US2677706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of n substituted formamides
Assignee: Commercial Solvents Corp
•
Filing: 1951-08-16
•
Granted: 1954-05-04
•
Expires: 1971-08-16
Abstract
No abstract record available.
Inventors
- 👤 Marcello T Giachino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:58
CPC Classifications
C; C07; C07C; C07C233/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A PROCESS FOR THE PRODUCTION OF N-SUBSTITUTED FORMAMIDES HAVING THE FORMULA
Claim 2
Dependent Claim
11 words
A PROCESS FOR THE PRODUCTION OF N-SUBSTITUTED FORMAMIDES HAVING THE FORMULA
References Cited (Backward Citations)
US1777777A
Cited
US1567312A
Cited
US2204371A
Cited
US2310478A
Cited
FR879486A
Cited
US2422631A
Cited
US2479205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |