Patent US3104947A successfully refreshed from Google Patents.
US3104947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submerged combustion concentration apparatus and process
Assignee: Collier Carbon and Chemical Corp
•
Filing: 1961-01-09
•
Granted: 1963-09-24
•
Expires: 1981-01-09
Abstract
No abstract record available.
Inventors
- 👤 Robert L Switzer
- 👤 William C Lieffers
- 👤 Clyde H O Berg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:06
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/14; C; C01; C01B; C01B25/00; C01B25/16; C01B25/18; C01B25/234; C01B25/2343; C01B25/24; Y; Y10; Y10S; Y10S159/00; Y10S159/13
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
143 words
A SUBMERGED COMBUSTION HEATER COMPRISING A BURNER, FUEL AND OXIDANT SUPPLY LINES TO SAID BURNER, MEANS TO INITIATE COMBUSTION IN SAID BURNER, A FIRST CYLINDRICAL CONDUIT SURROUNDING SAID BURNER, CLOSED AT ITS UPPER END AND HAVING A CONSTRICTED LOWER END POSITIONED A SUBSTANTIAL DISTANCE BENEATH SAID BURNER, A VESSEL HAVING IN ITS LOWER EXTREMITY AN INTERIOR CYLINDER WALL CONCENTRICALLY SURROUNDING SAID FIRST CONDUIT, SAID WALL BEING IMPERMEABLE TO FLUIDS AND HAVING AN INSIDE DIAMETER BETWEEN ABOUT 0.2 AND 3.0 INCHES GREATER THAN THE OUTSIDE DIAMETER OF SAID FIRST CONDUIT TO FORM A FIRST ANNULAR ZONE THEREBETWEEN SAID VESSEL HAVING A CLOSED LOWER END BENEATH SAID CONSTRICTED LOWER END OF SAID FIRST CONDUIT AND HAVING IN ITS UPPER EXTREMITY AN INTERIOR WALL OF SUBSTANTIALLY GREATER INTERNAL DIAMETER THAN SAID OUTSIDE DIAMETER OF SAID FIRST CONDUIT SO AS TO FORM THEREBETWEEN A SECOND ANNULAR ZONE
References Cited (Backward Citations)
US1012523A
Cited
US1258562A
Cited
US1689551A
Cited
US1732805A
Cited
US2506853A
Cited
US2551569A
Cited
US2579203A
Cited
US2772729A
Cited
GB759062A
Cited
US2830769A
Cited
US2828956A
Cited
US2849860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |