Assignee
KEMIRA KEMI AB
SE·19 granted patents·1 pending application·295 citations·filing 1990–2008
Top patents by PatentIndex Score
20 records- 0181US5720882ATreatment method for waste water sludge comprising phoshorous, heavy metals and at least one metalKEMIRA KEMI AB·Filed 1994·Granted Feb 24, 1998·52 cites·37 claims
- 0272US6217768B1Method for treating sludge from wastewater treatmentKEMIRA KEMI AB·Filed 1999·Granted Apr 17, 2001·41 cites·18 claims
- 0368US5904856AProcess for the preparation of aluminum salt solutionsKEMIRA KEMI AB·Filed 1996·Granted May 18, 1999·25 cites·10 claims
- 0468US5182094AProcess for the preparation of polyaluminum compoundsKEMIRA KEMI AB·Filed 1990·Granted Jan 26, 1993·21 cites·10 claims
- 0565US5888404AMethod for treating waste water sludgeKEMIRA KEMI AB·Filed 1995·Granted Mar 30, 1999·36 cites·21 claims
- 0665US5674402AMethod for the treatment of water treatment sludgeKEMIRA KEMI AB·Filed 1994·Granted Oct 7, 1997·29 cites·37 claims
- 0762US6746568B1Treatment of filtrates from peroxide bleaching of pulpKEMIRA KEMI AB·Filed 2000·Granted Jun 8, 2004·6 cites·9 claims
- 0854US7166227B2Method of treating digested sludgeKEMIRA KEMI AB·Filed 2004·Granted Jan 23, 2007·8 cites·14 claims
- 0953US6436181B1Sizing composition and a method of sizingKEMIRA KEMI AB·Filed 2000·Granted Aug 20, 2002·3 cites·10 claims
- 1053US5670021AProcess for production of paperKEMIRA KEMI AB·Filed 1993·Granted Sep 23, 1997·17 cites·10 claims
- 1152US6852297B2Method of treating residual acidKEMIRA KEMI AB·Filed 2003·Granted Feb 8, 2005·6 cites·7 claims
- 1247US6306256B1Retention agentKEMIRA KEMI AB·Filed 2000·Granted Oct 23, 2001·1 cites·14 claims
- 1347US5662826AProcess for the preparation of a coagulating chemical comprising dissolving a solid zeolite in a solution of trivalent metal saltKEMIRA KEMI AB·Filed 1995·Granted Sep 2, 1997·17 cites·5 claims
- 1443US6290812B1Method for treating process water in connection with pulp bleachingKEMIRA KEMI AB·Filed 2000·Granted Sep 18, 2001·10 cites·11 claims
- 1541US2010170778A1Process for the production of polyaluminium saltsKEMIRA KEMI AB·Filed 2008·Application pending·0 cites
- 1639US5968229APurification of metal containing solutionsKEMIRA KEMI AB·Filed 1996·Granted Oct 19, 1999·6 cites·8 claims
- 1734US6531167B1Process for preparation of nutritional supplement for animalsKEMIRA KEMI AB·Filed 1999·Granted Mar 11, 2003·7 cites·6 claims
- 1830US6010630AMethod for recovering at least one metal from an acidified waste water sludgeKEMIRA KEMI AB·Filed 1994·Granted Jan 4, 2000·5 cites·17 claims
- 1927US6652756B1Method of purifying sewageKEMIRA KEMI AB·Filed 1999·Granted Nov 25, 2003·0 cites·7 claims
- 2020US5632901AProcess for the elimination of heavy metalsKEMIRA KEMI AB·Filed 1995·Granted May 27, 1997·5 cites·6 claims
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