US1902102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of viscose
Assignee: IG Farbenindustrie AG
•
Filing: 1929-11-27
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Granted: 1933-03-21
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Expires: 1949-11-27
Abstract
No abstract record available.
Inventors
- 👤 Schmid Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:31
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/08; F16K11/085; B; B01; B01J; B01J4/00; B01J4/001; C; C01; C01B; C01B11/00; C01B11/04; C01B11/06; C01B11/062; C01B11/064; D; D01; D01F; D01F2/00; D01F2/06; D01F2/08
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) | 1936-03-20 | 1936-09-19 | 1937-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-03-20 | 1940-09-19 | 1941-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-03-20 | 1944-09-19 | 1945-03-21 | $7700.00 | Window Closed / Lapsed |