US2265762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of phases with the aid of sonic waves
Assignee: Shell Development Co
•
Filing: 1940-04-09
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Granted: 1941-12-09
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Expires: 1960-04-09
Abstract
No abstract record available.
Inventors
- 👤 Donald S Mckittrick
- 👤 Robert E Cornish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:05
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/14; B; B01; B01D; B01D3/00; B01D3/006; B01J; B01J19/00; B01J19/08; B01J19/10; Y; Y10; Y10S; Y10S159/00; Y10S159/90; Y10S203/00; Y10S203/02; Y10S203/11
Claims Analysis
Total Claims: 0
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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) | 1944-12-08 | 1945-06-09 | 1945-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-12-08 | 1949-06-09 | 1949-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-12-08 | 1953-06-09 | 1953-12-09 | $7700.00 | Window Closed / Lapsed |