Patent US2758017A successfully refreshed from Google Patents.
US2758017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for oxidizing residual pulp liquor
Assignee: Babcock and Wilcox Co
•
Filing: 1949-07-30
•
Granted: 1956-08-07
•
Expires: 1969-07-30
Abstract
No abstract record available.
Inventors
- 👤 Robert K Allen
- 👤 Jr James H Coulter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:52
CPC Classifications
D; D21; D21C; D21C11/00; D21C11/0057; C; C01; C01B; C01B17/00; C01B17/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
APPARATUS FOR THE OXIDATION OF A PUMP RESIDUAL LIQUOR SUBSTANTIALLY WITHOUT EVAPORATION COMPRISING A TOWER, A PLURALITY OF VERTICALLY EXTENDING CONTINUOUS PLANAR WALLS IN THE INTERMEDIATE AND UPPER PORTION ON SAID TOWER, A LIQUOR DISTRIBUTOR HAVING A PERFORATE BOTTOM POSITIONED ADJACENT THE UPPER END OF SAID TOWER WALLS, SAID DISTRIBUTOR ARRANGED TO MAINTAIN A POOL OF LIQUOR THEREIN AND TO DELIVER A PLURALITY OF STREAMS OF LIQUOR TO AND IN SUBSTANTIAL VERTICAL ALIGNMENT WITH SAID WALLS, MEANS FOR PASSING A FLOW OF AIR BETWEEN SAID WALLS IN DIRECT SURFACE CONTACT RELATIONSHIP WITH FILMS OF LIQUOR THEREON, AND A PLURALITY OF AIR DISCHARGE PIPES EXTENDING
Claim 2
Dependent Claim
104 words
APPARATUS FOR THE OXIDATION OF A PUMP RESIDUAL LIQUOR SUBSTANTIALLY WITHOUT EVAPORATION COMPRISING A TOWER, A PLURALITY OF VERTICALLY EXTENDING CONTINUOUS PLANAR WALLS IN THE INTERMEDIATE AND UPPER PORTION ON SAID TOWER, A LIQUOR DISTRIBUTOR HAVING A PERFORATE BOTTOM POSITIONED ADJACENT THE UPPER END OF SAID TOWER WALLS, SAID DISTRIBUTOR ARRANGED TO MAINTAIN A POOL OF LIQUOR THEREIN AND TO DELIVER A PLURALITY OF STREAMS OF LIQUOR TO AND IN SUBSTANTIAL VERTICAL ALIGNMENT WITH SAID WALLS, MEANS FOR PASSING A FLOW OF AIR BETWEEN SAID WALLS IN DIRECT SURFACE CONTACT RELATIONSHIP WITH FILMS OF LIQUOR THEREON, AND A PLURALITY OF AIR DISCHARGE PIPES EXTENDING
References Cited (Backward Citations)
US146728A
Cited
US341316A
Cited
US1654181A
Cited
US1445603A
Cited
US1855353A
Cited
US1847845A
Cited
US2042127A
Cited
US2139827A
Cited
US2317951A
Cited
US2574193A
Cited
US2570460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-07 | 1960-02-06 | 1960-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-07 | 1964-02-06 | 1964-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-07 | 1968-02-06 | 1968-08-07 | $7700.00 | Window Closed / Lapsed |