US3131045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for fractionating gaseous mixtures
Assignee: Air Products and Chemicals Inc
•
Filing: 1958-05-19
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Granted: 1964-04-28
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Expires: 1978-05-19
Abstract
No abstract record available.
Inventors
- 👤 Clarence J Schilling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:55
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; F25J3/04763; F25J3/04866; F25J3/04872; F25J3/04878; F25J3/04248; F25J3/04375; F25J3/04381; F25J3/04387; F25J3/044; F25J3/04406; F25J3/04412; F25J3/04424; F25J3/0443; F25J3/04769; F25J3/04781; F25J2235/00; F25J2235/02; F25J2235/50; F25J2240/00; F25J2240/02; F25J2240/10; F25J2240/12; F25J2240/22; F25J2240/40; F25J2240/42; F25J2240/48; F25J2250/00; F25J2250/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
THE METHOD OF SEPARATING GASEOUS MIXTURES BY FRACTIONATION IN A PLURALITY OF FRACTIONATING ZONES, COMPRISING CONTINUOUSLY WITHDRAWING LIQUID FROM ONE SAID ZONE, PASSING LIQUEFIED GAS FROM A REGION OF RELATIVELY HIGH PRESSURE TO SAID ONE ZONE AT A LOWER PRESSURE WHILE CAUSING THE LIQUEFIED GAS TO ACT ON A DISPLACEABLE MEMBER TO MOVE THE MEMBER, EXPANDING THE LIQUEFIED GAS THROUGH AN EXPANSION DEVISE IN SERIES WITH THE MEMBER, CONTINUOUSLY UTILIZING KINETIC ENERGY EXPANDED IN MOVING THE MEMBER TO ELEVATE THE WITHDRAWN LIQUID ABOVE THE POINT OF WITHDRAWAL, AND UTILIZING THE ELEVATED LIQUID TO PROVIDE WASH LIQUID IN A SAID ZONE OTHER THAN SAID ZONE.
Claim 2
Independent Claim
104 words
THE METHOD OF SEPARATING GASEOUS MIXTURES BY FRACTIONATION IN A PLURALITY OF FRACTIONATING ZONES, COMPRISING CONTINUOUSLY WITHDRAWING LIQUID FROM ONE SAID ZONE, PASSING LIQUEFIED GAS FROM A REGION OF RELATIVELY HIGH PRESSURE TO SAID ONE ZONE AT A LOWER PRESSURE WHILE CAUSING THE LIQUEFIED GAS TO ACT ON A DISPLACEABLE MEMBER TO MOVE THE MEMBER, EXPANDING THE LIQUEFIED GAS THROUGH AN EXPANSION DEVISE IN SERIES WITH THE MEMBER, CONTINUOUSLY UTILIZING KINETIC ENERGY EXPANDED IN MOVING THE MEMBER TO ELEVATE THE WITHDRAWN LIQUID ABOVE THE POINT OF WITHDRAWAL, AND UTILIZING THE ELEVATED LIQUID TO PROVIDE WASH LIQUID IN A SAID ZONE OTHER THAN SAID ZONE.
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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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |