US2829115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Activated carbon for hypersorber applications
Assignee: Witco Corp
•
Filing: 1954-09-13
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Granted: 1958-04-01
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Expires: 1974-09-13
Abstract
No abstract record available.
Inventors
- 👤 Raymond M Bushong
- 👤 Harold R Cole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:56
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/30; C01B32/312; C01B32/318; C01B32/33
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
THE METHOD OF PRODUCING ACTIVATED CARBON OF HIGH DENSITY, LARGE PARTICLE SIZE, AND HIGH ADSORPTIVE CAPACITY, WHICH METHOD COMPRISES MIXING IN A VESSEL HAVING HEATING MEANS, PETROLEUM ACID SLUDGE COKE FLOUR AND SULPHUR IN A PROPORTION BY WEIGHT ON A FIXED CARBON BASIS, FROM ABOUT 100 TO 110 PARTS OF SAID SLUDGE COKE TO ABOUT 9 PARTS OF SULPHUR, HEATING SAID MIXTURE TO MORE THAN 130*C., ADDINT THERETO FROM ABOUT 33 TO 36 PARTS BY WEIGHT OF A BINDER SELECTED FROM THE GROUP CONSISTING OF COAL TAR PITCH AND WOOD TAR PITCH, HEATING SAID MIXTURE TO NOT MORE THAN 170*C., PELLETING AND CRUSHING SAID MIXTURE PRIOR TO ACTIVATING THE RESULTING PARTICLES.
Claim 2
Independent Claim
111 words
THE METHOD OF PRODUCING ACTIVATED CARBON OF HIGH DENSITY, LARGE PARTICLE SIZE, AND HIGH ADSORPTIVE CAPACITY, WHICH METHOD COMPRISES MIXING IN A VESSEL HAVING HEATING MEANS, PETROLEUM ACID SLUDGE COKE FLOUR AND SULPHUR IN A PROPORTION BY WEIGHT ON A FIXED CARBON BASIS, FROM ABOUT 100 TO 110 PARTS OF SAID SLUDGE COKE TO ABOUT 9 PARTS OF SULPHUR, HEATING SAID MIXTURE TO MORE THAN 130*C., ADDINT THERETO FROM ABOUT 33 TO 36 PARTS BY WEIGHT OF A BINDER SELECTED FROM THE GROUP CONSISTING OF COAL TAR PITCH AND WOOD TAR PITCH, HEATING SAID MIXTURE TO NOT MORE THAN 170*C., PELLETING AND CRUSHING SAID MIXTURE PRIOR TO ACTIVATING THE RESULTING PARTICLES.
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) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |