Patent US3655175A successfully refreshed from Google Patents.
US3655175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Package unit for removing metal from a solution of the metal
Assignee: Silver Recovery Equipment Pty Ltd
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Filing: 1969-07-28
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Granted: 1972-04-11
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Expires: 1989-07-28
Abstract
Abstract A package unit for recovering precious metals from their aqueous solutions. The package unit is constructed of plastics such that when the precious metal precipitating agent therein is spent, the unit is disposed in a precious metal recovery process.
Inventors
- 👤 Victor Vaclav Zeleny
- 👤 Peter Charles Zeleny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:31
CPC Classifications
C; C22; C22B; C22B11/00; C22B11/04; C22B11/042; C22B11/046; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
22 words
A package unit according to claim 1 where the metal shavings for removing the precious metal from its solution are iron shavings.
Claim 2
Dependent Claim
42 words
A package unit according to claim 1 where the bed of neutralizing material is a bed of lump calcite, limestone, magnesite, dolomite or calcium hydroxide through which the incoming solution first passes before contacting the material for removing metal from its solution.
Claim 3
Dependent Claim
32 words
A package unit according to claim 1 wherein the metal shavings are fine and wound on a plastic tube until the outer diameter is a substantially press fit into the cylindrical container.
Claim 4
Dependent Claim
21 words
A package unit according to claim 4 wherein more than one set of wound metal shavings is used in the unit.
Claim 5
Dependent Claim
43 words
A package unit according to claim 4 wherein the fine metal shavings are wound on bobbins separated from each other by apertured spacers, whereby the spacers act as baffles to thereby prevent short circuitry of liquid as it flows upwardly in the unit.
Claim 6
Dependent Claim
44 words
A package unit according to claim 6 wherein the bed of neutralizing material is calcite, limestone, magnesite, dolomite or calcium hydroxide supported beneath the metal shavings on a perforated member itself supported in spaced relation on and above the bottom wall of the container.
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) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |