Patent US3515731A successfully refreshed from Google Patents.
US3515731A
Expired / Lapsed
US
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Antibacterial agents
Assignee: Pfizer Inc
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Filing: 1967-04-03
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Granted: 1970-06-02
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Expires: 1987-04-03
Abstract
No abstract record available.
Inventors
- 👤 Lloyd H Conover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:35
CPC Classifications
C; C07; C07C; C07C59/00; C07C59/40; C07C59/76; C07C59/90; C07C37/00; C07C37/01; C07C37/055; C07C45/00; C07C45/45; C07C45/46; C07C51/00; C07C51/347; C07C51/363; C07C59/42; C07C59/52; C07C59/58; C07C59/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3102914A
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US3201462A
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US3153067A
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US3167579A
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US3192235A
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US3192250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |