Patent US2773080A successfully refreshed from Google Patents.
US2773080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
delta-pregnenes
Assignee: Wyeth Holdings LLC
•
Filing: 1955-06-30
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Granted: 1956-12-04
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Expires: 1975-06-30
Abstract
No abstract record available.
Inventors
- 👤 Bernstein Seymour
- 👤 Lenhard Robert Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:44
CPC Classifications
C; C07; C07J; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
A COMPOUND SELECTED FROM THOSE HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
9 words
A COMPOUND SELECTED FROM THOSE HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
US2707190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |