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US3278523A
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Process for preparing beta-lactam derivatives
Assignee: Hoechst AG
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Filing: 1965-04-06
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Granted: 1966-10-11
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Expires: 1985-04-06
Abstract
No abstract record available.
Inventors
- 👤 Biener Hans
- 👤 Albrecht Konrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:15
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/08; C08G69/14; C08G69/22
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
10 words
A PROCESS FOR PREPARING A B-LACTAM DERIVATING OF THE FORMULA
Claim 2
Dependent Claim
10 words
A PROCESS FOR PREPARING A B-LACTAM DERIVATING OF THE FORMULA
Claim 3
Dependent Claim
10 words
A PROCESS FOR PREPARING A B-LACTAM DERIVATIVE OF THR FORMULA
Claim 4
Dependent Claim
10 words
A PROCESS FOR PREPARING A B-LACTAM DERIVATIVE OF THR FORMULA
References Cited (Backward Citations)
DE941847C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |