US3300529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylenesulfonamides and method of preparing same
Assignee: Wyeth Holdings LLC
•
Filing: 1964-01-13
•
Granted: 1967-01-24
•
Expires: 1984-01-13
Abstract
No abstract record available.
Inventors
- 👤 Berkelhammer Gerald
- 👤 Richard W Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:08
CPC Classifications
C; C07; C07C; C07C311/00; C07C311/01; C07C311/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A METHOD WHICH COMPRISES REACTING A B-HALO-ETHANESULFONYL HALIDE WITH ONE MOLAR EQUIVALENT OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKYL AMINE HAVING FROM 1 TO 20 CARBON ATOMS, DI-ALKYL AMINE IN WHICH EACH ALKYL HAS FROM 2 TO 20 CARBON ATOMS, ALKENYL AMINE HAVING FROM 3 TO 20 CARBON ATOMS, DI-ALKENYL AMINE IN WHICH EACH ALKENYL HAS FROM 3 TO 20 CARBON ATOMS, AND BENZYLAMINE AT A TEMPERATURE IN THE RANGE OF 40* C. TO -80* C. AND IN THE PRESENCE OF AN AMINE HYDROHALIDE ACCEPTOR, AND RECOVERING THE RESULTING CORRESPONDING ETHYLENESULFONAMIDE.
Claim 2
Independent Claim
94 words
A METHOD WHICH COMPRISES REACTING A B-HALO-ETHANESULFONYL HALIDE WITH ONE MOLAR EQUIVALENT OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKYL AMINE HAVING FROM 1 TO 20 CARBON ATOMS, DI-ALKYL AMINE IN WHICH EACH ALKYL HAS FROM 2 TO 20 CARBON ATOMS, ALKENYL AMINE HAVING FROM 3 TO 20 CARBON ATOMS, DI-ALKENYL AMINE IN WHICH EACH ALKENYL HAS FROM 3 TO 20 CARBON ATOMS, AND BENZYLAMINE AT A TEMPERATURE IN THE RANGE OF 40* C. TO -80* C. AND IN THE PRESENCE OF AN AMINE HYDROHALIDE ACCEPTOR, AND RECOVERING THE RESULTING CORRESPONDING ETHYLENESULFONAMIDE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |