Patent US3694512A successfully refreshed from Google Patents.
US3694512A
Expired / Lapsed
US
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Tetrahydro-cyclopropa naphthalenes
Assignee: ER Squibb and Sons LLC
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Filing: 1970-09-18
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Granted: 1972-09-26
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Expires: 1990-09-18
Abstract
Abstract Compounds are provided having the structure These compounds are useful as antiparasitic agents, antibacterial agents, and anti-inflammatory agents as well as surfact active agents.
Inventors
- 👤 Venkatachala L Narayanan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:25
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088; C07C; C07C39/00; C07C39/12; C07C39/17; C07C59/00; C07C59/40; C07C59/58; C07C59/72; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/06; C07C2603/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
22 words
Compounds in accordance with claim 1 wherein R5 is hydrogen, R, R1 and R2 are hydrogen, and R3 and R4 are chlorine.
References Cited (Backward Citations)
US2750427A
Cited
US3265743A
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US3265714A
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US3265744A
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US3265745A
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US3442640A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |