US2887267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deaeration of viscous liquids
Assignee: Akzona Inc
•
Filing: 1954-10-15
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Granted: 1959-05-19
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Expires: 1974-10-15
Abstract
No abstract record available.
Inventors
- 👤 Langen Lambertus Hendrik De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:09
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/10; D01D1/103; B; B01; B01D; B01D19/00; B01D19/0021; B01D19/0026; Y; Y10; Y10S; Y10S159/00; Y10S159/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1529884A
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US1634245A
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US2228816A
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US2592680A
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US2634907A
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US2737857A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |