US2864834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pregnatetraenes and method of preparing the same
Assignee: Wyeth Holdings LLC
•
Filing: 1957-10-08
•
Granted: 1958-12-16
•
Expires: 1977-10-08
Abstract
No abstract record available.
Inventors
- 👤 Mendelsohn Harold
- 👤 Leland L Smith
- 👤 Victor E Origoni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:19
CPC Classifications
C; C07; C07J; C07J5/00; Y; Y10; Y10S; Y10S424/00; Y10S424/13
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
COMPOUNDS HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
5 words
COMPOUNDS HAVING THE GENERAL FORMULA:
Claim 3
Independent Claim
8 words
A METHOD OF PREPARING COMPOUNDS HAVING THE FORMULA:
Claim 4
Independent Claim
8 words
A METHOD OF PREPARING COMPOUNDS HAVING THE FORMULA:
References Cited (Backward Citations)
US2773080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |