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US3546211A
Expired / Lapsed
US
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Polycyclic b-lactams
Assignee: Research Corp
•
Filing: 1967-06-22
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Granted: 1970-12-08
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Expires: 1987-06-22
Abstract
No abstract record available.
Inventors
- 👤 Ajay K Bose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:38
CPC Classifications
C; C07; C07D; C07D205/00; C07D205/12; C07D499/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3194801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |