US2735804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stack
Assignee: —
•
Filing: —
•
Granted: 1956-02-21
•
Expires: 1973-02-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:47
CPC Classifications
C; C10; C10B; C10B55/00; C10B55/02; C10B55/04; C10B55/08; C10B55/10; C10G; C10G9/00; C10G9/28; C10G9/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
IN A PROCESS FOR CONVERTING A HEAVY HYDROCARBON OIL TO LOW MOLECULAR WEIGHT NORMALLY GASEOUS UNSATURATED HYDROCARBONS, AROMATIC, AND COKE BY THE STEPS OF CONTACTING THE OIL CHARGE STOCK WITH FLUIDIZED, INERT, PARTICULATE SOLIDS IN A REACTION ZONE AT A TEMPERATURE OF 1300* TO 2100* F. WHEREIN THE OIL IS CONVERTED TO PRODUCE VAPORS AND CARBONACEOUS SOLIDS ARE CONTINUOUSLY DEPOSED ON THE PARTICULAR SOLIDS; REMOVING PRODUCT VAPORS FROM THE REACTION ZONE; HEATING THE CIRCULATING PARTICLES SOLIDS REMOVED FROM THE REACTION ZONE IN A SEPARATE HEATING ZONE TO INCREASE THE TEMPERATURE OF SUCH SOLIDS TO AT LEAST 1400* F., RETURNING CIRCULATING HEATED SOLIDS FROM THE HEATING STEP TO THE REACTION ZONE TO SUPPLY HEAT THERETO AND WHEREIN THE PARTICULATE SOLIDS FROM THE HEATING STEP CONTAIN OCCLUDED GASES INCLUDING CARBON DIOXIDE, CARBON MONOXIDE, AND OXYGEN, THE IMPROVEMENT WHICH COMPRISES REMOVING A MAJOR PROPORTION OF THE OCCLUDED GASES FROM THE CIRCULATING COKE FROM THE HEATING STEP BEFORE IT REACHES THE REACTION ZONE BY STRIPPING THE CIRCULATING COKE FROM THE HEATING STEP WITH NORMALLY GASEOUS HYDROCARBON HAVING AT LEAST TWO CARBON ATOMS.
Claim 2
Dependent Claim
178 words
IN A PROCESS FOR CONVERTING A HEAVY HYDROCARBON OIL TO LOW MOLECULAR WEIGHT NORMALLY GASEOUS UNSATURATED HYDROCARBONS, AROMATIC, AND COKE BY THE STEPS OF CONTACTING THE OIL CHARGE STOCK WITH FLUIDIZED, INERT, PARTICULATE SOLIDS IN A REACTION ZONE AT A TEMPERATURE OF 1300* TO 2100* F. WHEREIN THE OIL IS CONVERTED TO PRODUCE VAPORS AND CARBONACEOUS SOLIDS ARE CONTINUOUSLY DEPOSED ON THE PARTICULAR SOLIDS; REMOVING PRODUCT VAPORS FROM THE REACTION ZONE; HEATING THE CIRCULATING PARTICLES SOLIDS REMOVED FROM THE REACTION ZONE IN A SEPARATE HEATING ZONE TO INCREASE THE TEMPERATURE OF SUCH SOLIDS TO AT LEAST 1400* F., RETURNING CIRCULATING HEATED SOLIDS FROM THE HEATING STEP TO THE REACTION ZONE TO SUPPLY HEAT THERETO AND WHEREIN THE PARTICULATE SOLIDS FROM THE HEATING STEP CONTAIN OCCLUDED GASES INCLUDING CARBON DIOXIDE, CARBON MONOXIDE, AND OXYGEN, THE IMPROVEMENT WHICH COMPRISES REMOVING A MAJOR PROPORTION OF THE OCCLUDED GASES FROM THE CIRCULATING COKE FROM THE HEATING STEP BEFORE IT REACHES THE REACTION ZONE BY STRIPPING THE CIRCULATING COKE FROM THE HEATING STEP WITH NORMALLY GASEOUS HYDROCARBON HAVING AT LEAST TWO CARBON ATOMS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-20 | 1959-08-22 | 1960-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-20 | 1963-08-22 | 1964-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-20 | 1967-08-22 | 1968-02-21 | $7700.00 | Window Closed / Lapsed |