US2086888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of a substitute for wool
Assignee: IG Farbenindustrie AG
•
Filing: 1935-12-21
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Granted: 1937-07-13
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Expires: 1955-12-21
Abstract
No abstract record available.
Inventors
- 👤 Zetzsche Walther
- 👤 Graumann Erich
- 👤 Faber Hermann
- 👤 Stix Edmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:24
CPC Classifications
D; D01; D01D; D01D10/00; D01D10/04; D01D10/049; H; H02; H02J; H02J13/00; H02J13/13; H02J13/1311; H02J13/1313; D01F; D01F2/00; D01F2/06; Y; Y02; Y02E; Y02E60/00; Y04; Y04S; Y04S40/00; Y04S40/12; Y04S40/121
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) | 1940-07-12 | 1941-01-11 | 1941-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-07-12 | 1945-01-11 | 1945-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-07-12 | 1949-01-11 | 1949-07-13 | $7700.00 | Window Closed / Lapsed |