US3398543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon gas liquefaction by admixed gas-liquid expansion and heat exchange
Assignee: AMF Inc
•
Filing: 1966-03-23
•
Granted: 1968-08-27
•
Expires: 1986-03-23
Abstract
No abstract record available.
Inventors
- 👤 Horton John Leroy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:23
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/06; C; C10; C10G; C10G5/00; C10G5/06; F25J2210/00; F25J2210/60
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1020102A
Cited
US1020103A
Cited
US1804432A
Cited
US2209534A
Cited
US2538235A
Cited
US2722105A
Cited
US3116136A
Cited
US3119677A
Cited
US3212277A
Cited
US3240023A
Cited
US3212278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |