Patent US3798267A successfully refreshed from Google Patents.
US3798267A
Expired / Lapsed
US
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Process of producing acetic acid from methyl formate
Assignee: Ajinomoto Co Inc
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Filing: 1972-08-10
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Granted: 1974-03-19
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Expires: 1992-08-10
Abstract
Abstract METHYL FORMATE IS ISOMERIZED TO ACETIC ACID IN THE PRESENCE OF ACTIVATED CARBON AND A HALOGEN PROMOTER AT 200* TO 450*C.
Inventors
- 👤 H Wakamatsu
- 👤 J Sato
- 👤 Hamaokat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:45
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/10; C07C51/12; B; B01; B01J; B01J27/00; B01J27/06; B01J27/08; B01J27/10; B01J31/00; B01J31/02; B01J31/0231; C07C51/347; C07C51/353; B01J21/00; B01J21/18; B01J2231/00; B01J2231/50; B01J2231/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |