US2527443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for disposal of mixtures of metallic sodium and calcium
Assignee: Ethyl Corp
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Filing: 1948-02-26
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Granted: 1950-10-24
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Expires: 1968-02-26
Abstract
No abstract record available.
Inventors
- 👤 Frank L Padgitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:11
CPC Classifications
C; C01; C01D; C01D1/00; C01D1/04; B; B01; B01J; B01J19/00; B01J19/24; B01J19/2455; B01J19/246
Claims Analysis
Total Claims: 0
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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) | 1953-10-23 | 1954-04-24 | 1954-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-23 | 1958-04-24 | 1958-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-23 | 1962-04-24 | 1962-10-24 | $7700.00 | Window Closed / Lapsed |