US2949451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of thymidine and deoxyfluorouridine, and intermediates therefor
Assignee: F Hoffmann La Roche AG
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Filing: 1959-04-21
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Granted: 1960-08-16
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Expires: 1979-04-21
Abstract
No abstract record available.
Inventors
- 👤 Hoffer Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:21
CPC Classifications
C; C07; C07H; C07H19/00; C07H19/02; C07H19/04; C07H19/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A PROCESS OF MAKING 2-DEOXY-5-FLUOROURIDINE WHICH COMPRISES 3,5-DIAROYL-2-DEOXY-D-RIBOFURANOSYL HALIDE WITH MONO(5-FLOUROURACILY)MERCURY, THEREBY FORMING 1-(3'',5''-DIAROYL-2''-RIBOFURANOSYL)-5-FLUOROURACIL, AND HYDROLYZING THE LATTER
Claim 2
Dependent Claim
18 words
A PROCESS OF MAKING 2-DEOXY-5-FLUOROURIDINE WHICH COMPRISES 3,5-DIAROYL-2-DEOXY-D-RIBOFURANOSYL HALIDE WITH MONO(5-FLOUROURACILY)MERCURY, THEREBY FORMING 1-(3'',5''-DIAROYL-2''-RIBOFURANOSYL)-5-FLUOROURACIL, AND HYDROLYZING THE LATTER
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |