US2456786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating of hydrocarbon fluids
Assignee: Lummus Technology LLC
•
Filing: 1945-05-18
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Granted: 1948-12-21
•
Expires: 1965-05-18
Abstract
No abstract record available.
Inventors
- 👤 Kniel Ludwig
- 👤 Lambert Pierre
- 👤 Herbert R Treat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:46
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/20; C; C10; C10G; C10G9/00; C10G9/14; C10G9/18; C10G9/20; Y; Y10; Y10S; Y10S585/00; Y10S585/919; Y10S585/921; Y10S585/922; Y10S585/924
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1615482A
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US1980330A
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GB402299A
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US2035900A
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US2108397A
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US2163867A
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US2105821A
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US2211708A
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US2192238A
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US2256882A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |