US2774762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dihydroisocodeine
Assignee: New York Quinine and Chemical Works Inc
•
Filing: 1950-10-18
•
Granted: 1956-12-18
•
Expires: 1970-10-18
Abstract
No abstract record available.
Inventors
- 👤 Manuel M Baizer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:01
CPC Classifications
C; C07; C07D; C07D489/00; C07D489/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
IN THE MANUFACTURE OF DIHYDROISOCODEINE THE STEP WHICH COMPRISES CAUSING DIHYDROCODEINE TO REACT IN TOLUENE WOTH ALUMINUMISOPROPOXIDE.
Claim 2
Dependent Claim
17 words
IN THE MANUFACTURE OF DIHYDROISOCODEINE THE STEP WHICH COMPRISES CAUSING DIHYDROCODEINE TO REACT IN TOLUENE WOTH ALUMINUMISOPROPOXIDE.
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) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |