US2760356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of liquefying gases
Assignee: National Research Development Corp UK
•
Filing: 1953-04-08
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Granted: 1956-08-28
•
Expires: 1973-04-08
Abstract
No abstract record available.
Inventors
- 👤 Sixsmith Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:37
CPC Classifications
F; F25; F25J; F25J1/00; F25J1/0002; F25J1/0012; F02; F02K; F02K3/00; F02K3/08; F02K3/10; F25J1/003; F25J1/0032; F25J1/0035; F25J1/0037; F25J1/004; F25J1/02; F25J1/0201; F25J1/0243; F25J1/0257; F25J2205/00; F25J2205/24; F25J2240/00; F25J2240/02; F25J2290/00; F25J2290/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
THE METHOD OF LIQUEFYING A GAS COMPRISING COMPRESSING THE GAS, DIVIDING THE COMPRESSED GAS INTO TWO
Claim 2
Independent Claim
16 words
THE METHOD OF LIQUEFYING A GAS COMPRISING COMPRESSING THE GAS, DIVIDING THE COMPRESSED GAS INTO TWO
References Cited (Backward Citations)
US1027863A
Cited
GB191501086A
Cited
US1264845A
Cited
US1901389A
Cited
US2165994A
Cited
US2529880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |