US2015347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating liquids with gases or vapors and apparatus therefor
Assignee: IG Farbenindustrie AG
•
Filing: 1928-08-11
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Granted: 1935-09-24
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Expires: 1948-08-11
Abstract
No abstract record available.
Inventors
- 👤 Luther Martin
- 👤 Goetze Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:38
CPC Classifications
B; B01; B01J; B01J10/00; B01J2219/00; B01J2219/00049; B01J2219/00051
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) | 1938-09-23 | 1939-03-25 | 1939-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-09-23 | 1943-03-25 | 1943-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-09-23 | 1947-03-25 | 1947-09-24 | $7700.00 | Window Closed / Lapsed |