTHS EXPRESSED IN MICRONS: 2.82, 2.91, 3.41, 3.51, 5.75, 6.19, 6.27, 6.66, 6.86, 6.98, 7.30, 7.52, 7.75, 8.15, 8.57, 8.75, 8.87, 9.04, 9.17, 9.28, 9.42, 9.63, 9.92, 10.22, 10.45, 10.58, 10.85, 11.15, 11.32, 11.50, 11.72, 12.00, 12.20.
Claim 2
Dependent Claim
159 words
A MEMBER OF THE GROUP CONSISTING OF VINCALEUKOBLASTINE AND ITS NONTOXIC ACID ADDITION SALTS, SAID VINCALUKOBLASTINE BEING IN PURE STATE A WHITE, MICROCRYSTALLINE COMPOUND WHICH MELTS AT ABOUT 201-211*C., SHOWING UPON ANALYSIS THE PRESENCE OF 68.15 PERCENT CARBON, 7.44 PERCENT HYDROGEN 6.65 PERCENT NITROGEN, AND 18.05 PERCENT OXYGEN, THE ANALYTICAL DATA ESTABLISHING THE MOLECULAR FORMULA C46H58O9N4, AN ULTRAVIOLET ABSORPTION SPECTRUM IN ETHANOL SHOWING MAXIMA AT 214 MU AND 259 MU WITH SHOULDERS AT 288, 296 AND 310 MU, A SPECIFIC ROTATION IN METHANOL OF (A)D23* =-32* (C.=0.88), TWO TITRATABLE GROUPS OF PK'' A 5.0 AND 7.0 IN DIMETHYLFORMAMIDE-WATER SOLUTION (2:1 V./V.) AND EXHIBITING IN CHLOROFORM SOLUTION IN THE INFRARED REGION OVER THE RANGE OF ABOUT 2-16 MICRONS CHARACTERISTIC PEAKS AT THE FOLLOWING WAVELENGTHS EXPRESSED IN MICRONS: 2.82, 2.91, 3.41, 3.51, 5.75, 6.19, 6.27, 6.66, 6.86, 6.98, 7.30, 7.52, 7.75, 8.15, 8.57, 8.75, 8.87, 9.04, 9.17, 9.28, 9.42, 9.63, 9.92, 10.22, 10.45, 10.58, 10.85, 11.15, 11.32, 11.50, 11.72, 12.00, 12.20.
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) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |