US3515521A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the separation of salts from solutions
Assignee: Individual
•
Filing: 1966-08-03
•
Granted: 1970-06-02
•
Expires: 1986-08-03
Abstract
No abstract record available.
Inventors
- 👤 Miroslav Cap
- 👤 Zdenek Cizinsky
- 👤 Rudolf Dohnalek
- 👤 Jiri Chvojka
- 👤 Vitezslav Karkoska
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:55
CPC Classifications
B; B01; B01D; B01D9/00; B01D9/0018; B01D9/0022; B01D9/0031; B01D9/0059
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2005120A
Cited
US2459302A
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US2739044A
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US2928725A
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US3113834A
Cited
US3297413A
Cited
US3390078A
Cited
US3365278A
Cited
US3401094A
Cited
US3433603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |