US2857244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of highdensity, anhydrous calcium chloride
Assignee: Honeywell International Inc
•
Filing: 1955-01-03
•
Granted: 1958-10-21
•
Expires: 1975-01-03
Abstract
No abstract record available.
Inventors
- 👤 Charles A Graves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:13
CPC Classifications
C; C01; C01F; C01F11/00; C01F11/20; C01F11/24; C01F11/30; Y; Y10; Y10S; Y10S159/00; Y10S159/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A PROCESS OF PREPARING HIGH BULK-DENSITY, SOLID, DEHYDRATED CALCIUM CHLORIDE WHICH COMPRISES EVAPORATING AN AQUEOUS CALCIUM CHLORIDE SOLUTION TO EXPEL A PORTION OF THE WATER THEREFROM AT A TEMPERATURE OF AT LEAST ABOUT 200*C. AND BELOW THAT TEMPERATURE AT WHICH CALCIUM CHLORIDE MONOHYDRATE DEHYDRATES, AND UNDER SUPERATMOSPHERIC PRESSURE SUFFICIENT TO MAINTAIN A LIQUID PHASE AT THE EVAPORATION TEMPERATURE WITHIN THE RANGE OF 5 P.S.I.G.-25 P.S.I.G., EFFECTING THE EVAPORATING AS AFORESAID UNTIL A FLOWABLE SLURRY OF SOLID CALCIUM CHLORIDE MONOHYDRATE IN CALCIUM CHLORIDE SOLUTION IS FORMED, SIAD SLURRY HAVING AN OVERALL COMPOSITION APPROXIMATING THAT OF CALCIUM CHLORIDE MONOHYDRATE, AND COOLING SAID SLURRY UNTIL SOLIDIFIED UNDER SUPERATMOSPHERIC PRESSURE AT LEAST THAT EMPLOYED DURING THE AFORESAID EVAPORATING THEREBY TO OBTAIN A HIGH BULK-DENSITY, SOLID, DEHYDRATED CALCIUM CHLORIDE.
Claim 2
Dependent Claim
124 words
A PROCESS OF PREPARING HIGH BULK-DENSITY, SOLID, DEHYDRATED CALCIUM CHLORIDE WHICH COMPRISES EVAPORATING AN AQUEOUS CALCIUM CHLORIDE SOLUTION TO EXPEL A PORTION OF THE WATER THEREFROM AT A TEMPERATURE OF AT LEAST ABOUT 200*C. AND BELOW THAT TEMPERATURE AT WHICH CALCIUM CHLORIDE MONOHYDRATE DEHYDRATES, AND UNDER SUPERATMOSPHERIC PRESSURE SUFFICIENT TO MAINTAIN A LIQUID PHASE AT THE EVAPORATION TEMPERATURE WITHIN THE RANGE OF 5 P.S.I.G.-25 P.S.I.G., EFFECTING THE EVAPORATING AS AFORESAID UNTIL A FLOWABLE SLURRY OF SOLID CALCIUM CHLORIDE MONOHYDRATE IN CALCIUM CHLORIDE SOLUTION IS FORMED, SIAD SLURRY HAVING AN OVERALL COMPOSITION APPROXIMATING THAT OF CALCIUM CHLORIDE MONOHYDRATE, AND COOLING SAID SLURRY UNTIL SOLIDIFIED UNDER SUPERATMOSPHERIC PRESSURE AT LEAST THAT EMPLOYED DURING THE AFORESAID EVAPORATING THEREBY TO OBTAIN A HIGH BULK-DENSITY, SOLID, DEHYDRATED CALCIUM CHLORIDE.
References Cited (Backward Citations)
US1660053A
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US1801000A
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US1922697A
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US1956138A
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US2556184A
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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) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |