Patent US2574831A successfully refreshed from Google Patents.
US3489526A
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US
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Liquid-liquid contactor
Assignee: ISRAEL MINING IND INST FOR RES
•
Filing: 1966-04-26
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Granted: 1970-01-13
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Expires: 1986-04-26
Abstract
No abstract record available.
Inventors
- 👤 Menahem El-Roy
- 👤 Shragga Irmay
- 👤 Ruth Blumberg
- 👤 Rafael Blumenthal
- 👤 Kiriat Tivon
- 👤 Avraham Matitiahu Baniel
- 👤 David Gonen
- 👤 David Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:51
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/04; B01D11/0446; B01D11/0457; B01F; B01F27/00; B01F27/80; B01F27/93; B01F27/05; B01F27/11; B01F27/19; B01F27/191
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2405158A
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US2594675A
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US2701753A
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US2710250A
Cited
FR1119155A
Cited
FR1139449A
Cited
US2768987A
Cited
US3162510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |