US2710866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing 2-amino-4-hydroxy-6-bromomethylpteridine
Assignee: Gruppo Lepetit SpA
•
Filing: 1953-08-03
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Granted: 1955-06-14
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Expires: 1973-08-03
Abstract
No abstract record available.
Inventors
- 👤 Carrara Gino
- 👤 D Amato Vitangelo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:41
CPC Classifications
C; C07; C07D; C07D475/00; C07D475/02; C07D475/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
PROCESS FOR PREPARING 2-AMINO-4-HYDROXY-6-BROMOMETHYLPTERIDINE WHICH COMPRISES REACTING 2,4,5-TRIAMINO6-HYDROXYPRIMIDINE WITH 2,3-DIBROMOPROPIONALDEHYDE IN A TWO-PHASE REACTION MEDIUM COMPRISING WATER AND A SUBSTANTIALLY WATER-IMMISCIBLE ORGANIC SOLVENT.
Claim 2
Dependent Claim
23 words
PROCESS FOR PREPARING 2-AMINO-4-HYDROXY-6-BROMOMETHYLPTERIDINE WHICH COMPRISES REACTING 2,4,5-TRIAMINO6-HYDROXYPRIMIDINE WITH 2,3-DIBROMOPROPIONALDEHYDE IN A TWO-PHASE REACTION MEDIUM COMPRISING WATER AND A SUBSTANTIALLY WATER-IMMISCIBLE ORGANIC SOLVENT.
References Cited (Backward Citations)
AT171733B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-13 | 1958-12-13 | 1959-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-13 | 1962-12-13 | 1963-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-13 | 1966-12-13 | 1967-06-14 | $7700.00 | Window Closed / Lapsed |