Inventor · disambiguated record
Bert Klesczewski
Also filed as: KLESCZEWSKI BERT
16 granted patents·19 pending applications·77 citations·filing 2000–2018
91Inventor score
Files withCOVESTRO DEUTSCHLAND AG14BAYER MATERIALSCIENCE AG5KLESCZEWSKI BERT4NEFZGER HARTMUT4BAYER AG3
Top patents by PatentIndex Score
35 records- 0196US10106641B2Mixtures of polyether carbonate polyols and polyether polyols for producing polyurethane soft foamsCOVESTRO DEUTSCHLAND AG·Filed 2014·Granted Oct 23, 2018·18 cites·15 claims
- 0291US11130842B2Process for the preparation of polyether polyolsCOVESTRO DEUTSCHLAND AG·Filed 2018·Granted Sep 28, 2021·2 cites·12 claims
- 0389US9139685B2Process for the preparation of a polyurethane polymer with secondary hydroxyl end groups comprising polyester polyolsNEFZGER HARTMUT·Filed 2010·Granted Sep 22, 2015·6 cites·16 claims
- 0486US10233298B2Polyurethane foams based on polyether carbonate polyolsCOVESTRO DEUTSCHLAND AG·Filed 2015·Granted Mar 19, 2019·2 cites·14 claims
- 0583US6444720B1Open-cell rigid polyurethane foamsBAYER AG·Filed 2000·Granted Sep 3, 2002·20 cites·14 claims
- 0682US9714216B2Use of urethane alcohols for preparation of polyether polyolsCOVESTRO DEUTSCHLAND AG·Filed 2014·Granted Jul 25, 2017·3 cites·12 claims
- 0780US10487175B2Use of alcohols containing at least two urethane groups for preparation of polyether polyolsCOVESTRO DEUTSCHLAND AG·Filed 2016·Granted Nov 26, 2019·1 cites·11 claims
- 0875US6670406B2Process for producing polyether polyolsBAYER AG·Filed 2002·Granted Dec 30, 2003·12 cites·11 claims
- 0972US8715778B2Ballast and process for the production of ballastHOFFMANN ANDREAS·Filed 2007·Granted May 6, 2014·5 cites·10 claims
- 1070US9193822B2Process for producing polyester polyols having secondary OH end groupsNEFZGER HARTMUT·Filed 2010·Granted Nov 24, 2015·1 cites·7 claims
- 1163US8183302B2Visco-elastic polyurethane foam with castor oilKLESCZEWSKI BERT·Filed 2009·Granted May 22, 2012·2 cites·19 claims
- 1262US6776925B2Process for the preparation of polyether polyolsBAYER AG·Filed 2002·Granted Aug 17, 2004·5 cites·10 claims
- 1361US10519276B2Use of alcohols which contain at least two urethane groups for producing polyether carbonate polyolsCOVESTRO DEUTSCHLAND AG·Filed 2016·Granted Dec 31, 2019·0 cites·12 claims
- 1459US2016257776A1Method for producing flexible polyurethane foam materialsCOVESTRO DEUTSCHLAND AG·Filed 2016·Application pending·0 cites
- 1555US9957352B2Use of urethane alcohols for preparing polyether carbonate polyolsCOVESTRO DEUTSCHLAND AG·Filed 2014·Granted May 1, 2018·0 cites·12 claims
- 1654US2014107245A1Process for the preparation of polyether polyolsHofmann Jörg·Filed 2012·Application pending·0 cites
- 1752US2008167394A1Process for the preparation of PIPA polyols for the production of highly elastic flexible polyurethane foamsBAYER MATERIALSCIENCE AG·Filed 2007·Application pending·0 cites
- 1852US2014066535A1Method for producing flexible polyurethane foam materialsJACOBS GUNDOLF·Filed 2012·Application pending·0 cites
- 1950US9328196B2Process for the preparation of polyricinoleic acid ester polyols having primary hydroxyl end groupsNEFZGER HARTMUT·Filed 2011·Granted May 3, 2016·0 cites·13 claims
- 2049US2007010593A1Pur-polyester flexible foams based on polyetheresterpolyolsBAYER MATERIALSCIENCE AG·Filed 2006·Application pending·0 cites
- 2147US11345775B2Polyurethane foams based on polyethercarbonate polyolsCOVESTRO DEUTSCHLAND AG·Filed 2016·Granted May 31, 2022·0 cites·16 claims
- 2247US2015141542A1Method for producing flame-protected polyurethane foams having low bulk densitiesBAYER MATERIALSCIENCE AG·Filed 2013·Application pending·0 cites
- 2345US2015299373A1Method for producing soft polyurethane foam based on polyester polyolsBAYER MATERIALSCIENCE AG·Filed 2013·Application pending·0 cites
- 2445US2020407500A1Flame retardant soft ether foamsCOVESTRO DEUTSCHLAND AG·Filed 2017·Application pending·0 cites
- 2544US2014329985A1Method for producing polyether ester polyolsLORENZ KLAUS·Filed 2011·Application pending·0 cites
- 2644US2013345330A1Method for producing flexible polyurethane foamsNEFZGER HARTMUT·Filed 2011·Application pending·0 cites
- 2743US2018265623A1Polyurethane foams based on polyether carbonate polyolsCOVESTRO DEUTSCHLAND AG·Filed 2016·Application pending·0 cites
- 2842US2018223030A1Method for producing flexible polyester urethane foams with increased compressive strengthCOVESTRO DEUTSCHLAND AG·Filed 2016·Application pending·0 cites
- 2942US2007238796A1Process for the preparation of PIPA polyolsLOVENICH CATHERINE J·Filed 2006·Application pending·0 cites
- 3041US2013237624A1Method for producing flexible polyurethane foamsKLESCZEWSKI BERT·Filed 2011·Application pending·0 cites
- 3140US2018327537A1Polyurethane foams based on polyether carbonate polyolsCOVESTRO DEUTSCHLAND AG·Filed 2016·Application pending·0 cites
- 3240US2018044464A1Viscoelastic flexible polyurethane foams based on polyether carbonate polyolsCOVESTRO DEUTSCHLAND AG·Filed 2016·Application pending·0 cites
- 3338US2010305228A1Process for production of flexible polyurethane foams with low emissionBAYER MATERIALSCIENCE AG·Filed 2010·Application pending·0 cites
- 3438US2008207791A1Process for producing polyurethane flexible foamed materials having low bulk densityKLESCZEWSKI BERT·Filed 2008·Application pending·0 cites
- 3534US2012108690A1Method for producing flame-retardant polyurethane foam materials having good long-term use propertiesKLESCZEWSKI BERT·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →