Patent US2582068A successfully refreshed from Google Patents.
US2582068A
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Method and apparatus for separating gases
Assignee: Elliott Co
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Filing: 1948-12-30
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Granted: 1952-01-08
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Expires: 1968-12-30
Abstract
No abstract record available.
Inventors
- 👤 Roberts Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:00
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0228; F25J3/0252; F25J3/0204; F25J3/0219; F25J3/0233; F25J2200/00; F25J2200/80; F25J2210/00; F25J2210/12; F25J2215/00; F25J2215/60; F25J2270/00; F25J2270/02; F25J2270/04; F25J2270/14; F25J2270/40; F25J2270/42; F25J2270/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1212455A
Cited
US1537193A
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US1620192A
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US1782287A
Cited
FR658477A
Cited
US2071763A
Cited
US1865125A
Cited
US1958553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |