Patent US3153644A successfully refreshed from Google Patents.
US3153644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
16alpha, 17alpha-(2-halo-1-di-lower-alkylamino-2-haloalkylidenedioxy)-steroids and process for the preparation thereof
Assignee: Pharmacia and Upjohn Co
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Filing: 1962-07-31
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Granted: 1964-10-20
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Expires: 1982-07-31
Abstract
No abstract record available.
Inventors
- 👤 Donald E Ayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:03
CPC Classifications
C; C07; C07J; C07J71/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
4 words
COMPOUNDS OF THE FORMULA
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) | 1967-10-20 | 1968-04-20 | 1968-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-20 | 1972-04-20 | 1972-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-20 | 1976-04-20 | 1976-10-20 | $7700.00 | Window Closed / Lapsed |