US2938892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amides and process of preparing same with a monocarbodhmide
Assignee: Arthur D Little Inc
•
Filing: 1958-10-10
•
Granted: 1960-05-31
•
Expires: 1978-10-10
Abstract
No abstract record available.
Inventors
- 👤 John C Sheehan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:48
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K47/00; A61K47/30; A61K47/42; A61K9/00; A61K9/20; A61K9/28; A61K9/2806; A61K9/2833; A61K9/2873; A61K9/48; A61K9/4891; A61L; A61L17/00; A61L17/14; A61L17/145; A61Q; A61Q5/00; A61Q5/04; C; C07; C07C; C07C335/00; C07C335/04; C07C335/14; C07K; C07K1/00; C07K1/06; C07K1/061; C07K1/063; C07K5/00; C07K5/04; C07K5/06; C07K5/06008; C07K5/06017; C07K5/06026; C07K5/0606; C07K5/06069; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/30; G03C5/00; G03C5/26; G03C5/268; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
88 words
IN THE FORMATION OF AN AMIDE BY CONDENSING AN AMINE HAVING AT LEAST ONE HYDROGEN ATOM ATTACHED TO THE AMINO NITROGEN, WITH AN ORGANIC CARBOXYLIC ACID USING AS THE CONDENSING AGENT A MONOCARBODIIMIDE HAVING THE FORMULA R-N=C=N-R, WHEREIN EACH R IS A MONOVALENT RADICAL SELECTED FROM THE GROUP CONSISTING OF ALKYL RADICALS CONTAINING FROM 2 TO 12 CARBON ATOMS, MONOARYL-SUBSTITUTED LOWER ALKYL RADICALS, DI-LOWER ALKYLAMINO LOWER ALKYL RADICALS, AND MORPHOLINO-, PIPERIDYL- AND PYRIDYL-SUBSTITUTED LOWER ALKYL RADICALS, AND RECOVERING THE USED CONDENSING AGENT AND THE RESULTING AMIDE CONDENSATION PRODUCT.
Claim 2
Dependent Claim
88 words
IN THE FORMATION OF AN AMIDE BY CONDENSING AN AMINE HAVING AT LEAST ONE HYDROGEN ATOM ATTACHED TO THE AMINO NITROGEN, WITH AN ORGANIC CARBOXYLIC ACID USING AS THE CONDENSING AGENT A MONOCARBODIIMIDE HAVING THE FORMULA R-N=C=N-R, WHEREIN EACH R IS A MONOVALENT RADICAL SELECTED FROM THE GROUP CONSISTING OF ALKYL RADICALS CONTAINING FROM 2 TO 12 CARBON ATOMS, MONOARYL-SUBSTITUTED LOWER ALKYL RADICALS, DI-LOWER ALKYLAMINO LOWER ALKYL RADICALS, AND MORPHOLINO-, PIPERIDYL- AND PYRIDYL-SUBSTITUTED LOWER ALKYL RADICALS, AND RECOVERING THE USED CONDENSING AGENT AND THE RESULTING AMIDE CONDENSATION PRODUCT.
Claim 3
Dependent Claim
15 words
THE PROCESS OF CLAIM 1 WHEREIN BOTH AMIDE FORMING REACTANTS ARE PROVIDED BY A PROTEIN.
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) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |