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Patent No. 5719655

System for magnetically attaching templeless eyewear to a person

A system of eyewear that eliminates the need for hinges on the frames of the eyewear.

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Assignee: Placer Dome, Inc.


Location: Vancouver, CA
No. of patents: 6

NumberTitleIssue Date
6875254Methods for detecting and extracting gold
Methods for detecting gold and quantitating gold in ore samples utilizing a gold-specific protein are provided, including methods for multiple sample handling. Also provided are methods for extracting gold from mineral suspensions utilizing a magnetic mineral bindin...
04/05/2005
6686202Methods for detecting and extracting gold
Methods for detecting gold and quantitating gold in ore samples utilizing a gold-specific protein are provided, including methods for multiple sample handling. Also provided are methods for extracting gold from mineral suspensions utilizing a magnetic min...
02/03/2004
6207443Method for initiating heap bioleaching of sulfidic ores
The process of the present invention "jump starts" heap biooxidation of sulfides by incorporating a previously biooxidized material into the heap. The process can be used to recover precious and/or base metals from sulfidic ores and concentrate....
03/27/2001
6183706Autoclave having an agitator with an aerating impeller for high oxygen transfer rate to metal-containing slurries and method of use
A method is disclosed for recovering a metal from a metal containing material by autoclaving with an autoclave which includes an agitator that includes a first inlet for a recycled oxygen-containing gas, a second inlet for a fresh oxygen-containing gas, a...
02/06/2001
5895633Solvent extraction process for recovering copper from copper-containing solutions
The present invention is directed to a process for recovering copper from a copper-containing material by pressure oxidation followed by solvent extraction and electrowinning. The copper-containing solution formed by pressure oxidation is diluted before s...
04/20/1999
5698170Hydrometallurgical process for copper-containing materials
The present invention is directed to a process for recovering copper from a copper-containing material by pressure oxidation followed by solvent extraction and electrowinning. The copper-containing solution formed by pressure oxidation is diluted before s...
12/16/1997
 
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