US3413816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquefaction of natural gas
Assignee: Phillips Petroleum Co
•
Filing: 1966-09-07
•
Granted: 1968-12-03
•
Expires: 1986-09-07
Abstract
No abstract record available.
Inventors
- 👤 Marco Salvador S De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:39
CPC Classifications
F; F25; F25J; F25J1/00; F25J1/02; F25J1/0203; F25J1/0207; F25J1/0002; F25J1/0022; F25J1/003; F25J1/0047; F25J1/0052; F25J1/006; F25J1/008; F25J1/0082; F25J1/0085; F25J1/0087; F25J1/0243; F25J1/0244; F25J1/0257; F25J1/0262; F25J1/0264; F25J1/0265; F25J1/0267; F25J2220/00; F25J2220/60; F25J2220/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3350896A
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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) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |