US2557762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Long chain tertiary alkyl aminepenicillin salts and preparation thereof
Assignee: Parke Davis and Co LLC
•
Filing: 1947-07-09
•
Granted: 1951-06-19
•
Expires: 1967-07-09
Abstract
No abstract record available.
Inventors
- 👤 Albert L Rawlins
- 👤 Jr Harry M Crooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:15
CPC Classifications
C; C07; C07D; C07D499/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A PENICILLIN SALT HAVING THE FORMULA
Claim 2
Dependent Claim
6 words
A PENICILLIN SALT HAVING THE FORMULA
References Cited (Backward Citations)
US2493625A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-18 | 1954-12-18 | 1955-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-18 | 1958-12-18 | 1959-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-18 | 1962-12-18 | 1963-06-19 | $7700.00 | Window Closed / Lapsed |