US2658360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transportation of natural gas
Assignee: Chemical Foundation Inc
•
Filing: 1946-05-08
•
Granted: 1953-11-10
•
Expires: 1966-05-08
Abstract
No abstract record available.
Inventors
- 👤 Miller Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:35
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0228; F25J3/0257; F25J3/0204; F25J3/0209; F25J3/0233; F25J2200/00; F25J2200/02; F25J2200/50; F25J2200/74; F25J2230/00; F25J2230/20; F25J2230/60; F25J2240/00; F25J2240/02; F25J2240/12; F25J2270/00; F25J2270/04; F25J2270/06; Y; Y10; Y10S; Y10S62/00; Y10S62/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
THE METHOD OF PREPARING, FROM NATURAL GAS CONTAINING A SUBSTANTIAL FRACTION OF NITROGEN, A GASEOUS FUEL SUITABLE FOR ECONOMICAL LONG DISTANCE PIPE LINE TRANSPORTATION WHICH COMPRISES COOLING A MIXTURE DERIVED FROM SAID NATURAL GAS AND CONTAINING NITROGEN AND METHANE UNDER A PRESSURE IN THE RANGE OF 400 TO 600 POUNDS PER SQUARE INCH TO A TEMPERATURE AT WHICH AT LEAST A SUBSTANTIAL PORTION OF THE METHANE IS LIQUEFIED, SEPARATING THE MIXTURE WHILE SUBSTANTIALLY MAINTAINING THE PRESSURE INTO A LIQUID PORTION IN WHICH THE RATIO OF METHANE TO NITROGEN IS SUBSTANTIALLY GREATER THAN IT IS IN THE MIXTURE, AND A VAPOR PORTION IN WHICH THE RATIO OF METHANE TO NITROGEN IS SUBSTANTIALLY LESS THAN IT IS IN THE MIXTURE, EVAPORATING THE LIQUID IN HEAT EXCHANGE RELATIONSHIP WITH ANOTHER PORTION OF THE MIXTURE WHILE MAINTAINING ON THE LIQUID A PRESSURE NOT LESS THAN HALF OF THAT MAINTAINED ON THE MIXTURE AND PASSING THE VAPOR EVOLVED BY EVAPORATION OF THE LIQUID IN
Claim 2
Independent Claim
159 words
THE METHOD OF PREPARING, FROM NATURAL GAS CONTAINING A SUBSTANTIAL FRACTION OF NITROGEN, A GASEOUS FUEL SUITABLE FOR ECONOMICAL LONG DISTANCE PIPE LINE TRANSPORTATION WHICH COMPRISES COOLING A MIXTURE DERIVED FROM SAID NATURAL GAS AND CONTAINING NITROGEN AND METHANE UNDER A PRESSURE IN THE RANGE OF 400 TO 600 POUNDS PER SQUARE INCH TO A TEMPERATURE AT WHICH AT LEAST A SUBSTANTIAL PORTION OF THE METHANE IS LIQUEFIED, SEPARATING THE MIXTURE WHILE SUBSTANTIALLY MAINTAINING THE PRESSURE INTO A LIQUID PORTION IN WHICH THE RATIO OF METHANE TO NITROGEN IS SUBSTANTIALLY GREATER THAN IT IS IN THE MIXTURE, AND A VAPOR PORTION IN WHICH THE RATIO OF METHANE TO NITROGEN IS SUBSTANTIALLY LESS THAN IT IS IN THE MIXTURE, EVAPORATING THE LIQUID IN HEAT EXCHANGE RELATIONSHIP WITH ANOTHER PORTION OF THE MIXTURE WHILE MAINTAINING ON THE LIQUID A PRESSURE NOT LESS THAN HALF OF THAT MAINTAINED ON THE MIXTURE AND PASSING THE VAPOR EVOLVED BY EVAPORATION OF THE LIQUID IN
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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) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |