US2765873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of purifying chlorine
Assignee: Diamond Shamrock Corp
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Filing: 1948-10-12
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Granted: 1956-10-09
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Expires: 1968-10-12
Abstract
No abstract record available.
Inventors
- 👤 Richard E Hulme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:59
CPC Classifications
C; C01; C01B; C01B7/00; C01B7/01; C01B7/07; C01B7/0743; F; F25; F25J; F25J3/00; F25J3/08; F25J2210/00; F25J2210/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
THE METHOD OF RECOVERING SUBSTANTIALLY PURE CHLORINE FROM A GASEOUS MIXTURE OF CHLORINE WITH INERT ATMOSPHERIC GASES, WHICH INCLUDES INTRODUCING SAID MIXTURE INTO AN ABSORPTION ZONE MAINTAINED AT A SUPER-ATMOSPHERIC PRESSURE OF BETWEEN ABOUT 30 AND BOUT 210 POUNDS PER SQUARE INCH, INTRODUCING CARBON TETRACHLORIDE INTO THE ZONE AT A TEMPERATURE WITHIN THE RANGE FROM -9" TO ABOUT 90* F. AND AT A POINT REMOTE FROM THE POINT OF INTRODUCTION OF THE GASEOUS MIXTURE, COUNTERCURRENTLY CONTACTING THE GASEOUS MIXTURE AND THE CARBON TETRACHLORIDE IN THE ZONE TO FORM A SOLUTION OF CHLORINE IN CARBON TETRACHLORIDE, MAINTAINING A TEMPARATURE GRADIENT IN THE SOLUTION DURING PASSAGE THROUGH THE ZONE WITHIN THE RANGE FROM ABOUR 50* TO ABOUT 95* F. ABOVE THE TEMPERATURE OF THE ENTERING CARBON TETRACHLORIDE AND WITHDRAWING THE SOLUTION FROM THE ZONE IN THE REGION OF THE INTRODUCTION OF THE GASEOUS MIXTURE THEREINTO AT SUBSTANTIALLY THE MAXIMUM TEMPRATURE ACHIEVED IN THE ZONE AND RECOVERING PURIFIED CHLORINE SUBSTANTIALLY FREE FROM INERT ATMOSPHERIC GASES FROM THE SOLUTION.
Claim 2
Independent Claim
165 words
THE METHOD OF RECOVERING SUBSTANTIALLY PURE CHLORINE FROM A GASEOUS MIXTURE OF CHLORINE WITH INERT ATMOSPHERIC GASES, WHICH INCLUDES INTRODUCING SAID MIXTURE INTO AN ABSORPTION ZONE MAINTAINED AT A SUPER-ATMOSPHERIC PRESSURE OF BETWEEN ABOUT 30 AND BOUT 210 POUNDS PER SQUARE INCH, INTRODUCING CARBON TETRACHLORIDE INTO THE ZONE AT A TEMPERATURE WITHIN THE RANGE FROM -9" TO ABOUT 90* F. AND AT A POINT REMOTE FROM THE POINT OF INTRODUCTION OF THE GASEOUS MIXTURE, COUNTERCURRENTLY CONTACTING THE GASEOUS MIXTURE AND THE CARBON TETRACHLORIDE IN THE ZONE TO FORM A SOLUTION OF CHLORINE IN CARBON TETRACHLORIDE, MAINTAINING A TEMPARATURE GRADIENT IN THE SOLUTION DURING PASSAGE THROUGH THE ZONE WITHIN THE RANGE FROM ABOUR 50* TO ABOUT 95* F. ABOVE THE TEMPERATURE OF THE ENTERING CARBON TETRACHLORIDE AND WITHDRAWING THE SOLUTION FROM THE ZONE IN THE REGION OF THE INTRODUCTION OF THE GASEOUS MIXTURE THEREINTO AT SUBSTANTIALLY THE MAXIMUM TEMPRATURE ACHIEVED IN THE ZONE AND RECOVERING PURIFIED CHLORINE SUBSTANTIALLY FREE FROM INERT ATMOSPHERIC GASES FROM THE SOLUTION.
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) | 1959-10-09 | 1960-04-09 | 1960-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-09 | 1964-04-09 | 1964-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-09 | 1968-04-09 | 1968-10-09 | $7700.00 | Window Closed / Lapsed |