Patent US2058141A successfully refreshed from Google Patents.
Patent US2831018A successfully refreshed from Google Patents.
US2831018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of ester amides
Assignee: BASF SE
•
Filing: 1956-05-01
•
Granted: 1958-04-15
•
Expires: 1976-05-01
Abstract
No abstract record available.
Inventors
- 👤 Trieschmann Hans Georg
- 👤 Reuter Lothar
- 👤 Arend Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:32
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A METHOD OF MANUFACTURING AN ESTER AMIDE WHICH COMPRISES REACTING A BASIC REACTING ETHYLENE AMINE SUBSTITUTED ON THE NITROGEN ATOM BY A HYDROCARBON RADICAL SELECTED FROM THE GROUP CONSISTING OF ALKYL, CYCLOALKYL,, ARYL AND ARALKYL RADICALS CONTAINING 1-18 CARBON ATOMS WITH AN ANHYDRIDE OF AN ALKANOIC ACID CONTAINING FROM 2 TO 5 CARBON ATOMS IN ITS MOLECULE.
Claim 2
Independent Claim
57 words
A METHOD OF MANUFACTURING AN ESTER AMIDE WHICH COMPRISES REACTING A BASIC REACTING ETHYLENE AMINE SUBSTITUTED ON THE NITROGEN ATOM BY A HYDROCARBON RADICAL SELECTED FROM THE GROUP CONSISTING OF ALKYL, CYCLOALKYL,, ARYL AND ARALKYL RADICALS CONTAINING 1-18 CARBON ATOMS WITH AN ANHYDRIDE OF AN ALKANOIC ACID CONTAINING FROM 2 TO 5 CARBON ATOMS IN ITS MOLECULE.
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) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |