US2812249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon impregnated solids and method of preparing the same
Assignee: Gulf Research and Development Co
•
Filing: 1954-12-23
•
Granted: 1957-11-05
•
Expires: 1974-12-23
Abstract
No abstract record available.
Inventors
- 👤 Oran L Culberson
- 👤 William A Pardee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:50
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/16; C22B1/216
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
THE PROCESS OF MANUFACTURING A HIGHLY REACTIVE AGGREGATE OF AN OXIDE ORE AND CARBON WHICH COMPRISES: CHARGING AN OXIDE ORE TO A HEATED HORIZONTAL ROTARY KILN; ROTATING THE KILN AND THEREBY TUMBLING THE OXIDE ORE AND CAUSING IT TO TRAVEL LONGITUDINALLY THROUGH THE SAID KILN; APPLYING A SMALL PERCENTAGE OF LIQUEFIED PETROLEUM ASPHALT TO THE OXIDE ORE AT A POINT NEAR THE CHARGING END OF THE SAID KILN; MAINTAINING THE TEMPERATURE IN THE SAID KILN WITHIN A RANGE THAT WILL CARBONIZE THE APPLIED ASSUCCESSIVELY APPLYING AND CARBONIZING ADDITIONAL SMALL PERCENTAGES OF ASPHALT WITH THE SAID OXIDE ORE DURING ITS LONGITUDINAL PASSAGE THROUGH THE SAID KILN; AND DISCHARGING FROM THE KILN AN AGGREGATE OF FULLY CARBONIZED ASPHALT AND OXIDE ORE.
Claim 2
Dependent Claim
119 words
THE PROCESS OF MANUFACTURING A HIGHLY REACTIVE AGGREGATE OF AN OXIDE ORE AND CARBON WHICH COMPRISES: CHARGING AN OXIDE ORE TO A HEATED HORIZONTAL ROTARY KILN; ROTATING THE KILN AND THEREBY TUMBLING THE OXIDE ORE AND CAUSING IT TO TRAVEL LONGITUDINALLY THROUGH THE SAID KILN; APPLYING A SMALL PERCENTAGE OF LIQUEFIED PETROLEUM ASPHALT TO THE OXIDE ORE AT A POINT NEAR THE CHARGING END OF THE SAID KILN; MAINTAINING THE TEMPERATURE IN THE SAID KILN WITHIN A RANGE THAT WILL CARBONIZE THE APPLIED ASSUCCESSIVELY APPLYING AND CARBONIZING ADDITIONAL SMALL PERCENTAGES OF ASPHALT WITH THE SAID OXIDE ORE DURING ITS LONGITUDINAL PASSAGE THROUGH THE SAID KILN; AND DISCHARGING FROM THE KILN AN AGGREGATE OF FULLY CARBONIZED ASPHALT AND OXIDE ORE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |