US2627318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration method of recovering hydrocarbons from gas mixtures
Assignee: ExxonMobil Oil Corp
•
Filing: 1949-08-08
•
Granted: 1953-02-03
•
Expires: 1969-08-08
Abstract
No abstract record available.
Inventors
- 👤 Swerdloff Will
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:48
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0204; F25J3/0209; C; C07; C07C; C07C7/00; C07C7/005; F25J3/0228; F25J3/0233; F25J3/0242; F25J3/0247; F25J2200/00; F25J2200/70; F25J2200/72; F25J2205/00; F25J2205/02; F25J2205/04; F25J2215/00; F25J2215/64; F25J2215/66; F25J2270/00; F25J2270/12; F25J2270/60; Y; Y10; Y10S; Y10S203/00; Y10S203/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1956-02-03 | 1956-08-04 | 1957-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-03 | 1960-08-04 | 1961-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-03 | 1964-08-04 | 1965-02-03 | $7700.00 | Window Closed / Lapsed |