US2903858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of liquefying gases
Assignee: Constock Liquid Methane Corp
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Filing: 1955-10-06
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Granted: 1959-09-15
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Expires: 1975-10-06
Abstract
No abstract record available.
Inventors
- 👤 Philip E Bocquet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:08
CPC Classifications
F; F25; F25J; F25J1/00; F25J1/0002; F25J1/0022; F25J1/003; F25J1/0032; F25J1/0035; F25J1/0042; F25J1/02; F25J1/0201; F25J1/0202; F25J1/0203; F25J1/0208; F25J1/0211; F25J1/0219; F25J2205/00; F25J2205/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE PROCESS OF AT LEAST PARTIAL LIQUEFACTION OF A FLUID STREAM BY A REDUCTION IN THE TEMPERATURE AND PRESSURE THEREOF WHICH COMPRISES: (A) PASSING SUCH STREAM THROUGH A TURBO-EXPANDER TO EFFECT A PARTIAL REDUCTION IN PRESSURE AND TEMPERATURE OF THE STREAM ACCOMPANIED BY A PARTIAL LIQUEFACTION THEREOF, (B) SEPARATING THE LIQUID FROM THE EFFLUENT OF SAID EXPANDER, (C) PASSING THE GASEOUS REMAINDER OF SUCH EFFLUENT THROUGH A SECOND
Claim 2
Dependent Claim
68 words
THE PROCESS OF AT LEAST PARTIAL LIQUEFACTION OF A FLUID STREAM BY A REDUCTION IN THE TEMPERATURE AND PRESSURE THEREOF WHICH COMPRISES: (A) PASSING SUCH STREAM THROUGH A TURBO-EXPANDER TO EFFECT A PARTIAL REDUCTION IN PRESSURE AND TEMPERATURE OF THE STREAM ACCOMPANIED BY A PARTIAL LIQUEFACTION THEREOF, (B) SEPARATING THE LIQUID FROM THE EFFLUENT OF SAID EXPANDER, (C) PASSING THE GASEOUS REMAINDER OF SUCH EFFLUENT THROUGH A SECOND
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) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |