US2154893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of artificial threads or the like
Assignee: IG Farbenindustrie AG
•
Filing: 1936-02-15
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Granted: 1939-04-18
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Expires: 1956-02-15
Abstract
No abstract record available.
Inventors
- 👤 Eisenhut Otto
- 👤 Rein Hanns
- 👤 Hohe Homburg Von Der
- 👤 Widmann Hugo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:22
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/06; D01F2/08; C; C01; C01B; C01B17/00; C01B17/02; C01B17/06; C01B17/48; C01B17/50; C01B17/52; C05; C05B; C05B13/00; C05B13/02; C22; C22B; C22B1/00; C22B1/02; C22B1/10
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) | 1942-04-17 | 1942-10-17 | 1943-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-04-17 | 1946-10-17 | 1947-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-04-17 | 1950-10-17 | 1951-04-18 | $7700.00 | Window Closed / Lapsed |