| Patent Number |
Title Of Patent |
Date Issued |
| 7368088 |
Apparatus for producing purified aqueous hydrogen peroxide solution |
May 6, 2008 |
| An apparatus for producing a purified aqueous hydrogen peroxide solution. The apparatus includes at least one purifier tower packed with an ion exchange resin, a chelate resin or an adsorption resin for receiving a charged aqueous hydrogen peroxide solution containing impurities so as to |
| 6896867 |
Process for producing a purified aqueous hydrogen peroxide solution |
May 24, 2005 |
| A process for producing a purified aqueous hydrogen peroxide solution comprises contacting an aqueous hydrogen peroxide solution containing metal ion impurities firstly with a H.sup.+ type cation exchange resin, secondly with a carbonate iron (CO.sub.3.sup.2-) type or bicarbonate ion |
| 6783748 |
Process for producing purified aqueous hydrogen peroxide solution |
August 31, 2004 |
| A process for producing a purified aqueous hydrogen peroxide solution, comprising passing a charged aqueous hydrogen peroxide solution containing impurities through a purifier tower packed with an ion exchange resin, a chelate resin or an adsorption resin to thereby purify the charged aq |
| 6649139 |
Process for producing a purified aqueous hydrogen peroxide solution |
November 18, 2003 |
| A process for producing a highly purified aqueous hydrogen peroxide solution by removing silicon oxide impurities from an aqueous hydrogen peroxide solution containing silicon oxide impurities by adding a flocculating agent and filtering out impurities of solid content contained in t |
