US2926143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchange system
Assignee: Babcock and Wilcox Co
•
Filing: 1954-01-18
•
Granted: 1960-02-23
•
Expires: 1974-01-18
Abstract
No abstract record available.
Inventors
- 👤 Marshall B Leland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:44
CPC Classifications
F; F28; F28D; F28D13/00; B; B01; B01J; B01J8/00; B01J8/18; B01J8/1836; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00106; B01J2208/00115; B01J2208/00132
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
58 words
A METHOD OF REGULATING THE TEMPERATURE OF A FLUIDIZED BED OF CATALYST DURING THE REGENERATION THEREOF WHICH COMPRISES COOLING SAID FLUIDIZED BED BY INDIRECT CONTACT WITH SATURATED STEAM WHICH IS SUPERHEATED THEREBY, COOLING SAID SUPERHEATED STEAM BY HEAT EXCHANGE WITH COOLING WATER, AND FURTHER COOLING THE FLUIDIZED BED BY REHEATING SAID STEM IN SURFACE CONTACT WITH SAID BED.
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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) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |