US2556271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of acetic acid
Assignee: Celanese Corp
•
Filing: 1947-09-30
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Granted: 1951-06-12
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Expires: 1967-09-30
Abstract
No abstract record available.
Inventors
- 👤 Groombridge Walter Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:54
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
PROCESS FOR THE PRODUCTION OF ACETIC ACID, WHICH COMPRISES SUBJECTING METHYL CHLORIDE TO REACTION WITH CARBON MONOXIDE AT A TEMPERATURE OF BETWEEN 180* AND 350* C. UNDER A TOTAL PRESSURE OF BETWEEEN 100 AND 500 ATMOSPHERE AN DIN THE PRESENCE OF WATER, NICKEL CARBONYL AND METHYL IODINE.
Claim 2
Dependent Claim
47 words
PROCESS FOR THE PRODUCTION OF ACETIC ACID, WHICH COMPRISES SUBJECTING METHYL CHLORIDE TO REACTION WITH CARBON MONOXIDE AT A TEMPERATURE OF BETWEEN 180* AND 350* C. UNDER A TOTAL PRESSURE OF BETWEEEN 100 AND 500 ATMOSPHERE AN DIN THE PRESENCE OF WATER, NICKEL CARBONYL AND METHYL IODINE.
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) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |