Patent US2083600A successfully refreshed from Google Patents.
Patent US2197464A successfully refreshed from Google Patents.
US2197464A
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US
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Treating artificial fabrics
Assignee: IG Farbenindustrie AG
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Filing: 1938-03-04
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Granted: 1940-04-16
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Expires: 1958-03-04
Abstract
No abstract record available.
Inventors
- 👤 Brodersen Karl
- 👤 Quaedvlieg Matthias
- 👤 Zabel Max
- 👤 Schneider Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:45
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/53; C; C07; C07C; C07C279/00; C07C279/20; C07C279/24; C07C279/26; D06M13/00; D06M13/322; D06M13/402; D06M13/432
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) | 1943-04-16 | 1943-10-16 | 1944-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-04-16 | 1947-10-16 | 1948-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-04-16 | 1951-10-16 | 1952-04-16 | $7700.00 | Window Closed / Lapsed |