US1945367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the separation of gaseous mixtures
Assignee: Air Liquide SA
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Filing: 1932-06-13
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Granted: 1934-01-30
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Expires: 1952-06-13
Abstract
No abstract record available.
Inventors
- 👤 Gobert Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:24
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0204; F25J3/0219; F25J3/0228; F25J3/0233; F25J3/0238; F25J3/0252; F25J3/0257; F25J2200/00; F25J2200/04; F25J2200/06; F25J2200/50; F25J2200/52; F25J2200/54; F25J2200/80; F25J2210/00; F25J2210/14; F25J2215/00; F25J2215/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1937-01-29 | 1937-07-31 | 1938-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-01-29 | 1941-07-31 | 1942-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-01-29 | 1945-07-31 | 1946-01-30 | $7700.00 | Window Closed / Lapsed |