US2705239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Estrogenic compounds
Assignee: Nepera Chemical Co Inc
•
Filing: 1953-05-11
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Granted: 1955-03-29
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Expires: 1973-05-11
Abstract
No abstract record available.
Inventors
- 👤 Max N Huffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:11
CPC Classifications
C; C07; C07J; C07J1/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
THE ESTROGENIC COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
6 words
THE ESTROGENIC COMPOUND HAVING 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) | 1958-03-28 | 1958-09-27 | 1959-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-28 | 1962-09-27 | 1963-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-28 | 1966-09-27 | 1967-03-29 | $7700.00 | Window Closed / Lapsed |