US3252886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for pyrolyzing solid carbonaceous materials
Assignee: Individual
•
Filing: 1962-02-02
•
Granted: 1966-05-24
•
Expires: 1982-02-02
Abstract
No abstract record available.
Inventors
- 👤 Clarence L Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:44
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A PROCESS FOR THE PRODUCTION OF A SUBSTANTIALLY SOLIDS-FREE OIL FROM A SOLID CARBONACEOUS MATERIAL COMPRISING PYROLYZING SAID CARBONACEOUS MATERIAL IN A PYROLYSIS ZONE AT A NON-CRACKING TEMPERATURE BY CONTACTING SAID CARBONACEOUS MATERIAL WITH HOTTER HEAT-CARRYING BODIES TO PROVIDE HOT SPENT SOLIDS AND AN UNCRACKED EFFLUENT VAPOR CONTAINING ENTRAINED SOLIDS; RECOVERING SAID SOLIDSCONTAINING UNCRACKED EFFLUENT VAPOR FROM SAID PYROLYSIS ZONE; RECOVERING SAID HEAT-CARRYING BODIES FROM SAID PYROLYSIS ZONE; TRANSFERRING SAID HEAT-CARRYING BODIES TO A CONFINED FIRST SOLIDS REMOVAL ZONE; INTRODUCING SAID SOLIDSCONTAINING UNCRACKED EFFLUENT VAPOR INTO SAID FIRST SOLIDS REMOVAL ZONE TO CONTACT SAID HEAT-CARRYING BODIES THEREIN, THEREBY EFFECTING THE REMOVAL OF A PORTION OF SAID ENTRAINED SOLIDS FROM SAID UNCRACKED VAPOR; PASSING SAID UNCRACKED VAPOR OF REDUCED SOLIDS CONTENT THROUGH A SECOND
Claim 2
Dependent Claim
123 words
A PROCESS FOR THE PRODUCTION OF A SUBSTANTIALLY SOLIDS-FREE OIL FROM A SOLID CARBONACEOUS MATERIAL COMPRISING PYROLYZING SAID CARBONACEOUS MATERIAL IN A PYROLYSIS ZONE AT A NON-CRACKING TEMPERATURE BY CONTACTING SAID CARBONACEOUS MATERIAL WITH HOTTER HEAT-CARRYING BODIES TO PROVIDE HOT SPENT SOLIDS AND AN UNCRACKED EFFLUENT VAPOR CONTAINING ENTRAINED SOLIDS; RECOVERING SAID SOLIDSCONTAINING UNCRACKED EFFLUENT VAPOR FROM SAID PYROLYSIS ZONE; RECOVERING SAID HEAT-CARRYING BODIES FROM SAID PYROLYSIS ZONE; TRANSFERRING SAID HEAT-CARRYING BODIES TO A CONFINED FIRST SOLIDS REMOVAL ZONE; INTRODUCING SAID SOLIDSCONTAINING UNCRACKED EFFLUENT VAPOR INTO SAID FIRST SOLIDS REMOVAL ZONE TO CONTACT SAID HEAT-CARRYING BODIES THEREIN, THEREBY EFFECTING THE REMOVAL OF A PORTION OF SAID ENTRAINED SOLIDS FROM SAID UNCRACKED VAPOR; PASSING SAID UNCRACKED VAPOR OF REDUCED SOLIDS CONTENT THROUGH A SECOND
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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) | 1969-05-23 | 1969-11-22 | 1970-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-23 | 1973-11-22 | 1974-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-23 | 1977-11-22 | 1978-05-24 | $7700.00 | Window Closed / Lapsed |