Patent US1987092A successfully refreshed from Google Patents.
US1987092A
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Conversion of hydrocarbons
Assignee: IG Farbenindustrie AG
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Filing: 1931-05-13
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Granted: 1935-01-08
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Expires: 1951-05-13
Abstract
No abstract record available.
Inventors
- 👤 Winkler Fritz
- 👤 Feiler Paul
- 👤 Weigmann Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:51
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/76; B; B01; B01J; B01J19/00; B01J19/02; B01J8/00; B01J8/02; B01J8/0285; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00513; B01J2219/00; B01J2219/02; B01J2219/0204; B01J2219/0218; B01J2219/025; B01J2219/0263; B01J2219/0268
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) | 1938-01-07 | 1938-07-09 | 1939-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-01-07 | 1942-07-09 | 1943-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-01-07 | 1946-07-09 | 1947-01-08 | $7700.00 | Window Closed / Lapsed |