US2516971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chloroethylation of alkylated benzene compounds
Assignee: Distillers Co Yeast Ltd
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Filing: 1946-10-17
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Granted: 1950-08-01
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Expires: 1966-10-17
Abstract
No abstract record available.
Inventors
- 👤 Galitzenstein Eugen Gottfried
- 👤 Salt Francis Edward
- 👤 Stanley Herbert Muggleton
- 👤 Weir Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:22
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C17/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A PROCESS FOR THE MANUFACTURE OF CHLOROETHYL-ALKYL BENZENES WHICH COMPRISES CONDENSING DI(ALPHA-CHLOROETHYL) ETHER WITH A POLYMETHYLSUBSTITUTED BENZENE IN THE PRESENCE OF ZINC CHLORIDE AT A TEMPERATURE BETWEEN -15*C. AND +15* C. THE REACTION MIXTURE BEING ADJUSTED TO CONTAIN NOT MORE THAN 50% BY WEIGHT OF WATER CALCULATED UPON THE WEIGHT OF ZINC CHLORIDE USED.
Claim 2
Dependent Claim
54 words
A PROCESS FOR THE MANUFACTURE OF CHLOROETHYL-ALKYL BENZENES WHICH COMPRISES CONDENSING DI(ALPHA-CHLOROETHYL) ETHER WITH A POLYMETHYLSUBSTITUTED BENZENE IN THE PRESENCE OF ZINC CHLORIDE AT A TEMPERATURE BETWEEN -15*C. AND +15* C. THE REACTION MIXTURE BEING ADJUSTED TO CONTAIN NOT MORE THAN 50% BY WEIGHT OF WATER CALCULATED UPON THE WEIGHT OF ZINC CHLORIDE USED.
References Cited (Backward Citations)
US1926314A
Cited
US2219873A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-31 | 1954-01-30 | 1954-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-31 | 1958-01-30 | 1958-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-31 | 1962-01-30 | 1962-08-01 | $7700.00 | Window Closed / Lapsed |