US2778442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for removing suspended solids from hot gas
Assignee: Whiting Corp
•
Filing: 1952-01-08
•
Granted: 1957-01-22
•
Expires: 1972-01-08
Abstract
No abstract record available.
Inventors
- 👤 William O Jenkins
- 👤 Harold B Menardi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:16
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/06; Y; Y10; Y10S; Y10S261/00; Y10S261/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US614360A
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US1979189A
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USRE19507E
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US1335494A
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GB168279A
Cited
US2057578A
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US2203554A
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US2480230A
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CH90255A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-22 | 1960-07-23 | 1961-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-22 | 1964-07-23 | 1965-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-22 | 1968-07-23 | 1969-01-22 | $7700.00 | Window Closed / Lapsed |