Patent US3039274A successfully refreshed from Google Patents.
US3039274A
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Process and apparatus for purifying and separating compressed gas mixtures
Assignee: Union Carbide Corp
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Filing: 1958-03-28
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Granted: 1962-06-19
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Expires: 1978-03-28
Abstract
No abstract record available.
Inventors
- 👤 Ladislas C Matsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:32
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; F25J3/04248; F25J3/04254; F25J3/04284; F25J3/0429; F25J3/04303; F25J3/04406; F25J3/04412; F25J2200/00; F25J2200/50; F25J2200/52; F25J2205/00; F25J2205/24; F25J2210/00; F25J2210/50; F25J2290/00; F25J2290/62; Y; Y10; Y10S; Y10S62/00; Y10S62/912; Y10S62/913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE884203C
Cited
US2840994A
Cited
US2664719A
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US2699047A
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US2737784A
Cited
US2836040A
Cited
US2850880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |