Patent US2633468A successfully refreshed from Google Patents.
US2633468A
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Benzooxaheterocyclic bases and acid addition salts thereof
Assignee: Eli Lilly and Co
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Filing: 1951-07-26
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Granted: 1953-03-31
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Expires: 1971-07-26
Abstract
No abstract record available.
Inventors
- 👤 Pohland Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:45
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/77; C07D307/78; C07D307/79; C07D307/92; C07D311/00; C07D311/02; C07D311/04; C07D311/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A MEMBER OF THE GROUP CONSISTING OF A BENZOOXAHETEROCYCLIC BASE AND ITS ACID ADDITION SALTS, SAID BASE BEING REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
22 words
A MEMBER OF THE GROUP CONSISTING OF A BENZOOXAHETEROCYCLIC BASE AND ITS ACID ADDITION SALTS, SAID BASE BEING REPRESENTED BY THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |