US2158650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of oxidation products of paraffin hydrocarbons
Assignee: IG Farbenindustrie AG
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Filing: 1937-01-16
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Granted: 1939-05-16
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Expires: 1957-01-16
Abstract
No abstract record available.
Inventors
- 👤 Beck Christoph
- 👤 Kremp Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:18
CPC Classifications
C; C10; C10M; C10M177/00; C10M109/00; C10M109/02; C10M143/00; C10M143/18; C10M169/00; C10M169/04; C10M2203/00; C10M2203/10; C10M2203/1006; C10N; C10N2060/00; C10N2060/04
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) | 1942-05-15 | 1942-11-14 | 1943-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-05-15 | 1946-11-14 | 1947-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-05-15 | 1950-11-14 | 1951-05-16 | $7700.00 | Window Closed / Lapsed |