US2761882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous sodium reduction process
Assignee: Millennium Petrochemicals Inc
•
Filing: 1955-04-04
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Granted: 1956-09-04
•
Expires: 1975-04-04
Abstract
No abstract record available.
Inventors
- 👤 Robert E Hulse
- 👤 Schott Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:58
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/132; C07C29/136; C07C29/147
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2019022A
Cited
US2460969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |