Patent US2994644A successfully refreshed from Google Patents.
US2994644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification and drying of liquids
Assignee: Phillips Petroleum Co
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Filing: 1958-03-03
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Granted: 1961-08-01
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Expires: 1978-03-03
Abstract
No abstract record available.
Inventors
- 👤 Harris A Clay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:14
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A PROCESS FOR THE PURIFICATION OF A LIQUID CONTAINING DISSOLVED WATER IN AN AMOUNT PROPORTIONAL TO THE TEMPERATURE OF SAID LIQUID AND ENTRAINED WATER WHICH COMPRISES HEATING SAID LIQUID TO A TEMPERATURE SUFFICIENT TO DISSOLVE THE ENTRAINED WATER, INTRODUCING THE HEATED LIQUID TO A FRACTIONATION ZONE, REMOVING FROM THE UPPER PORTION OF SAID ZONE A VAPOR STREAM CONCENTRATED IN WATER,
Claim 2
Dependent Claim
60 words
A PROCESS FOR THE PURIFICATION OF A LIQUID CONTAINING DISSOLVED WATER IN AN AMOUNT PROPORTIONAL TO THE TEMPERATURE OF SAID LIQUID AND ENTRAINED WATER WHICH COMPRISES HEATING SAID LIQUID TO A TEMPERATURE SUFFICIENT TO DISSOLVE THE ENTRAINED WATER, INTRODUCING THE HEATED LIQUID TO A FRACTIONATION ZONE, REMOVING FROM THE UPPER PORTION OF SAID ZONE A VAPOR STREAM CONCENTRATED IN WATER,
References Cited (Backward Citations)
US2322881A
Cited
US2366899A
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US2368497A
Cited
US2463188A
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US2485329A
Cited
US2600182A
Cited
US2667451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |