US2022279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of olefines and liquid hydrocarbons from methane
Assignee: IG Farbenindustrie AG
•
Filing: 1931-02-16
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Granted: 1935-11-26
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Expires: 1951-02-16
Abstract
No abstract record available.
Inventors
- 👤 Feiler Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:58
CPC Classifications
C; C07; C07C; C07C2/00; B; B01; B01J; B01J19/00; B01J19/02; B01J2219/00; B01J2219/02; B01J2219/025; B01J2219/0263; 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) | 1938-11-25 | 1939-05-27 | 1939-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-11-25 | 1943-05-27 | 1943-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-11-25 | 1947-05-27 | 1947-11-26 | $7700.00 | Window Closed / Lapsed |