US3285023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlling crystallizer cooling responsive to temperature and freezing point of thematerial
Assignee: Phillips Petroleum Co
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Filing: 1963-10-24
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Granted: 1966-11-15
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Expires: 1983-10-24
Abstract
No abstract record available.
Inventors
- 👤 Daniel M Vesper
- 👤 Glenn A Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:45
CPC Classifications
B; B01; B01D; B01D9/00; B01D9/02; B01D9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN A PROCESS WHEREIN A FEED MIXTURE IS COOLED TO CRYSTALLIZE A PORTION THEREOF TO FORM A SLURRY; THE METHOD OF REGULATING THE PROCESS TO PRODUCE A SLURRY HAVING A SUBSTANTIALLY CONSTANT SOLIDS CONTENT WHICH COMPRISES MEASURING THE TEMPERATURE OF THE SLURRY AND ESTABLISHING A FIRST SIGNAL REPRESENTATIVE OF SUCH TEMPERATURE, MEASURING A PROPERTY OF THE FEED MIXTURE WHICH IS REPRESENTATIVE OF THE FREEZING POINT THEREOF AND ESTABLISHING A SECOND SIGNAL REPRESENTATIVE OF SUCH MEASURED PROPERTY, COMPARING SAID FIRST AND SECOND SIGNALS, AND REGULATING THE AMOUNT OF
Claim 2
Dependent Claim
87 words
IN A PROCESS WHEREIN A FEED MIXTURE IS COOLED TO CRYSTALLIZE A PORTION THEREOF TO FORM A SLURRY; THE METHOD OF REGULATING THE PROCESS TO PRODUCE A SLURRY HAVING A SUBSTANTIALLY CONSTANT SOLIDS CONTENT WHICH COMPRISES MEASURING THE TEMPERATURE OF THE SLURRY AND ESTABLISHING A FIRST SIGNAL REPRESENTATIVE OF SUCH TEMPERATURE, MEASURING A PROPERTY OF THE FEED MIXTURE WHICH IS REPRESENTATIVE OF THE FREEZING POINT THEREOF AND ESTABLISHING A SECOND SIGNAL REPRESENTATIVE OF SUCH MEASURED PROPERTY, COMPARING SAID FIRST AND SECOND SIGNALS, AND REGULATING THE AMOUNT OF
References Cited (Backward Citations)
US2940272A
Cited
US3093649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |