US3306934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
5-(aminopropylidene)-and 5-hydroxy-5-(aminopropyl)-3-dialkylsulfamoyl-5h-dibenzo[a,d] cycloheptenes
Assignee: Merck and Co Inc
•
Filing: 1962-09-24
•
Granted: 1967-02-28
•
Expires: 1982-09-24
Abstract
No abstract record available.
Inventors
- 👤 Edward L Engelhardt
- 👤 Marcia E Christy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:20
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/12; C07C; C07C309/00; C07C309/78; C07C309/86; C07C311/00; C07C311/01; C07C311/02; C07C311/09; C07C311/15; C07C311/20; C07C311/30; C07C311/37; C07D295/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE STRUCTURAL FORMULAE:
Claim 2
Dependent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE STRUCTURAL FORMULAE:
References Cited (Backward Citations)
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Cited
US2726265A
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US3084160A
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US3055890A
Cited
US2985653A
Cited
US3073847A
Cited
US3047571A
Cited
US3082210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |