US2873799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for dehydrating aqueous caustic solutions
Assignee: Honeywell International Inc
•
Filing: 1956-01-09
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Granted: 1959-02-17
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Expires: 1976-01-09
Abstract
No abstract record available.
Inventors
- 👤 James J Earley
- 👤 Carl J Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:55
CPC Classifications
C; C01; C01D; C01D1/00; C01D1/04; C01D1/42; Y; Y10; Y10S; Y10S159/00; Y10S159/01; Y10S159/06; Y10S159/15; Y10S159/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |