US1704751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of compounds from mixtures of oxygen-containing organic compounds
Assignee: IG Farbenindustrie AG
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Filing: 1927-02-03
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Granted: 1929-03-12
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Expires: 1947-02-03
Abstract
No abstract record available.
Inventors
- 👤 Luther Martin
- 👤 Jochheim Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:52
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/78; C07C45/80; C07C31/00; C07C31/02; C07C31/04; C07C45/783; C07C45/85
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) | 1932-03-11 | 1932-09-10 | 1933-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-03-11 | 1936-09-10 | 1937-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-03-11 | 1940-09-10 | 1941-03-12 | $7700.00 | Window Closed / Lapsed |