US2941589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of reducing surface incrustation by salt crystals during evaporation of brine solutions
Assignee: ChampionX LLC
•
Filing: 1953-05-29
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Granted: 1960-06-21
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Expires: 1973-05-29
Abstract
No abstract record available.
Inventors
- 👤 Carl E Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:13
CPC Classifications
C; C23; C23F; C23F14/00; C23F14/02; C01; C01D; C01D3/00; C01D3/04; C01D3/06; C02; C02F; C02F5/00; C02F5/08; C02F5/10; Y; Y10; Y10S; Y10S159/00; Y10S159/13; Y10S159/20; Y10S203/00; Y10S203/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2575298A
Cited
US2575276A
Cited
US2668150A
Cited
US2723959A
Cited
US2701239A
Cited
US2762780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |