US2862824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for dehydrating heat sensitive materials from liquids
Assignee: Union Carbide Corp
•
Filing: 1953-09-14
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Granted: 1958-12-02
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Expires: 1973-09-14
Abstract
No abstract record available.
Inventors
- 👤 Elwood P Wenzelberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:58
CPC Classifications
A; A61; A61L; A61L2/00; A61L2/02; A23; A23B; A23B2/00; A23B2/90; A23B2/905; A23F; A23F3/00; A23F3/16; A23F3/22; A23F3/24; A23F5/00; A23F5/24; A23F5/28; A23F5/30; A23L; A23L2/00; A23L2/02; A23L2/08; A23L2/12; B; B01; B01D; B01D9/00; B01D9/02; B01D9/04; C; C12; C12H; C12H6/00; C12H6/04; Y; Y10; Y10S; Y10S159/00; Y10S159/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2436218A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |