Patent US3401192A successfully refreshed from Google Patents.
US3401192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of 5h-dibenzo [a, d] cycloheptene
Assignee: Merck and Co Inc
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Filing: 1964-07-20
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Granted: 1968-09-10
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Expires: 1984-07-20
Abstract
No abstract record available.
Inventors
- 👤 Kollonitsch Janos
- 👤 Roger J Tull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:38
CPC Classifications
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Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A COMPOUND OF THE FOLLOWING STRUCTURAL FORMULA:
Claim 2
Dependent Claim
7 words
A COMPOUND OF THE FOLLOWING STRUCTURAL FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |