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Patent US3271965A successfully refreshed from Google Patents.
US3271965A
Expired / Lapsed
US
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Methane liquefaction process
Assignee: Chicago Bridge and Iron Co
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Filing: 1964-01-08
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Granted: 1966-09-13
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Expires: 1984-01-08
Abstract
No abstract record available.
Inventors
- 👤 James B Maher
- 👤 Mair James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:05
CPC Classifications
F; F25; F25J; F25J1/00; F25J1/003; F25J1/0047; F25J1/0052; F25J1/0002; F25J1/0022; F25J1/0025; F25J1/0032; F25J1/0045; F25J1/02; F25J1/0203; F25J1/0208; F25J1/0221; F25J1/0243; F25J1/0244; F25J2210/00; F25J2210/62; F25J2220/00; F25J2220/60; F25J2220/62; F25J2230/00; F25J2230/08; F25J2230/30; F25J2235/00; F25J2235/60; F25J2245/00; F25J2245/90; F25J2270/00; F25J2270/90; F25J2290/00; F25J2290/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
THE METHOD OF LIQUEFYING METHANE WHICH COMPRISES SUBJECTING INCOMING METHANE GAS TO A SUBSTANTIALLY INCREASED PREDETERMINED PRESSURED, SUBSTANTIALLY LOWERING THE TEMPERATURE OF THE INCOMING METHANE BY MEANS OF A CLOSED-LOOP REFRIGERATION SYSTEM, FURTHER LOWERING THE TEMPERATURES OF THE SO-COOLED INCOMING METHANE GAS BY MEANS OF LIQUID METHANE REMOVED FROM AN INSULATED MAIN STORAGE
Claim 2
Independent Claim
53 words
THE METHOD OF LIQUEFYING METHANE WHICH COMPRISES SUBJECTING INCOMING METHANE GAS TO A SUBSTANTIALLY INCREASED PREDETERMINED PRESSURED, SUBSTANTIALLY LOWERING THE TEMPERATURE OF THE INCOMING METHANE BY MEANS OF A CLOSED-LOOP REFRIGERATION SYSTEM, FURTHER LOWERING THE TEMPERATURES OF THE SO-COOLED INCOMING METHANE GAS BY MEANS OF LIQUID METHANE REMOVED FROM AN INSULATED MAIN STORAGE
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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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |