Patent US3322771A successfully refreshed from Google Patents.
US3322771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intermediates for preparing thebaine derivatives
Assignee: —
•
Filing: —
•
Granted: 1967-05-30
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Expires: 1984-05-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:01
CPC Classifications
C; C07; C07D; C07D489/00; C07D489/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
6 words
A CHEMICAL COMPOUND OF THE STRUCTURE:
Claim 2
Dependent Claim
6 words
A CHEMICAL COMPOUND OF THE STRUCTURE:
Claim 3
Dependent Claim
22 words
A CHEMICAL COMPOUND OF THE STRUCTURE OF CLAIM 1 IN WHICH R IS METHYL AND R'' IS TERT-BUTOXYCARBONYL, AND COMPOUND BEING N-(TERT-BUTOXYCARBONYL)-DITHYDRONORCODEINONE.
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) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |