US2554097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-long chain dialkyl-sulfenamides and preparation thereof
Assignee: Phillips Petroleum Co
•
Filing: 1947-09-04
•
Granted: 1951-05-22
•
Expires: 1967-09-04
Abstract
No abstract record available.
Inventors
- 👤 Lee O Edmonds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:39
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/46; C07D207/48
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
6 words
A SULFENAMIDE CORRESPONDING TO THE FORMULA
Claim 2
Dependent Claim
6 words
A SULFENAMIDE CORRESPONDING TO THE FORMULA
Claim 3
Dependent Claim
52 words
IN THE PROCESS OF PRODUCING A HIGH MOLECULAR WEIGHT ALKYL SULFENAMIDE WHICH COMPRISES REACTING AN ALKYL SULFENYL HALIDE HAVING AT LEAST TWO CARBON ATOMS IN THE ALKYL GROUP WITH DIALKYL AMINE HAVING AT LEAST 10 CARBON ATOMS IN EACH ALKYL GROUP, THE STEP WHICH COMPRISES REMOVING IMPURITIES BY EXTRACTING WITH HOT METHANOL.
Claim 4
Dependent Claim
52 words
IN THE PROCESS OF PRODUCING A HIGH MOLECULAR WEIGHT ALKYL SULFENAMIDE WHICH COMPRISES REACTING AN ALKYL SULFENYL HALIDE HAVING AT LEAST TWO CARBON ATOMS IN THE ALKYL GROUP WITH DIALKYL AMINE HAVING AT LEAST 10 CARBON ATOMS IN EACH ALKYL GROUP, THE STEP WHICH COMPRISES REMOVING IMPURITIES BY EXTRACTING WITH HOT METHANOL.
References Cited (Backward Citations)
US2268467A
Cited
USRE19286E
Cited
US2123082A
Cited
US2244075A
Cited
US2333468A
Cited
US2424921A
Cited
US2419283A
Cited
US2474237A
Cited
US2439734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |