HN

Hartmut Nefzger

CA Covestro Deutschland Ag: 24 patents #7 of 964Top 1%
BA Bayer Materialscience Ag: 17 patents #12 of 1,035Top 2%
BH Bayer Healthcare: 10 patents #949 of 8,007Top 15%
AG Adhesys Medical Gmbh: 5 patents #3 of 9Top 35%
BG Bayer Intellectual Property Gmbh: 2 patents #437 of 1,266Top 35%
CP Covestro Intellectual Property: 1 patents #95 of 267Top 40%
📍 Pulheim, WV: #1 of 1 inventorsTop 100%
Overall (All Time): #37,679 of 4,157,543Top 1%
61
Patents All Time

Issued Patents All Time

Showing 26–50 of 61 patents

Patent #TitleCo-InventorsDate
9580540 Hydroxy amino polymer and use thereof in polyurea/polyurethane tissue adhesives Heike Heckroth, Christoph Eggert, Jörg Hofmann, Klaus Lorenz, Edward P. Browne 2017-02-28
9458277 Homogeneous extruded articles made from thermoplastically processable polyurethanes based on polyester diols formed from succinic acid and 1,3-propanediol Wolfgang Brauer, Yi Shen, Wolfgang Kaufhold 2016-10-04
9415572 Composite elements composed from thermoplastic polymers and polyurethanes, and process for production thereof Rolf Albach, Petra Venner, Monika Haselbach 2016-08-16
9404026 Polyurea-based fabric glue Heike Heckroth, Christoph Eggert 2016-08-02
9354355 Lightfast polyurethane composition Dorota Greszta-Franz, Hans-Josef Laas, Jens Krause 2016-05-31
9328196 Process for the preparation of polyricinoleic acid ester polyols having primary hydroxyl end groups Jörg Hofmann, Erika Bauer, Bert Klesczewski, Klaus Lorenz 2016-05-03
9238711 Hydroxylamino polymer and method for the production thereof Jörg Hofmann, Klaus Lorenz 2016-01-19
9193822 Process for producing polyester polyols having secondary OH end groups Erika Bauer, Jörg Hofmann, Klaus Lorenz, Bert Klesczewski 2015-11-24
9139685 Process for the preparation of a polyurethane polymer with secondary hydroxyl end groups comprising polyester polyols Jörg Hofmann, Bert Klesczewski, Erika Bauer, Klaus Lorenz 2015-09-22
9062149 High-value polyurethane elastomers and production thereof Florian Hupka, Stephan Reiter, Jens Krause 2015-06-23
9051410 Polyurea-based fabric glue Heike Heckroth, Christoph Eggert 2015-06-09
9029495 Process for producing polyether polyols having primary hydroxyl end groups Erika Bauer, Jörg Hofmann, Klaus Lorenz, Norbert Hahn 2015-05-12
9000089 Polyurea systems, processes for preparing the same and use thereof for postoperative adhesion barriers Heike Heckroth, Christian Wamprecht 2015-04-07
8697830 Aliphatic, sinterable, thermoplastic polyurethane molding compositions with improved blooming behavior Henricus Peerlings, Wolfgang Kaufhold, Erika Bauer, Markus Broich 2014-04-15
8592623 Method for producing polyester polyols having low amounts of dioxane waste Rolf Roers, Erika Bauer, Johannes Van De Braak, Torsten Heinemann, Jürgen Schloβmacher 2013-11-26
8481606 Process for the production of polyester polyols with low volumes of dioxane waste Erika Bauer, Johannes Van De Braak, Jürgen Schloβmacher 2013-07-09
8334035 Polyester polyols from terephthalic acid and oligoalkylene oxides Erika Bauer, Uwe Kuenzel, Jürgen Schloβmacher, Lutz Brassat 2012-12-18
8273846 Polyurethane and polyurethane urea elastomers based on polycarbonate polyols James-Michael Barnes, Manfred Schmidt, Jens Krause 2012-09-25
8110704 Process for the production of stable polymers James-Michael Barnes, Erika Bauer, Stefan Penninger, Thomas W. Schultz, Heinrich Lutz +2 more 2012-02-07
7951896 Process for the production of NCO prepolymers that are stable to sedimentation, and their use Manfred Schmidt, James-Michael Barnes, Ernst Felske, Jens Krause 2011-05-31
7893150 Polymer dispersions in polyester polyols Erika Bauer, Erhard Michaels 2011-02-22
7893189 Poly(ether-ester) polyols and processes for their production Klaus Lorenz, Jörg Hofmann 2011-02-22
7772321 Polymer dispersions in polyester polyols Erika Bauer, Erhard Michels 2010-08-10
7763683 Polyester polyols, a process for the production thereof and the use thereof Gerhard Klein, Manfred Schmidt, Jens Krause, James-Michael Barnes, Erika Bauer 2010-07-27
7687599 Poly(ether-ester) polyols and processes for their production Klaus Lorenz, Jörg Hofmann 2010-03-30