US3322749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of penicillanic acid and cephalosporanic acid
Assignee: Bristol Myers Co
•
Filing: 1965-07-21
•
Granted: 1967-05-30
•
Expires: 1985-07-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Leonard Bruce Crast
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:25
CPC Classifications
C; C07; C07D; C07D501/00; C07D501/14; C07D501/16; C07D501/20; A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/54; A61K31/542; A61K31/545; C07D499/00; C07D499/21; C07D499/44; C07D499/46
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
THE ACID OF THE FORMULA
Claim 2
Dependent Claim
5 words
THE ACID OF THE FORMULA
Claim 3
Dependent Claim
5 words
A COMPOUND HAVING THE FORMULA
Claim 4
Dependent Claim
5 words
A 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) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |