US2631172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of aryl haloalkanes
Assignee: Universal Oil Products Co
•
Filing: 1948-01-29
•
Granted: 1953-03-10
•
Expires: 1968-01-29
Abstract
No abstract record available.
Inventors
- 👤 Schmerling Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:52
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C17/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A PROCESS FOR PREPARING AN ARYL CHLOROALKANE WHICH COMPRISES REACTING A BENZENE HYDROCARBON HAVING A REPLACEABLE NUCLEAR HYDROGEN ATOM AND 1,3-DICHLORO-3-METHYLBUTANE AT A TEMPERATURE OF FROM ABOUT -20* TO ABOUT 50* C. IN THE PRESENCE OF ALUMINUM CHLORIDE DISSOLVED IN A NITROHYDROCARBON.
Claim 2
Dependent Claim
42 words
A PROCESS FOR PREPARING AN ARYL CHLOROALKANE WHICH COMPRISES REACTING A BENZENE HYDROCARBON HAVING A REPLACEABLE NUCLEAR HYDROGEN ATOM AND 1,3-DICHLORO-3-METHYLBUTANE AT A TEMPERATURE OF FROM ABOUT -20* TO ABOUT 50* C. IN THE PRESENCE OF ALUMINUM CHLORIDE DISSOLVED IN A NITROHYDROCARBON.
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) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |