Patents by Inventor Michael HAERTH

Michael HAERTH has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • MULTILAYER SOUND DAMPENING INTERLAYER FILMS COMPRISING ETHYLENE VINYL ACETALS
    Publication number: 20230373196
    Abstract: The invention is directed to multilayer sound dampening interlayer films comprising ethylene vinyl acetals.
    Type: Application
    Filed: September 21, 2021
    Publication date: November 23, 2023
    Applicant: KURARAY EUROPE GMBH
    Inventors: Greta BECKER, Jan BEEKHUIZEN, Michael HAERTH, Christian JANSSEN
  • Method for producing films based on plasticized polyvinyl acetal having a predefined viscosity
    Patent number: 10899059
    Abstract: Plasiticized polyvinylacetal films with greater film-to-film uniformity are produced by a process of extruding a melt stream containing a polyvinyl acetal and a plasticizer at 150-250° C., the film having a predefined melt viscosity at 60-170° C., by providing a first melt stream of at least a first plasticizer and a first polyvinyl acetal resin and measuring its melt viscosity at 60-170° C. online; and adjusting the 60-170° C. melt viscosity by adding a second plasticizer and/or a second polyvinyl acetal resin to the first melt stream in an amount to provide a second melt stream with a melt viscosity at 60-170° C. having a difference of at most 20% to the predefined melt viscosity at 60-170° C.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: January 26, 2021
    Assignee: KURARAY EUROPE GmbH
    Inventors: Michael Haerth, Daniel Wenzlik
  • MULTI-LAYER FILMS BASED ON POLYVINYL ACETAL WITH HIGH PLASTICIZER CONTENT
    Publication number: 20200047468
    Abstract: An interlayer film for laminated glazing has at least one first and at least one second layer, each layer containing plasticized polyvinyl acetal, the first layer comprising polyvinyl acetal having a polyvinyl alcohol content from 10 to 16% by weight and a plasticizer content of at least 33% by weight, wherein the interlayer film has a total plasticiser content of at least 29% by weight and, when laminated between two glass panes of 2.1 mm thickness, exhibits after at least 4 weeks aging after lamination, a second mode frequency f2 according to ISO PAS 16940 of less than 720 Hz.
    Type: Application
    Filed: October 1, 2017
    Publication date: February 13, 2020
    Applicant: KURARAY EUROPE GMBH
    Inventors: Uwe KELLER, Jan BEEKHUIZEN, Philipp LELLIG, Michael HAERTH
  • Method For Producing Films Based On Plasticized Polyvinyl Acetal Having A Predefined Viscosity
    Publication number: 20180326638
    Abstract: Plasiticized polyvinylacetal films with grater film-to-film uniformity are produced by a process of extruding a melt stream containing a polyvinyl acetal and a plasticizer at 150-250° C., the film having a predefined melt viscosity at 60-170° C., by providing a first melt stream of at least a first plasticizer and a first polyvinyl acetal resin and measuring its melt viscosity at 60-170° C. online; and adjusting the 60-170° C. melt viscosity by adding a second plasticizer and/or a second polyvinyl acetal resin to the first melt stream in an amount to provide a second melt stream with a melt viscosity at 60-170° C. having a difference of at most 20% to the predefined melt viscosity at 60-170° C.
    Type: Application
    Filed: April 26, 2018
    Publication date: November 15, 2018
    Applicant: KURARAY EUROPE GMBH
    Inventors: Michael HAERTH, Daniel WENZLIK