Assignee
KEMIRA CHEMICALS OY
US·21 granted patents·265 citations·filing 1995–2002
Top patents by PatentIndex Score
21 records- 0186US6165318ADelignification of chemical pulp with peroxide in the presence of a silicomolybdenic acid compoundKEMIRA CHEMICALS OY·Filed 1995·Granted Dec 26, 2000·46 cites·8 claims
- 0285US6372035B1Hydrophobising system for paper or similar fiber productKEMIRA CHEMICALS OY·Filed 2000·Granted Apr 16, 2002·28 cites·22 claims
- 0380US6590120B1Methods for the preparation of an N-bis-[2-(1,2-dicarboxy-ethoxy)-ethyl]amine derivative and products of the methods and their usesKEMIRA CHEMICALS OY·Filed 1999·Granted Jul 8, 2003·10 cites·29 claims
- 0477US6712934B2Method for production of paperKEMIRA CHEMICALS OY·Filed 2000·Granted Mar 30, 2004·17 cites·11 claims
- 0577US6264790B1Process for the peracid bleaching of chelated chemical pulpKEMIRA CHEMICALS OY·Filed 1997·Granted Jul 24, 2001·19 cites·10 claims
- 0676US6429333B1Method for preparing formic acidKEMIRA CHEMICALS OY·Filed 1999·Granted Aug 6, 2002·21 cites·14 claims
- 0773US6187143B1Process for the manufacture of hydrophobic paper or hydrophobic board, and a sizing compositionKEMIRA CHEMICALS OY·Filed 1999·Granted Feb 13, 2001·37 cites·15 claims
- 0865US6749727B2Hydrogenation of a working solution in a hydrogen peroxide production processKEMIRA CHEMICALS OY·Filed 2002·Granted Jun 15, 2004·5 cites·17 claims
- 0964US6677477B2Process for the production of peracetic acidKEMIRA CHEMICALS OY·Filed 2002·Granted Jan 13, 2004·6 cites·27 claims
- 1062US5942199AMethod for the treatment of impure aluminium oxideKEMIRA CHEMICALS OY·Filed 1997·Granted Aug 24, 1999·25 cites·16 claims
- 1160US6814949B1Process for production of phosphoric acid by crystallization of phosphoric acid hemihydrateKEMIRA CHEMICALS OY·Filed 2000·Granted Nov 9, 2004·10 cites·11 claims
- 1256US6677478B2Process for the production of percarboxylic acidKEMIRA CHEMICALS OY·Filed 2002·Granted Jan 13, 2004·3 cites·19 claims
- 1351US6689377B2Solid formic acid productKEMIRA CHEMICALS OY·Filed 2001·Granted Feb 10, 2004·1 cites·11 claims
- 1448US5725837AProcess for the preparation of hydrogen peroxideKEMIRA CHEMICALS OY·Filed 1996·Granted Mar 10, 1998·12 cites·8 claims
- 1546US6093849AN-bis- or N-tris-[(1,2-dicarboxy-ethoxy)-ethyl]-amine derivatives and preparation and use of the sameKEMIRA CHEMICALS OY·Filed 1997·Granted Jul 25, 2000·4 cites·13 claims
- 1645US6331192B1Bleaching of chemical pulp and treatment with a chelating agentKEMIRA CHEMICALS OY·Filed 1998·Granted Dec 18, 2001·5 cites·11 claims
- 1743US6492551B1Method for manufacturing alkali metal or alkaline-earth metal formateKEMIRA CHEMICALS OY·Filed 1999·Granted Dec 10, 2002·3 cites·12 claims
- 1843US6270564B1Process for the bleaching of pigmentsKEMIRA CHEMICALS OY·Filed 1999·Granted Aug 7, 2001·5 cites·9 claims
- 1929US6270738B1Process for preparing usable products from an impure ferric sulfate solutionKEMIRA CHEMICALS OY·Filed 1999·Granted Aug 7, 2001·2 cites·19 claims
- 2029US6262008B1Stabilized sodium carbonate peroxyhydrateKEMIRA CHEMICALS OY·Filed 1998·Granted Jul 17, 2001·3 cites·21 claims
- 2126US6387998B1Process for preparing a cationically modified (meth)acrylamide polymer and use of the polymerKEMIRA CHEMICALS OY·Filed 1998·Granted May 14, 2002·3 cites·16 claims
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