US3305455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of scale control in sea water evaporation
Assignee: Aqua Chem Inc
•
Filing: 1963-02-06
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Granted: 1967-02-21
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Expires: 1983-02-06
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Loebel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:38
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/042; Y; Y10; Y10S; Y10S159/00; Y10S159/13
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |