Patent US3464994A successfully refreshed from Google Patents.
US3464994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thebaine and dripavine derivatives and pharmaceutically acceptable salts thereof
Assignee: Reckitt and Sons Ltd
•
Filing: 1968-05-16
•
Granted: 1969-09-02
•
Expires: 1988-05-16
Abstract
No abstract record available.
Inventors
- 👤 Kenneth Walter Bentley
- 👤 Denis Geoffrey Hardy
- 👤 Alan Charles Brandon Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:56
CPC Classifications
C; C07; C07D; C07D489/00; C07D489/09; C07D489/10; C07D489/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |