US2541071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous method for separating materials by liquid thermal diffusion
Assignee: Standard Oil Co
•
Filing: 1947-07-22
•
Granted: 1951-02-13
•
Expires: 1967-07-22
Abstract
No abstract record available.
Inventors
- 👤 Jones Arthur Letcher
- 👤 Everett C Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:16
CPC Classifications
C; C11; C11B; C11B13/00; C11B13/005; B; B01; B01D; B01D17/00; B01D17/005; C10; C10G; C10G33/00; C10G33/06; C11B7/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/74
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |