Inventor · disambiguated record
Christoph Sigwart
Also filed as: SIGWART CHRISTOPH
33 granted patents·9 pending applications·284 citations·filing 1993–2023
97Inventor score
Top patents by PatentIndex Score
42 records- 0196US9469732B2Method for producing low-halogen polybiphenylsulfone polymersBASF SE·Filed 2015·Granted Oct 18, 2016·12 cites·18 claims
- 0294US9102798B2Method for producing low-halogen polybiphenylsulfone polymersWEBER MARTIN·Filed 2010·Granted Aug 11, 2015·12 cites·15 claims
- 0385US6441110B1Method for producing halogen-free reactive polyisobuteneBASF AG·Filed 1998·Granted Aug 27, 2002·53 cites·7 claims
- 0482US6870014B2Catalyst and method for producing polytetrahydrofuraneBASF AG·Filed 2001·Granted Mar 22, 2005·18 cites·33 claims
- 0580US7057080B2Color index of multivalent alcohols by hydrogenationBASF AG·Filed 2001·Granted Jun 6, 2006·10 cites·21 claims
- 0679US5391771AHydrogenation of citric acidBASF AG·Filed 1993·Granted Feb 21, 1995·16 cites·14 claims
- 0776US6384154B1Preparation of halogen-free, reactive polyisobuteneBASF AG·Filed 1999·Granted May 7, 2002·31 cites·10 claims
- 0873US7041752B2Catalyst and method for the production of polytetrahydrofuranBASF AG·Filed 2002·Granted May 9, 2006·11 cites·15 claims
- 0971US6716937B2Method for the single-step production of polytetrahydrofuran and tetrahydrofuran copolymersBASF AG·Filed 2001·Granted Apr 6, 2004·10 cites·7 claims
- 1070US5945575AMethod of producing reactive halogen-free, polyisobuteneFiled 1996·Granted Aug 31, 1999·24 cites·20 claims
- 1169US5773648APreparation of polytetrahydrofuranBASF AG·Filed 1995·Granted Jun 30, 1998·31 cites·10 claims
- 1269US2025388726A1Process for the production of polyarylene(ether)sulfones with improved performanceBASF SE·Filed 2023·Application pending·0 cites
- 1367US7456249B2Catalyst, its preparation and the polymerization of cyclic ethers over this catalystBASF SE·Filed 2008·Granted Nov 25, 2008·1 cites·5 claims
- 1461US7074944B2Method for producing polytetrahydrofuranBASF AG·Filed 2002·Granted Jul 11, 2006·5 cites·8 claims
- 1560US6852869B2Method for the production of polytetrahydrofuran with low color indexBASF AG·Filed 2001·Granted Feb 8, 2005·4 cites·12 claims
- 1654US8350063B2Method for separating tioxane from a trioxane/formaldehyde/water mixture by means of pressure change rectificationBASF SE·Filed 2008·Granted Jan 8, 2013·0 cites·10 claims
- 1753US8378144B2Process for preparing polyoxymethylene homopolymers or copolymers by homopolymerization or copolymerization of trioxane, starting from methanolBASF SE·Filed 2008·Granted Feb 19, 2013·0 cites·2 claims
- 1853US2010324311A1Method for the production of crude trioxaneBASF SE·Filed 2008·Application pending·0 cites
- 1950US2014187737A1Process for the Treatment of a Recycling Stream from a Plant for the Production of Polyarylene Ether SulfonesBASF SE·Filed 2013·Application pending·0 cites
- 2049US6359108B1Method for polymerizing cyclic etherBASF AG·Filed 1998·Granted Mar 19, 2002·12 cites·10 claims
- 2149US2014183031A1Process for the Treatment of a Recycling Stream from a Plant for the Production of Polyarylene Ether SulfonesBASF SE·Filed 2013·Application pending·0 cites
- 2249US2014183032A1Process for the treatment of a recycling stream from a plant for the production of polyarylene etherBASF SE·Filed 2013·Application pending·0 cites
- 2348US8450507B2Integrated method for the preparation of trioxane from formaldehydeSIEGERT MARKUS·Filed 2007·Granted May 28, 2013·0 cites·13 claims
- 2447US7449422B2Catalyst, its preparation and the polymerization of cyclic ethers over this catalystBASF SE·Filed 2003·Granted Nov 11, 2008·0 cites·4 claims
- 2547US6043338AMethod of producing polyoxytetramethylene glycolBASF AG·Filed 1996·Granted Mar 28, 2000·9 cites·13 claims
- 2647US2014183028A1Process for the treatment of a recycling stream from a plant for the production of polyarylene ether sulfonesBASF SE·Filed 2013·Application pending·0 cites
- 2747US2014183029A1Process for the treatment of a recyclying stream from a plant for the production of polyarylene ether sulfonesBASF SE·Filed 2013·Application pending·0 cites
- 2847US2014183030A1Process for the purification of a crude solvent stream comprising an n-alkylpyrrolidoneBASF SE·Filed 2013·Application pending·0 cites
- 2946US6211401B1Process for preparing polytetrahydrofuranBASF AG·Filed 1997·Granted Apr 3, 2001·8 cites·12 claims
- 3046US2014187796A1Process for the treatment of a recyclying stream from a plant for the production of polyarylene ether sulfonesBASF SE·Filed 2013·Application pending·0 cites
- 3144US5929261AProcess for the selective hydration of vinyloxirane to 1,2-butylene oxide of heterogeneous catalystsBASF AG·Filed 1997·Granted Jul 27, 1999·2 cites·4 claims
- 3243US5770747APreparation of 1,2-butylene oxideBASF AG·Filed 1995·Granted Jun 23, 1998·2 cites·6 claims
- 3341US7148318B2Method for producing polytetrahydrofurane having a low color indicesBASF AG·Filed 2003·Granted Dec 12, 2006·0 cites·5 claims
- 3441US6316664B1Process for preparing hydroxy-containing compounds from formic acid estersBASF AG·Filed 1996·Granted Nov 13, 2001·2 cites·27 claims
- 3540US5977417APreparation of 1,4-butanediolBASF AG·Filed 1998·Granted Nov 2, 1999·1 cites·10 claims
- 3639US6002027APreparation of 1,2-butylene oxideBASF AG·Filed 1998·Granted Dec 14, 1999·1 cites·20 claims
- 3737US6111147AProcess for preparing polytetrahydrofuran and derivatives thereofBASF AG·Filed 1997·Granted Aug 29, 2000·4 cites·8 claims
- 3837US5939590ATetrahydrofuran/but-2-yne-1, 4-diol copolymers containing C-C triple bondsBASF AG·Filed 1996·Granted Aug 17, 1999·4 cites·15 claims
- 3934US6103941APreparation of 1,4-butanediolBASF AG·Filed 1995·Granted Aug 15, 2000·0 cites·10 claims
- 4031US6124368AMethod for producing polytetrahydrofuranBASF AG·Filed 1998·Granted Sep 26, 2000·1 cites·10 claims
- 4130US5948921AMethod for the selective hydrogenation of vinyl oxirane to butylene oxideFiled 1996·Granted Sep 7, 1999·0 cites·7 claims
- 4229US5869707APreparation of 1,2-butylene oxideBASF AG·Filed 1995·Granted Feb 9, 1999·0 cites·8 claims
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