Inventor · disambiguated record
Ulrich Liesenfelder
Also filed as: LIESENFELDER ULRICH
29 granted patents·11 pending applications·153 citations·filing 1995–2023
95Inventor score
Files withCOVESTRO DEUTSCHLAND AG12BAYER AG11BIERDEL MICHAEL6BAYER MATERIALSCIENCE AG1BAYER TECHNOLOGY SERVICES GMBH1
Top patents by PatentIndex Score
40 records- 0195US10035884B2Polysiloxane-polycarbonate block cocondensates with improved rheological propertiesCOVESTRO DEUTSCHLAND AG·Filed 2015·Granted Jul 31, 2018·6 cites·15 claims
- 0288US10836076B2Process for extruding plastic compositionsCOVESTRO DEUTSCHLAND AG·Filed 2018·Granted Nov 17, 2020·2 cites·22 claims
- 0384US10029393B2Screw elements with improved dispersing action and low energy inputCOVESTRO DEUTSCHLAND AG·Filed 2017·Granted Jul 24, 2018·1 cites·28 claims
- 0481US9828462B2Preparation of siloxane-containing block copolycarbonates by means of reactive extrusionCOVESTRO DEUTSCHLAND AG·Filed 2014·Granted Nov 28, 2017·3 cites·14 claims
- 0579US6417312B1Thermoplastic polyurethane elastomersBAYER AG·Filed 1996·Granted Jul 9, 2002·34 cites·3 claims
- 0678US5610255AProcess for preparing polysuccinimide and polyaspartic acidBAYER AG·Filed 1995·Granted Mar 11, 1997·25 cites·10 claims
- 0777US8876360B2Method for constructing co-rotating, contiguous bodies and computer program product for carrying out said methodBIERDEL MICHAEL·Filed 2009·Granted Nov 4, 2014·3 cites·13 claims
- 0877US6355762B1Process for the continuous preparation of melt processable polyurethanes with improved softening behaviourBAYER AG·Filed 2000·Granted Mar 12, 2002·14 cites·6 claims
- 0975US8753003B2Screw feed elements for extrusion of viscoelastic massesKIRCHHOFF JÖRG·Filed 2010·Granted Jun 17, 2014·3 cites·19 claims
- 1073US9688002B2Screw elements with improved dispersing action and low energy inputBIERDEL MICHAEL·Filed 2009·Granted Jun 27, 2017·2 cites·25 claims
- 1172US8979355B2Screw elements with reduced sweep angleBIERDEL MICHAEL·Filed 2009·Granted Mar 17, 2015·1 cites·13 claims
- 1269US5739252AThermoplastic polyurethaneurea elastomersBAYER AG·Filed 1996·Granted Apr 14, 1998·22 cites·4 claims
- 1368US9868245B2Screw elements for extruding plastic compositionsBIERDEL MICHAEL·Filed 2009·Granted Jan 16, 2018·1 cites·21 claims
- 1468US8915642B2Method for constructing co-rotating contiguous bodies and computer program product for carrying out said method and screw elements produced accordinglyBIERDEL MICHAEL·Filed 2009·Granted Dec 23, 2014·1 cites·15 claims
- 1568US2025326896A1Polysiloxane-Polycarbonate Block Co-Condensates Composed of Specially Terminated Siloxane BlocksCOVESTRO DEUTSCHLAND AG·Filed 2023·Application pending·0 cites
- 1667US9808978B2Screw elements with reduced energy input during the build-up of pressureBIERDEL MICHAEL·Filed 2009·Granted Nov 7, 2017·1 cites·21 claims
- 1765US9738025B2Method for extruding plastic massesKönig Thomas·Filed 2009·Granted Aug 22, 2017·1 cites·17 claims
- 1865US6465570B1Process for the production of elastomer-modified thermoplasticsBAYER AG·Filed 2000·Granted Oct 15, 2002·5 cites·3 claims
- 1965US2024166804A1Oligoesters Comprising Resorcinol and Iso- and/or Terephthalic Acid, Corresponding Polyester Carbonates and Their PreparationCOVESTRO DEUTSCHLAND AG·Filed 2022·Application pending·0 cites
- 2063US9944008B2Method for extruding plastic materialsKOENIG THOMAS·Filed 2009·Granted Apr 17, 2018·1 cites·16 claims
- 2162US2024352189A1Method for Preparing a Polysiloxane-Polycarbonate Block Copolymer Using at Least One Special Condensation ReactorCOVESTRO DEUTSCHLAND AG·Filed 2022·Application pending·0 cites
- 2261US2011184089A1Method for the extrusion of plastic materialsBAYER MATERIALSCIENCE AG·Filed 2009·Application pending·0 cites
- 2359US2024352188A1Method for Preparing a Polysiloxane-Polycarbonate Block CopolymerKovestro Deutschland AG·Filed 2022·Application pending·0 cites
- 2459US2025196077A1Screw elements with improved mixing effect and pressure build-upCOVESTRO DEUTSCHLAND AG·Filed 2023·Application pending·0 cites
- 2558US11970615B2Siloxane-containing block copolycarbonates having a small domain sizeCOVESTRO INTELLECTUAL PROPERTY GMBH & CO KG·Filed 2020·Granted Apr 30, 2024·0 cites·15 claims
- 2655US6187898B1Method for carrying out polycondensation reactionsBAYER AG·Filed 1998·Granted Feb 13, 2001·13 cites·20 claims
- 2749US6153692AProcess for the production of elastomer-modified thermoplasticsBAYER AG·Filed 1998·Granted Nov 28, 2000·10 cites·17 claims
- 2848US7144981B2Process for separating volatile components from polymersBAYER AG·Filed 2003·Granted Dec 5, 2006·1 cites·18 claims
- 2948US2023390986A1Extruder comprising a particular arrangement of asymmetrical screw elements on screw shaftsCOVESTRO DEUTSCHLAND AG·Filed 2021·Application pending·0 cites
- 3047US10717871B2Flame-retardant, glass fiber-containing molding compounds containing siloxane-containing polycarbonate block co-condensateCOVESTRO DEUTSCHLAND AG·Filed 2016·Granted Jul 21, 2020·0 cites·13 claims
- 3143US10487208B2Flame-retardant molding compounds containing siloxane-containing polycarbonate block co-condensateCOVESTRO DEUTSCHLAND AG·Filed 2016·Granted Nov 26, 2019·0 cites·14 claims
- 3241US9975104B2Processing unit and use of a plurality of processing unitsBAYER AG·Filed 2013·Granted May 22, 2018·0 cites·18 claims
- 3341US2011124773A1Process for continuously producing thermoplastically processable polyurethanesBAYER TECHNOLOGY SERVICES GMBH·Filed 2010·Application pending·0 cites
- 3440US10035123B2Production arrangement for performing a chemical reaction and use of a standard transport containerBAYER AG·Filed 2013·Granted Jul 31, 2018·0 cites·17 claims
- 3540US2021024459A1Method for recovering diisocyanates from distillation residuesCOVESTRO DEUTSCHLAND AG·Filed 2019·Application pending·0 cites
- 3637US7368061B2Process and device for the production of elastomer-modified thermoplasticsLANXESS DEUTSCHLAND GMBH·Filed 2004·Granted May 6, 2008·0 cites·8 claims
- 3737US2012116030A1Process for continuously producing thermoplastically processable polyurethanesHEPPERLE JENS·Filed 2011·Application pending·0 cites
- 3836US8394912B2Process and apparatus for the preparation of polycarbonateDOEBERT FRANK·Filed 2010·Granted Mar 12, 2013·0 cites·10 claims
- 3936US2003176636A1Method and device for removing volatile components from polymer materialsFiled 2001·Application pending·0 cites
- 4031US5679761AIminodisuccinate-containing polymersBAYER AG·Filed 1995·Granted Oct 21, 1997·3 cites·20 claims
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