US2200485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of diminishing or preventing foaming
Assignee: IG Farbenindustrie AG
•
Filing: 1939-03-22
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Granted: 1940-05-14
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Expires: 1959-03-22
Abstract
No abstract record available.
Inventors
- 👤 Brodersen Karl
- 👤 Quaedvlieg Mathias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:28
CPC Classifications
C; C13; C13B; C13B30/00; C13B30/002; C13B30/005; B; B01; B01B; B01B1/00; B01B1/02; B01B1/04; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; B01D19/0418; B03; B03D; B03D1/00; B03D1/08; C11; C11D; C11D3/00; C11D3/0005; C11D3/0026
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) | 1943-05-14 | 1943-11-13 | 1944-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-05-14 | 1947-11-13 | 1948-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-05-14 | 1951-11-13 | 1952-05-14 | $7700.00 | Window Closed / Lapsed |