US2582253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic estrogens
Assignee: Pharmacia and Upjohn Co
•
Filing: 1949-09-26
•
Granted: 1952-01-15
•
Expires: 1969-09-26
Abstract
No abstract record available.
Inventors
- 👤 John A Hogg
- 👤 Alan H Nathan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:49
CPC Classifications
C; C07; C07C; C07C59/00; C07C59/40; C07C59/58; C07C59/64; C07C2601/00; C07C2601/12; C07C2601/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 2-METHYL-3-ETHYL-4-(PARA-ANISYL)-$3CYCLOHEXENECARBOXYLIC ACID, AND 2-METHYL-3ETHYL-4-(PARA-ANISYL)-$4-CYCLOHEXENCARBOXYLIC ACID, AND ALKALI-METAL SALTS THEREOF.
Claim 2
Dependent Claim
17 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 2-METHYL-3-ETHYL-4-(PARA-ANISYL)-$3CYCLOHEXENECARBOXYLIC ACID, AND 2-METHYL-3ETHYL-4-(PARA-ANISYL)-$4-CYCLOHEXENCARBOXYLIC ACID, AND ALKALI-METAL SALTS THEREOF.
References Cited (Backward Citations)
US2496064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |