US2605236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for conversion of portland cement kiln dust to an adsorbent material and adsorbent material made thereby
Assignee: Penn Dixie Cement Corp
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Filing: 1950-07-11
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Granted: 1952-07-29
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Expires: 1970-07-11
Abstract
No abstract record available.
Inventors
- 👤 Henry C Mccants
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:08
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/28; B01J20/28002; B01J20/28004; B01J20/02; B01J20/04; B01J20/041; B01J20/06; B01J20/08; B01J20/10; B01J20/103; B01J20/30; B01J20/3007; B01J2220/00; B01J2220/40; B01J2220/48; B01J2220/4875; B01J2220/4887
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PROCESS FOR MAKING AN ADSORBENT FROM CEMENT KILN FLUE DUST WHICH COMPRISES THE STEPS OF CARBONATING THE DUST, HYDRATING THE DUST, FORMING THE DUST INTO PELLETS SUBSTANTIALLY ALL OF WHICH WILL PASS THROUGH AN 8 MESH SCREEN AND BE RETAINED ON A 100 MESH SCREEN, AND REGULATING THE TOTAL WATER CONTENT OF THE PELLETS AT ABOUT 6.0 TO ABOUT 17 PER CENT BY WEIGHT.
Claim 2
Dependent Claim
65 words
A PROCESS FOR MAKING AN ADSORBENT FROM CEMENT KILN FLUE DUST WHICH COMPRISES THE STEPS OF CARBONATING THE DUST, HYDRATING THE DUST, FORMING THE DUST INTO PELLETS SUBSTANTIALLY ALL OF WHICH WILL PASS THROUGH AN 8 MESH SCREEN AND BE RETAINED ON A 100 MESH SCREEN, AND REGULATING THE TOTAL WATER CONTENT OF THE PELLETS AT ABOUT 6.0 TO ABOUT 17 PER CENT BY WEIGHT.
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) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |