Patent US2776192A successfully refreshed from Google Patents.
US2776192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acetic acid cracking furnace
Assignee: Eastman Kodak Co
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Filing: 1952-12-10
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Granted: 1957-01-01
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Expires: 1972-12-10
Abstract
No abstract record available.
Inventors
- 👤 Edwin S Painter
- 👤 Louis G Haller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:01
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/24; B01J19/2415; B01J19/2425; C; C07; C07C; C07C45/00; C07C45/87; C07C45/88; C07C45/89; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00054; B01J2219/00056; B01J2219/00069; B01J2219/00074; B01J2219/00076; B01J2219/00085; B01J2219/00157; B01J2219/00159
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
APPARATUS FOR PYROLYSING A KETENIZABLE SUBSTANCE TO FORM KETENE, COMPRISING A FURNACE WALL STRUCTURE DEFINING A PLURALITY OF VERTICALLY ELONGATED PYROLYSIS CHAMBERS. MEANS FOR PASSING HOT COMBUSTION GASES INITALLY INTO ONE END CHAMBER, SAID WALL STRUCTURE HAVING OPENINGS CONNECTING THE CHAMBERS IN SERIES FOR PASSAGE OF THE HOT GASSES IN ZIG-ZAG FASHION THERETHROUGH, PASSING LAST THROUGH THE OTHER END CHAMBER, SEPARATE UPPER AND LOWER COILED TUBES LOCATED RESPECTIVELY IN THE UPPER AND LOWER ENDS OF EACH CHAMBER, TUBULAR CONDUIT MEANS CONNECTING EACH COILED TUBE IN THE UPPER END OF EACH CHAMBER SERIALLY WITH A COILED TUBE IN THE UPPER END OF EACH OF THE OTHER CHAMBERS, TUBULAR CONDUIT MEANS CONNECTING EACH COILED TUBE IN THE LOWER END OF EACH CHAMBER SERIALLY WITH A COILED TUBE IN THE LOWER END OF EACH OF THE OTHER CHAMBERS, WHEREBY TWO SEPARATE TUBULAR FLOW PATHS THROUGH SAID CHAMBERS ARE PROVIDED, MEANS FOR REMOVING KETENE FROM THE COILED TUBES LOCATED IN SAID ONE END CHAMBER, MEANS FOR PASSING A KETENIZABLE SUBSTANCE INTO EACH OF THE COILED TUBES LOCATED IN SAID END CHAMBER.
Claim 2
Dependent Claim
177 words
APPARATUS FOR PYROLYSING A KETENIZABLE SUBSTANCE TO FORM KETENE, COMPRISING A FURNACE WALL STRUCTURE DEFINING A PLURALITY OF VERTICALLY ELONGATED PYROLYSIS CHAMBERS. MEANS FOR PASSING HOT COMBUSTION GASES INITALLY INTO ONE END CHAMBER, SAID WALL STRUCTURE HAVING OPENINGS CONNECTING THE CHAMBERS IN SERIES FOR PASSAGE OF THE HOT GASSES IN ZIG-ZAG FASHION THERETHROUGH, PASSING LAST THROUGH THE OTHER END CHAMBER, SEPARATE UPPER AND LOWER COILED TUBES LOCATED RESPECTIVELY IN THE UPPER AND LOWER ENDS OF EACH CHAMBER, TUBULAR CONDUIT MEANS CONNECTING EACH COILED TUBE IN THE UPPER END OF EACH CHAMBER SERIALLY WITH A COILED TUBE IN THE UPPER END OF EACH OF THE OTHER CHAMBERS, TUBULAR CONDUIT MEANS CONNECTING EACH COILED TUBE IN THE LOWER END OF EACH CHAMBER SERIALLY WITH A COILED TUBE IN THE LOWER END OF EACH OF THE OTHER CHAMBERS, WHEREBY TWO SEPARATE TUBULAR FLOW PATHS THROUGH SAID CHAMBERS ARE PROVIDED, MEANS FOR REMOVING KETENE FROM THE COILED TUBES LOCATED IN SAID ONE END CHAMBER, MEANS FOR PASSING A KETENIZABLE SUBSTANCE INTO EACH OF THE COILED TUBES LOCATED IN SAID END CHAMBER.
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) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |