The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 24, 1985
Filed:
Nov. 16, 1981
Fritz J Friedlaender, West Lafayette, IN (US);
Makoto Takayasu, West Lafayette, IN (US);
Purdue Research Foundation, West Lafayette, IN (US);
Abstract
A method and apparatus are disclosed for magnetically separating particles from a liquid, which particles include diamagnetic, non-magnetic and/or very weakly paramagnetic particles. To achieve separation, the magnetic susceptibility of the liquid is modified, such as through dissolving a paramagnetic substance (such as manganese chloride) or a diamagnetic substance (such as bismuth diiodide) in a liquid (such as water, alcohol or glycerine), after which the modified paramagnetic liquid is passed through a filter formed of magnetic material in a magnetic field with the filter being preferably formed of ferromagnetic material establishing a high gradient magnetic filter. Selective filtering of particles is also provided by modifying the susceptibility of the liquid to be identical to that of one group of particles included in the liquid but different from a second group of particles, whereby the one group of particles and the liquid can be passed through the filter while the second group of particles is separated from the liquid by the filter.