US2650229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of 2:3-dihydro-4-methyltfuro(3:2-c) quinoline and preparation thereof
Assignee: Schenley Industries Inc
•
Filing: 1951-05-28
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Granted: 1953-08-25
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Expires: 1971-05-28
Abstract
No abstract record available.
Inventors
- 👤 Timmler Helmut
- 👤 Andersag Hans
- 👤 Breitner Stephan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:29
CPC Classifications
C; C07; C07D; C07D491/00; C07D491/12; C07D491/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
AS A NOVEL COMPOSITION OF MATTER, A CHEMICAL COMPOUND REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
13 words
AS A NOVEL COMPOSITION OF MATTER, A CHEMICAL COMPOUND 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) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |