US3018632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclic process for transporting methane
Assignee: Hydrocarbon Research Inc
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Filing: 1959-05-11
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Granted: 1962-01-30
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Expires: 1979-05-11
Abstract
No abstract record available.
Inventors
- 👤 Percival C Keith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:56
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; F25J3/044; F17; F17C; F17C9/00; F17C9/02; F17C9/04; F25J1/00; F25J1/0002; F25J1/0012; F25J1/0015; F25J1/0022; F25J1/02; F25J1/0203; F25J1/0204; F25J1/0221; F25J1/0223; F25J1/0228; F25J1/0234; F25J1/0243; F25J1/0257; F25J1/0262; F25J1/0264; F25J3/04248; F25J3/04254; F25J3/0426; F25J3/04266; F25J2210/00; F25J2210/06; F25J2210/42; F25J2210/62; F25J2230/00; F25J2230/30
Claims Analysis
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References Cited (Backward Citations)
FR736736A
Cited
US2328647A
Cited
DE1036884B
Cited
DE1053011B
Cited
US2909906A
Cited
US2903860A
Cited
US2975604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-29 | 1965-07-31 | 1966-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-29 | 1969-07-31 | 1970-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-29 | 1973-07-31 | 1974-01-30 | $7700.00 | Window Closed / Lapsed |