Patent US3122072A successfully refreshed from Google Patents.
Patent US2213972A successfully refreshed from Google Patents.
US2213972A
Expired / Lapsed
US
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Artificial fiber suitable for yielding dyeings fast to fulling
Assignee: IG Farbenindustrie AG
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Filing: 1937-09-17
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Granted: 1940-09-10
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Expires: 1957-09-17
Abstract
No abstract record available.
Inventors
- 👤 Weinberg Arthur Von
- 👤 Rein Hanns
- 👤 Eisenhut Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:14
CPC Classifications
D; D06; D06P; D06P5/00; D06P5/22; D06P5/225; C; C08; C08L; C08L1/00; C08L1/08; C08L1/22; C08L1/24; D01; D01F; D01F1/00; D01F1/02; D01F1/10; D06P3/00; D06P3/58; D06P3/60; D06P3/64; Y; Y10; Y10S; Y10S106/00; Y10S106/07
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) | 1943-09-10 | 1944-03-11 | 1944-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-09-10 | 1948-03-11 | 1948-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-09-10 | 1952-03-11 | 1952-09-10 | $7700.00 | Window Closed / Lapsed |