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US2861987A
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New diphenyl methane- and 1-aza-[2,3:5,6]-dibenzocy cloheptadiene derivatives, theiracid salts and quaternary salts and the production thereof
Assignee: Cilag AG
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Filing: 1956-12-27
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Granted: 1958-11-25
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Expires: 1976-12-27
Abstract
No abstract record available.
Inventors
- 👤 Martin Henry
- 👤 Habicht Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:03
CPC Classifications
C; C07; C07D; C07D223/00; C07D223/14; C07D223/18; C07D223/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A NEW CHEMICAL COMPOUND OF THE GROUP CONSISTING OF 1-AZA-(2,3:5,6)-DIBENZOCYCLOHEPTADIENE DERIVATIVES, AND HYDROCHLORIC ACID ADDITION SALTS OF SAID DERIVATIVES, SAID DERIVATIVES HAVING THE FORMULA
Claim 2
Dependent Claim
24 words
A NEW CHEMICAL COMPOUND OF THE GROUP CONSISTING OF 1-AZA-(2,3:5,6)-DIBENZOCYCLOHEPTADIENE DERIVATIVES, AND HYDROCHLORIC ACID ADDITION SALTS OF SAID DERIVATIVES, SAID DERIVATIVES HAVING THE 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) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |