Patent US2749347A successfully refreshed from Google Patents.
US2749347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-phenylquinoline-3-aryl carbamates
Assignee: Chemo Puro Manuf Corp
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Filing: 1953-12-16
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Granted: 1956-06-05
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Expires: 1973-12-16
Abstract
No abstract record available.
Inventors
- 👤 Frank J Kreysa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:19
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/16; C07D215/48; C07D215/50; C07D215/52; C07D215/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
AN ANTIDIURETIC HAVING THE STRUCTURAL FORMULA:
Claim 2
Dependent Claim
6 words
AN ANTIDIURETIC HAVING THE STRUCTURAL FORMULA:
References Cited (Backward Citations)
US1773837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |