Patent US2600494A successfully refreshed from Google Patents.
US2600494A
Expired / Lapsed
US
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Low-temperature separation process
Assignee: Phillips Petroleum Co
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Filing: 1948-12-20
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Granted: 1952-06-17
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Expires: 1968-12-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Bernardo J Ferro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:35
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0228; F25J3/0233; F25J3/0204; F25J3/0209; F25J3/0257; F25J2200/00; F25J2200/02; F25J2200/50; F25J2205/00; F25J2205/02; F25J2235/00; F25J2235/42; F25J2240/00; F25J2240/02; F25J2240/12; F25J2270/00; F25J2270/04; Y; Y10; Y10S; Y10S62/00; Y10S62/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A METHOD FOR THE SEPARATION OF NITROGEN FROM AN ADMIXTURE WITH HIGHER BOILING NORMALLY GASEOUS CONSTITUENTS COMPRISING INTRODUCING SAID ADMIXTURE AT A SUPERATMOSPHERIC PRESSURE AND AT ITS BOILING POINT UNDER SAID PRESSURE INTO A SEPARATION ZONE, REMOVING HIGHER BOILING NORMALLY AQUEOUS CONSTITUENTS FROM THE SEPARATION ZONE AS ONE PRODUCT OF THE PROCESS, REMOVING NITROGEN CONTAINING SOME OF THE HIGHER BOILING NORMALLY GASEOUS CONSTITUENTS AS A FIRST VAPOROUS STREAM FROM THE SEPARATION ZONE, ISENTROPICALLY EXPANDING A SECOND VAPOROUS STREAM COMPRISING THE NITROGEN AND SOME OF THE HIGHER BOILING NORMALLY GASEOUS CONSTITUENTS OF SAID FIRST VAPOROUS STREAM, TO PRODUCE SOME CONDENSATE, SEPARAT-
Claim 2
Independent Claim
100 words
A METHOD FOR THE SEPARATION OF NITROGEN FROM AN ADMIXTURE WITH HIGHER BOILING NORMALLY GASEOUS CONSTITUENTS COMPRISING INTRODUCING SAID ADMIXTURE AT A SUPERATMOSPHERIC PRESSURE AND AT ITS BOILING POINT UNDER SAID PRESSURE INTO A SEPARATION ZONE, REMOVING HIGHER BOILING NORMALLY AQUEOUS CONSTITUENTS FROM THE SEPARATION ZONE AS ONE PRODUCT OF THE PROCESS, REMOVING NITROGEN CONTAINING SOME OF THE HIGHER BOILING NORMALLY GASEOUS CONSTITUENTS AS A FIRST VAPOROUS STREAM FROM THE SEPARATION ZONE, ISENTROPICALLY EXPANDING A SECOND VAPOROUS STREAM COMPRISING THE NITROGEN AND SOME OF THE HIGHER BOILING NORMALLY GASEOUS CONSTITUENTS OF SAID FIRST VAPOROUS STREAM, TO PRODUCE SOME CONDENSATE, SEPARAT-
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) | 1955-06-17 | 1955-12-17 | 1956-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-17 | 1959-12-17 | 1960-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-17 | 1963-12-17 | 1964-06-17 | $7700.00 | Window Closed / Lapsed |