US3092673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for crystal purification
Assignee: Phillips Petroleum Co
•
Filing: 1957-10-28
•
Granted: 1963-06-04
•
Expires: 1977-10-28
Abstract
No abstract record available.
Inventors
- 👤 Elton E Rush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:21
CPC Classifications
B; B01; B01D; B01D9/00; B01D9/0004; B01D9/0013; B01D9/004; Y; Y10; Y10S; Y10S585/00; Y10S585/949; Y10S585/956
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A CONTINUOUS PROCESS FOR SEPARATING A CRYSTALLIZABLE COMPONENT FROM A LIQUID MULTI-COMPONENT MIXTURE WHICH COMPRISES COOLING SAID MIXTURE SO AS TO CRYSTALLIZE SAID COMPONENT, SEPARATING THE CRYSTALS FROM THE LOWER MELTING COMPONENTS OF SAID MIXTURE, PASSING SAID CRYSTALS THROUGH A PURIFICATION ZONE AS A UNIFORM CONTIGUOUS MASS, PASSING A REFLUX LIQUID IN COUNTERCURRENT FLOW THROUGH SAID CRYSTAL MASS, PASSING A FLUID OF CONTROLLED TEMPERATURE IN CONTACT WITH THE OUTER SURFACE OF THE PURIFICATION ZONE TO MAINTAIN THE REGION ADJOINING SAID SURFACE AT A SUBSTANTIALLY UNIFORM TEMPERATURE WITHIN THE RANGE OF BETWEEN ABOUT 30*F. BELOW AND ABOUT 60*F. ABOVE THE TEMPERATURE OF THE CRYSTALS ENTERING SAID ZONE, VARYING THE TEMPERATURE OF SAID REGION SO THAT THE TEMPERATURE DIFFERENTIAL BETWEEN THE TEMPERATURE OF SAID FLUID AND THE TEMPERATURE OF THE
Claim 2
Dependent Claim
128 words
A CONTINUOUS PROCESS FOR SEPARATING A CRYSTALLIZABLE COMPONENT FROM A LIQUID MULTI-COMPONENT MIXTURE WHICH COMPRISES COOLING SAID MIXTURE SO AS TO CRYSTALLIZE SAID COMPONENT, SEPARATING THE CRYSTALS FROM THE LOWER MELTING COMPONENTS OF SAID MIXTURE, PASSING SAID CRYSTALS THROUGH A PURIFICATION ZONE AS A UNIFORM CONTIGUOUS MASS, PASSING A REFLUX LIQUID IN COUNTERCURRENT FLOW THROUGH SAID CRYSTAL MASS, PASSING A FLUID OF CONTROLLED TEMPERATURE IN CONTACT WITH THE OUTER SURFACE OF THE PURIFICATION ZONE TO MAINTAIN THE REGION ADJOINING SAID SURFACE AT A SUBSTANTIALLY UNIFORM TEMPERATURE WITHIN THE RANGE OF BETWEEN ABOUT 30*F. BELOW AND ABOUT 60*F. ABOVE THE TEMPERATURE OF THE CRYSTALS ENTERING SAID ZONE, VARYING THE TEMPERATURE OF SAID REGION SO THAT THE TEMPERATURE DIFFERENTIAL BETWEEN THE TEMPERATURE OF SAID FLUID AND THE TEMPERATURE OF THE
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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |