US2144692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the separation of gaseous mixtures
Assignee: Linde Air Products Co
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Filing: 1936-03-27
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Granted: 1939-01-24
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Expires: 1956-03-27
Abstract
No abstract record available.
Inventors
- 👤 Schuftan Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:46
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/14; B01D53/18; B01D53/1406; C; C01; C01B; C01B11/00; C01B11/02; C01B11/022; C01B7/00; C01B7/01; C01B7/07; C01B7/0743; C07; C07C; C07C7/00; C07C7/11
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) | 1942-01-23 | 1942-07-25 | 1943-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-01-23 | 1946-07-25 | 1947-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-01-23 | 1950-07-25 | 1951-01-24 | $7700.00 | Window Closed / Lapsed |