US1922918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of liquid, in particular aromatic, hydrocarbons
Assignee: IG Farbenindustrie AG
•
Filing: 1931-04-15
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Granted: 1933-08-15
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Expires: 1951-04-15
Abstract
No abstract record available.
Inventors
- 👤 Winkler Fritz
- 👤 Haeuber Hans
- 👤 Feiler Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:26
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/76; C07C2521/00; C07C2521/06; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/943
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) | 1936-08-14 | 1937-02-13 | 1937-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-08-14 | 1941-02-13 | 1941-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-08-14 | 1945-02-13 | 1945-08-15 | $7700.00 | Window Closed / Lapsed |