US3488037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for contacting at least two fluid phases
Assignee: Czech Academy of Sciences
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Filing: 1968-04-12
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Granted: 1970-01-06
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Expires: 1988-04-12
Abstract
No abstract record available.
Inventors
- 👤 Jaroslav Prochazka
- 👤 Josef Landau
- 👤 Frantisek Souhrada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:44
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01J19/185; B01D; B01D11/00; B01D11/04; B01D11/0426; B01D11/0438; B01D3/00; B01D3/14; B01D3/32; B01D3/324; B01D3/328; B01J14/00
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) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |