US2966447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacturing active carbon
Assignee: Individual
•
Filing: 1957-12-02
•
Granted: 1960-12-27
•
Expires: 1977-12-02
Abstract
No abstract record available.
Inventors
- 👤 Walter Hermine Johanna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:24
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/30; C01B32/312; C01B32/336
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
AN APPARATUS FOR MANUFACTURING ACTIVE CARBON COMPRISING ESSENTIALLY SEVERAL CRUCIBLES PROVIDED AT THEIR LOWER PARTS WITH INLETS FOR ACTIVATING GASES, AND WHICH ARE VERTICALLY ARRANGED ONE ABOVE THE OTHER IN SUCH A MANNER THAT, WHEN FILLED WITH CARBONACEOUS MATERIAL, THE LOWER PART OF EACH CRUCIBLE EXTENDS INTO THE CARBONACEOUS MATERIAL CONTAINED IN THE NEXT LOWER CRUCIBLE, THUS LEAVING AN OPEN ANNULAR SPACE, WHICH OPENS DIRECTLY INTO AND FORMS PART OF THE SPACE BETWEEN THE CRUCIBLES AND THE WALL OF THE APPARATUS.
Claim 2
Independent Claim
81 words
AN APPARATUS FOR MANUFACTURING ACTIVE CARBON COMPRISING ESSENTIALLY SEVERAL CRUCIBLES PROVIDED AT THEIR LOWER PARTS WITH INLETS FOR ACTIVATING GASES, AND WHICH ARE VERTICALLY ARRANGED ONE ABOVE THE OTHER IN SUCH A MANNER THAT, WHEN FILLED WITH CARBONACEOUS MATERIAL, THE LOWER PART OF EACH CRUCIBLE EXTENDS INTO THE CARBONACEOUS MATERIAL CONTAINED IN THE NEXT LOWER CRUCIBLE, THUS LEAVING AN OPEN ANNULAR SPACE, WHICH OPENS DIRECTLY INTO AND FORMS PART OF THE SPACE BETWEEN THE CRUCIBLES AND THE WALL OF THE APPARATUS.
References Cited (Backward Citations)
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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) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |