US2462938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation reaction
Assignee: Celanese Corp
•
Filing: 1945-07-03
•
Granted: 1949-03-01
•
Expires: 1965-07-03
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Bludworth
- 👤 Jr Paul C Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:13
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1956482A
Cited
US1895522A
Cited
US1880901A
Cited
US2288769A
Cited
US2215070A
Cited
US2260409A
Cited
US2415531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-29 | 1952-08-30 | 1953-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-29 | 1956-08-30 | 1957-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-29 | 1960-08-30 | 1961-03-01 | $7700.00 | Window Closed / Lapsed |