US3065607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for fractionating gaseous mixtures
Assignee: Air Products and Chemicals Inc
•
Filing: 1958-02-14
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Granted: 1962-11-27
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Expires: 1978-02-14
Abstract
No abstract record available.
Inventors
- 👤 Clarence J Schilling
- 👤 Claitor Lilburn Carroll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:59
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/08; F25J2210/00; F25J2210/40; Y; Y10; Y10S; Y10S62/00; Y10S62/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
METHOD OF REMOVING HIGH BOILING POINT IMPURITIES FROM A GASEOUS MIXTURE PRIOR TO SEPARATION BY A LOW TEMPERATURE FRACTIONATING OPERATION, WHICH COMPRISES COOLING AND PARTLY LIQUEFYING GASEOUS MIXTURE TO BE SEPARATED, TRANSFERRING SUBSTANTIALLY THE TOTAL IMPURITIES OF THE GASEOUS MIXTURE TO THE LIQUID PORTION OF THE GASEOUS MIXTURE AND PROVIDING A VAPOR PORTION OF THE GASEOUS MIXTURE SUBSTANTIALLY FREE OF IMPURITIES, EFFECTING SUBSTANTIALLY COMPLETE VAPORIZATION OF THE LIQUID PORTION CONTAINING THE IMPURITIES TO CONCENTRATE THE IMPURITIES IN THE REMAINDER, REMOVING THE REMAINDER, PASSING VAPOR PORTION SUBSTANTIALLY FREE OF IMPURITIES IN HEAT EXCHANGE EFFECTING RELATION WITH THE LIQUID PORTION TO LIQUEFY THE VAPOR PORTION AND EFFECT AT LEAST A PART OF THE VAPORIZATION OF THE
Claim 2
Dependent Claim
114 words
METHOD OF REMOVING HIGH BOILING POINT IMPURITIES FROM A GASEOUS MIXTURE PRIOR TO SEPARATION BY A LOW TEMPERATURE FRACTIONATING OPERATION, WHICH COMPRISES COOLING AND PARTLY LIQUEFYING GASEOUS MIXTURE TO BE SEPARATED, TRANSFERRING SUBSTANTIALLY THE TOTAL IMPURITIES OF THE GASEOUS MIXTURE TO THE LIQUID PORTION OF THE GASEOUS MIXTURE AND PROVIDING A VAPOR PORTION OF THE GASEOUS MIXTURE SUBSTANTIALLY FREE OF IMPURITIES, EFFECTING SUBSTANTIALLY COMPLETE VAPORIZATION OF THE LIQUID PORTION CONTAINING THE IMPURITIES TO CONCENTRATE THE IMPURITIES IN THE REMAINDER, REMOVING THE REMAINDER, PASSING VAPOR PORTION SUBSTANTIALLY FREE OF IMPURITIES IN HEAT EXCHANGE EFFECTING RELATION WITH THE LIQUID PORTION TO LIQUEFY THE VAPOR PORTION AND EFFECT AT LEAST A PART OF THE VAPORIZATION OF THE
References Cited (Backward Citations)
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US2327459A
Cited
US2572933A
Cited
US2688238A
Cited
US2664719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-26 | 1966-05-28 | 1966-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-26 | 1970-05-28 | 1970-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-26 | 1974-05-28 | 1974-11-27 | $7700.00 | Window Closed / Lapsed |