Patent US2648709A successfully refreshed from Google Patents.
US2648709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methyl-chlorpropyl formamide
Assignee: Merck and Co Inc
•
Filing: 1951-01-31
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Granted: 1953-08-11
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Expires: 1971-01-31
Abstract
No abstract record available.
Inventors
- 👤 Sletzinger Meyer
- 👤 Tishler Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:15
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
1 words
METHYLFORMAMIDO-2-CHLOROPROPANE.
Claim 2
Dependent Claim
1 words
METHYLFORMAMIDO-2-CHLOROPROPANE.
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) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |