Patent US2508513A successfully refreshed from Google Patents.
US2508513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of methyl formate to acetic acid
Assignee: Celanese Corp
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Filing: 1948-04-06
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Granted: 1950-05-23
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Expires: 1968-04-06
Abstract
No abstract record available.
Inventors
- 👤 Groombridge Walter Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:30
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/10; C07C51/12; C07C51/347; C07C51/353
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
PROCESS FOR THE MANUFACTURE OF ACETIC ACID, WHICH COMPRISES HEATING METHYL FORMATE IN THE PRESENCE OF A CARBONYL OF AN IRON METAL AND A HALOGEN SELECTED FROM THE GROUP CONSISTING OF CHLORINE, BROMINE AND IODINE.
Claim 2
Dependent Claim
35 words
PROCESS FOR THE MANUFACTURE OF ACETIC ACID, WHICH COMPRISES HEATING METHYL FORMATE IN THE PRESENCE OF A CARBONYL OF AN IRON METAL AND A HALOGEN SELECTED FROM THE GROUP CONSISTING OF CHLORINE, BROMINE AND 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) | 1953-05-22 | 1953-11-21 | 1954-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-22 | 1957-11-21 | 1958-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-22 | 1961-11-21 | 1962-05-23 | $7700.00 | Window Closed / Lapsed |