US2531725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pebble heater process
Assignee: Phillips Petroleum Co
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Filing: 1948-01-05
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Granted: 1950-11-28
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Expires: 1968-01-05
Abstract
No abstract record available.
Inventors
- 👤 Church J Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:09
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J8/087; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00327; B01J2208/00336; B01J2208/0038; B01J2208/00477; B01J2208/00495; Y; Y10; Y10S; Y10S585/00; Y10S585/919; Y10S585/921; Y10S585/924; Y10S585/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A PROCESS FOR HEATING A GAS COMPRISING CONTINUOUSLY PASSING A CONTIGUOUS MASS OF HOT PEBBLES DOWNWARDLY THROUGH A CYLINDRICAL ZONE HAVING A RATIO OF HEIGHT TO DIAMETER OF AT LEAST 1.5 IN CONTACT WITH A STREAM OF GAS TO BE HEATED, WHEREIN SAID PEBBLES ARE INTRODUCED TO SAID ZONE ECCENTRICALLY THERETO AND ARE WITHDRAWN CONCENTRICALLY THEREWITH, THEREBY EFFECTING MORE RAPID PEBBLE FLOW FROM THE POINT OF INTRODUCTION DIRECTLY TO THE POINT OF WITHDRAWAL OF SAID PEBBLES THAN THROUGH OTHER SECTIONS OF SAID ZONE, THE IMPROVEMENT COMPRISING PASSING SAID MASS OF PEB-
Claim 2
Dependent Claim
92 words
IN A PROCESS FOR HEATING A GAS COMPRISING CONTINUOUSLY PASSING A CONTIGUOUS MASS OF HOT PEBBLES DOWNWARDLY THROUGH A CYLINDRICAL ZONE HAVING A RATIO OF HEIGHT TO DIAMETER OF AT LEAST 1.5 IN CONTACT WITH A STREAM OF GAS TO BE HEATED, WHEREIN SAID PEBBLES ARE INTRODUCED TO SAID ZONE ECCENTRICALLY THERETO AND ARE WITHDRAWN CONCENTRICALLY THEREWITH, THEREBY EFFECTING MORE RAPID PEBBLE FLOW FROM THE POINT OF INTRODUCTION DIRECTLY TO THE POINT OF WITHDRAWAL OF SAID PEBBLES THAN THROUGH OTHER SECTIONS OF SAID ZONE, THE IMPROVEMENT COMPRISING PASSING SAID MASS OF PEB-
References Cited (Backward Citations)
US2418837A
Cited
US2429359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |