US2622107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of alkyl chlorides
Assignee: Ethyl Corp
•
Filing: 1950-10-28
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Granted: 1952-12-16
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Expires: 1970-10-28
Abstract
No abstract record available.
Inventors
- 👤 George W Mattson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:18
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
IN A PROCESS OF PRODUCING AN ALKYL CHLORIDE BY THE REACTION OF AN ALCOHOL AND HYDROGEN CHLORIDE AT ELEVATED TEMPERATURE IN THE PRESENCE OF A CONCENTRATED SOLUTION OF METAL CHLORIDE CATALYST, THE IMPROVEMENT COMPRISING INTRODUCING A FOAM SUPPRESSING QUANTITY OF SULPHUR DIOXIDE INTO THE REACTION SPACE IN PROPORTIONS OF FROM 0.001 TO 0.01 MOLES PER MOLE OF HYDROGEN CHLORIDE.
Claim 2
Dependent Claim
59 words
IN A PROCESS OF PRODUCING AN ALKYL CHLORIDE BY THE REACTION OF AN ALCOHOL AND HYDROGEN CHLORIDE AT ELEVATED TEMPERATURE IN THE PRESENCE OF A CONCENTRATED SOLUTION OF METAL CHLORIDE CATALYST, THE IMPROVEMENT COMPRISING INTRODUCING A FOAM SUPPRESSING QUANTITY OF SULPHUR DIOXIDE INTO THE REACTION SPACE IN PROPORTIONS OF FROM 0.001 TO 0.01 MOLES PER MOLE OF HYDROGEN CHLORIDE.
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) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |