US2849492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the oxidation of methanol to formaldehyde using unsupported catalyst
Assignee: Reichhold Chemicals Inc
•
Filing: 1957-05-23
•
Granted: 1958-08-26
•
Expires: 1977-05-23
Abstract
No abstract record available.
Inventors
- 👤 Charles L Allyn
- 👤 Eugene M Barrentine
- 👤 Theodore S Hodgins
- 👤 Frederic J Shelton
- 👤 Ralph L Rawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:36
CPC Classifications
B; B01; B01J; B01J21/00; C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/37; C07C45/38
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |