US2666760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insoluble methyl-benzodiazepin salts of penicillin
Assignee: Wyeth Holdings LLC
•
Filing: 1951-07-06
•
Granted: 1954-01-19
•
Expires: 1971-07-06
Abstract
No abstract record available.
Inventors
- 👤 Gerard W Curtis
- 👤 Lorenzo Sylvio A De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:02
CPC Classifications
C; C07; C07D; C07D499/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A PENICILLIN SALT OF COMPOUND REPRESENTED BY THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
10 words
A PENICILLIN SALT OF COMPOUND REPRESENTED BY THE FOLLOWING FORMULA:
References Cited (Backward Citations)
US2515898A
Cited
US2558014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |