US3066492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the liquefaction of a gas
Assignee: Air Liquide SA
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Filing: 1960-05-09
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Granted: 1962-12-04
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Expires: 1980-05-09
Abstract
No abstract record available.
Inventors
- 👤 Jacques F Grunberg
- 👤 Brunand Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:41
CPC Classifications
F; F25; F25J; F25J1/00; F25J1/02; F25J1/0243; F25J1/0257; F25J1/0262; F25J1/0264; F25J1/0265; F25J1/0002; F25J1/0022; F25J1/003; F25J1/0032; F25J1/004; F25J1/0047; F25J1/005; F25J1/0052; F25J1/006; F25J1/008; F25J1/0082; F25J1/0085; F25J1/0087; F25J1/0203; F25J1/0207; F25J2210/00; F25J2210/06; F25J2220/00; F25J2220/60; F25J2220/62; F25J2245/00; F25J2245/90
Claims Analysis
Total Claims: 0
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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) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |