US2953524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rectification process using cool shot in addition to reflux
Assignee: Individual
•
Filing: 1956-04-25
•
Granted: 1960-09-20
•
Expires: 1976-04-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Wilson C Rich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:22
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/143; Y; Y10; Y10S; Y10S203/00; Y10S203/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
IN A RECTIFICATION PROCESS CARRIED OUT IN A MULTIPLE PLATE COLUMN, THE IMPROVEMENT, WHEREBY VAPOR LOADING THROUGHOUT THE COLUMN IS SUBSTANTIALLY EQUALIZED, WHICH COMPRISES INTRODUCING NEAR THE TOP OF SAID COLUMN A COOL STREAM OF FINELY DIVIDED SOLID SHOT WHICH IS SUBSTANTIALLY COMPLETELY INERT WITH RESPECT TO THE COMPONENTS OF THE MIXTURE UNDERGOING RECTIFICATION AND WHICH IS ADATPED TO FLOW DOWNWARDLY ALONG WITH THE LIQUID IN SAID COLUMN, ALLOWING SAID SHOT TO FLOW DOWNWARDLY,
Claim 2
Dependent Claim
74 words
IN A RECTIFICATION PROCESS CARRIED OUT IN A MULTIPLE PLATE COLUMN, THE IMPROVEMENT, WHEREBY VAPOR LOADING THROUGHOUT THE COLUMN IS SUBSTANTIALLY EQUALIZED, WHICH COMPRISES INTRODUCING NEAR THE TOP OF SAID COLUMN A COOL STREAM OF FINELY DIVIDED SOLID SHOT WHICH IS SUBSTANTIALLY COMPLETELY INERT WITH RESPECT TO THE COMPONENTS OF THE MIXTURE UNDERGOING RECTIFICATION AND WHICH IS ADATPED TO FLOW DOWNWARDLY ALONG WITH THE LIQUID IN SAID COLUMN, ALLOWING SAID SHOT TO FLOW DOWNWARDLY,
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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) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |