US3073851A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formamidines of primary amines
Assignee: F Hoffmann La Roche AG
•
Filing: 1957-12-04
•
Granted: 1963-01-15
•
Expires: 1977-12-04
Abstract
No abstract record available.
Inventors
- 👤 Steiger Norbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:53
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/74; C07D215/00; C07D215/02; C07D215/16; C07D215/38; C07D215/40; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/32; C07D239/42; C07D239/46; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/40; C07D251/54; C07D251/70; C07D261/00; C07D261/02; C07D261/06; C07D261/10; C07D261/14; C07D277/00; C07D277/02; C07D277/20; C07D277/32; C07D277/38; C07D277/42; C07D277/58; C07D277/60; C07D277/62; C07D277/68; C07D277/82; C07D295/00; C07D295/16; C07D295/18; C07D295/195; C07F; C07F9/00; C07F9/66; C07F9/70; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/205
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
11 words
A MEMBER OF THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
11 words
A MEMBER OF THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA
Claim 3
Dependent Claim
65 words
A PROCESS FOR THE PRODUCTION OF FORMAMIDINES WHICH COMPRISES REACTING AT A TEMPERATURE BETWEEN ABOUT ROOM TEMPERATURE AND 100* C. A CYCLIC PRIMARY AMINE, CONTAINING DIRECTLY ATTACHED TO THE AMINO GROUP AN UNSATURATED CYCLIC RADICAL WITH AT LEAST 5 CARBON ATOMS AND AN ELECTRONEGATIVE SUBSTITUENT THEREON, WITH AT LEAST ONE EQUIVALENT FOR EACH REACTIVE AMINO GROUP IN SAID AMINE OF THE FORMAMIDE HAVING THE FORMULA
Claim 4
Dependent Claim
65 words
A PROCESS FOR THE PRODUCTION OF FORMAMIDINES WHICH COMPRISES REACTING AT A TEMPERATURE BETWEEN ABOUT ROOM TEMPERATURE AND 100* C. A CYCLIC PRIMARY AMINE, CONTAINING DIRECTLY ATTACHED TO THE AMINO GROUP AN UNSATURATED CYCLIC RADICAL WITH AT LEAST 5 CARBON ATOMS AND AN ELECTRONEGATIVE SUBSTITUENT THEREON, WITH AT LEAST ONE EQUIVALENT FOR EACH REACTIVE AMINO GROUP IN SAID AMINE OF THE FORMAMIDE HAVING THE FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |