| Joma International AS Patent applications |
| Patent application number | Title | Published |
|---|
| 20100322831 | METHOD FOR THE PRODUCTION OF METAL PRODUCTS - The invention provides a method for the Industrial purification of a low-grade polyvalent cation feed stream of purity P1, by the formation of a polyvalent cation-double-salt precipitate of purity P2 and a polyvalent cation solution with purity P3, wherein P2>P1>P3, said method comprising the steps of: a) forming, from said feed, a medium comprising water, polyvalent cation, a cation selected from the group consisting of ammonium, cations of alkali metals, protons and a combination thereof, and anions; which formed medium is further characterized by the presence of (i) a double-salt precipitate comprising a polyvalent cation, at least one of said cations and at least one of said anions; and (ii) a polyvalent cation solution; and wherein the concentration of said anions is higher then 10% and the ratio between the concentrations of said cation to said anion in said polyvalent cation solution is within Zone DS as herein defined; and b) separating at least a portion of said precipitate from said solution. | 12-23-2010 |
| 20080311031 | Methods For Production of Metal Oxide Nano Particles With Controlled Properties, and Nano Particles and Preparations Produced Thereby - The invention provides a method for the formation of small-size metal oxide particles, comprising the steps of a) preparing a starting aqueous solution comprising at least one of metallic ions and complexes thereof, at a concentration of at least 0.1 % w/w of the metal component; b) maintaining the solution at a temperature lower than 50° C. for a retention time in which hydrolysis takes place, the extent of the hydrolysis being sufficient to produce O.1 mmol protons per mmol of metal present in solution, wherein the time does not exceed 14 days, to form a system containing a retained solution; and c) adjusting the conditions in the system by at least one of the steps of: i) heating the retained solution to elevate the temperature thereof by at least 1° C.; ii) changing the pH of the retained solution by at least 0.1 units; and iii) diluting the retained solution by at least 20% whereby there are formed particles, wherein the majority of the particles formed are between about 2 nm and about 500 nm in size. | 12-18-2008 |
| 20080305025 | Methods for Production of Metal Oxide Nano Particles, and Nano Particles and Preparations Produced Thereby - The invention provides a method for the formation of small-size metal oxide particles, comprising the steps of: a) preparing a starting aqueous solution comprising at least one of metallic ion and complexes thereof, at a concentration of at least 0.1% w/w of the metal component; b) preparing a modifying aqueous solution having a temperature greater than 50° C.; c) contacting the modifying aqueous solution with the starting aqueous solution in a continuous mode in a mixing chamber to form a-modified system; d) removing the modified system from the mixing chamber in a plug-flow mode; wherein the method is characterized in that: i) the residence time in the mixing chamber is less than about 5 minutes; and iii) there are formed particles or aggregates thereof, wherein the majority of the particles formed are between about 2 nm and about 500 nm in size. | 12-11-2008 |
| 20080299036 | Methods for Production of Titanium Oxide Particles, and Particles and Preparations Produced Thereby - The invention provides a method for the formation of small-size titanium oxide particles, comprising the steps of a) preparing a starting aqueous solution comprising at least one of titanic ions and complexes thereof, at a concentration of at least 0.1% w/w titanium; b) maintaining the solution at a temperature lower than 70° C. for a retention time in which hydrolysis takes place, the extent of the hydrolysis being sufficient to produce 0.1 mmol protons per mmol of titanium present in solution, wherein the time does not exceed 14 days, to form a system containing a retained solution; and c) adjusting the conditions in the system by at least one of the steps of: i) heating the retained solution to elevate the temperature thereof by at least 1° C.; ii) changing the pH of the retained solution by at least 0.1 units; and iii) diluting the retained solution by at least 20% whereby there are formed particles, wherein the majority of the particles formed are between about 2 nm and about 500 nm in size. | 12-04-2008 |
