US3392089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-effect desalination process with preheating by direct contact oil scale removing
Assignee: Texaco Inc
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Filing: 1964-06-15
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Granted: 1968-07-09
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Expires: 1984-06-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank E Guptill
- 👤 Howard V Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:29
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/10; B; B01; B01D; B01D1/00; B01D1/26; C02F1/042; F; F28; F28C; F28C3/00; F28C3/04; Y; Y02; Y02A; Y02A20/00; Y02A20/124; Y10; Y10S; Y10S159/00; Y10S159/08; Y10S159/13; Y10S159/33; Y10S203/00; Y10S203/11
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) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |