US2692903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for converting hydrocarbons
Assignee: Phillips Petroleum Co
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Filing: 1951-01-02
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Granted: 1954-10-26
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Expires: 1971-01-02
Abstract
No abstract record available.
Inventors
- 👤 Karl H Hachmuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:37
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J8/087; C; C10; C10G; C10G9/00; C10G9/28; C10G9/30; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00026; B01J2208/00035; B01J2208/00088; B01J2208/00327; B01J2208/00336; B01J2208/00353; B01J2208/00371; B01J2208/0038
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A METHOD OF OPERATING PEBBLE HEATER APPARATUS FOR CRACKING REFRACTORY HYDROCARBONS WHICH COMPRISES IN COMBINATION THE STEPS OF GRAVITATING A MASS OF PEBBLES THROUGH A PEBBLE HEATING ZONE; PASSING HOT GASEOUS MATERIALS
Claim 2
Independent Claim
32 words
A METHOD OF OPERATING PEBBLE HEATER APPARATUS FOR CRACKING REFRACTORY HYDROCARBONS WHICH COMPRISES IN COMBINATION THE STEPS OF GRAVITATING A MASS OF PEBBLES THROUGH A PEBBLE HEATING ZONE; PASSING HOT GASEOUS MATERIALS
References Cited (Backward Citations)
US2394651A
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US2385326A
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US2468508A
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US2439730A
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US2448257A
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US2493036A
Cited
US2518304A
Cited
US2548286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-25 | 1958-04-26 | 1958-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-25 | 1962-04-26 | 1962-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-25 | 1966-04-26 | 1966-10-26 | $7700.00 | Window Closed / Lapsed |