Patent US3245983A successfully refreshed from Google Patents.
US3245983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
6-(alpha, alpha, alpha-trisubstituted-acetamido) penicillanic acids and salts thereof
Assignee: Beecham Group PLC
•
Filing: 1961-08-28
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Granted: 1966-04-12
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Expires: 1981-08-28
Abstract
No abstract record available.
Inventors
- 👤 Doyle Frank Peter
- 👤 Nayler John Herbert Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:38
CPC Classifications
C; C07; C07D; C07D499/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
13 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN ACID HAVING THE FORMULA
Claim 2
Dependent Claim
13 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN ACID HAVING THE FORMULA
Claim 3
Dependent Claim
13 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN ACID HAVING THE FORMULA
Claim 4
Dependent Claim
13 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN ACID HAVING THE FORMULA
Claim 5
Dependent Claim
12 words
A MEMBER-SELECTED FROM THE GROUP CONSISTING OF AN ACID HAVING THE FORMULA
Claim 6
Dependent Claim
12 words
A MEMBER-SELECTED FROM THE GROUP CONSISTING OF AN ACID HAVING THE FORMULA
Claim 7
Dependent Claim
13 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN ACID HAVING THE FORMULA
Claim 8
Dependent Claim
13 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN ACID HAVING THE FORMULA
References Cited (Backward Citations)
US2941995A
Cited
US3079306A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |