US2595384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grid seal for fluidized solids contacting systems
Assignee: Standard Oil Co
•
Filing: 1950-12-07
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Granted: 1952-05-06
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Expires: 1970-12-07
Abstract
No abstract record available.
Inventors
- 👤 John H Johnsen
- 👤 Jr Nate H Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:09
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/44; B01D; B01D3/00; B01D3/14; B01D3/32; B01D3/324; B01D3/326; B01D3/328
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) | 1955-05-06 | 1955-11-05 | 1956-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-06 | 1959-11-05 | 1960-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-06 | 1963-11-05 | 1964-05-06 | $7700.00 | Window Closed / Lapsed |