US2443210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quenching of hot gases
Assignee: Phillips Petroleum Co
•
Filing: 1943-12-20
•
Granted: 1948-06-15
•
Expires: 1963-12-20
Abstract
No abstract record available.
Inventors
- 👤 John D Upham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:32
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/76; C07C2/78; B; B01; B01J; B01J8/00; B01J8/18; B01J8/1836; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C5/00; C07C5/32; C07C5/327; C07C5/333
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2366805A
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US1178667A
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US1148331A
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US1977684A
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US1973851A
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US2197257A
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GB525197A
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US2289329A
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US2322122A
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US2303047A
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US2391555A
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US2376190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-15 | 1951-12-15 | 1952-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-15 | 1955-12-15 | 1956-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-15 | 1959-12-15 | 1960-06-15 | $7700.00 | Window Closed / Lapsed |