US3402225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing vertical shaft kiln feed for production of portland cement
Assignee: Cameron and Jones Inc
•
Filing: 1966-10-07
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Granted: 1968-09-17
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Expires: 1986-10-07
Abstract
No abstract record available.
Inventors
- 👤 Russell J Cameron
- 👤 John W Hand
- 👤 Karl R Komarek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:07
CPC Classifications
C; C04; C04B; C04B7/00; C04B7/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PROCESS FOR THE PRODUCTION OF PORTLAND CEMENT CLINKER FROM CALCAREOUS COMPOUNDS, ARGILLACEOUS COMPOUNDS, AND MISCELLANEOUS CORRECTIVE COMPONENTS IN A VERTICAL SHAFT KILN, COMPRISING DECARBONATING THE CALCAREOUS RAW MATERIALS AT A TEMPERATURE OF AT LEAST 1400* F., DEHYDRATING THE OTHER RAW MATERIALS AT A TEMPERATURE AT LEAST 1000*F., MIXING THE DECARBONATED MATERIALS AND THE DEHYDRATED MATERIALS TOGETHER AND BRIQUETTING THE RESULTANT MIXTURE AT A BRIQUETTING PRESSURE OF AT LEAST 5000 P.S.I., AND CLINKERING THE BRIQUETTES AT A TEMPERATURE OF AT LEAST 2350*F. IN A VERTICAL SHAFT KILN, TO THEREBY PRODUCE PORTLAND CEMENT CLINKER.
Claim 2
Dependent Claim
93 words
A PROCESS FOR THE PRODUCTION OF PORTLAND CEMENT CLINKER FROM CALCAREOUS COMPOUNDS, ARGILLACEOUS COMPOUNDS, AND MISCELLANEOUS CORRECTIVE COMPONENTS IN A VERTICAL SHAFT KILN, COMPRISING DECARBONATING THE CALCAREOUS RAW MATERIALS AT A TEMPERATURE OF AT LEAST 1400* F., DEHYDRATING THE OTHER RAW MATERIALS AT A TEMPERATURE AT LEAST 1000*F., MIXING THE DECARBONATED MATERIALS AND THE DEHYDRATED MATERIALS TOGETHER AND BRIQUETTING THE RESULTANT MIXTURE AT A BRIQUETTING PRESSURE OF AT LEAST 5000 P.S.I., AND CLINKERING THE BRIQUETTES AT A TEMPERATURE OF AT LEAST 2350*F. IN A VERTICAL SHAFT KILN, TO THEREBY PRODUCE PORTLAND CEMENT CLINKER.
References Cited (Backward Citations)
US2654594A
Cited
US3098886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |