US3131110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of achieving high concentrates of solutions having a high boiling point
Assignee: Appareils et Evaporateurs Kestner SA
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Filing: 1960-07-05
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Granted: 1964-04-28
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Expires: 1980-07-05
Abstract
No abstract record available.
Inventors
- 👤 Duval Jean Joseph Edouard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:03
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/10; B01D3/106; B01D1/00; B01D1/06; B01D1/12; Y; Y10; Y10S; Y10S159/00; 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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |