Patents by Inventor Takeshi KUSUDO

Takeshi KUSUDO 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).

  • Polyvinyl acetal with reduced flowability
    Patent number: 10875941
    Abstract: Polyvinyl acetals with a degree of acetalization of 70-84 mol %, and characterized by a molar ratio of the amount of continuous syndiotactic sequences of vinyl alcohol groups with 3 members of at least 0.152, based on the total amount of vinyl alcohol groups in the polyvinyl acetal, have exceptionally low melt flow.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: December 29, 2020
    Assignee: KURARAY EUROPE GMBH
    Inventors: Martin Steuer, Daniel Wenzlik, Takeshi Kusudo, Uwe Keller
  • Multilayer film comprising layer of plasticized polyvinyl acetal with reduced flowability
    Patent number: 10603882
    Abstract: A multilayer laminating film contains at least one first and one second layer of plasticized polyvinyl acetal, wherein the first layer comprises a first plasticizer and a first polyvinyl acetal with a degree of acetalization of 75.1-84.0 mol % and a molar ratio of continuous sequences of vinyl alcohol groups with 5 members with a stereochemical sequence of rrrr of more than 0.23 based on the total amount of continuous syndiotactic sequences of vinyl alcohol groups with 3 members in the polyvinyl acetal, and the second layer comprises a second plasticizer and a second polyvinyl acetal with a degree of acetalization of 60-84 mol %.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: March 31, 2020
    Assignee: KURARAY EUROPE GMBH
    Inventors: Martin Steuer, Daniel Wenzlik, Takeshi Kusudo, Philipp Lellig, Uwe Keller
  • MULTILAYER FILM COMPRISING LAYER OF PLASTICIZED POLYVINYL ACETAL WITH REDUCED FLOWABILITY
    Publication number: 20190152208
    Abstract: A multilayer laminating film contains at least one first and one second layer of plasticized polyvinyl acetal, wherein the first layer comprises a first plasticizer and a first polyvinyl acetal with a degree of acetalization of 75.1-84.0 mol % and a molar ratio of continuous sequences of vinyl alcohol groups with 5 members with a stereochemical sequence of rrrr of more than 0.23 based on the total amount of continuous syndiotactic sequences of vinyl alcohol groups with 3 members in the polyvinyl acetal, and the second layer comprises a second plasticizer and a second polyvinyl acetal with a degree of acetalization of 60-84 mol %.
    Type: Application
    Filed: April 5, 2017
    Publication date: May 23, 2019
    Applicant: KURARAY EUROPE GMBH
    Inventors: Martin STEUER, Daniel WENZLIK, Takeshi KUSUDO, Philipp LELLIG, Uwe KELLER
  • POLYVINYL ACETAL WITH REDUCED FLOWABILITY
    Publication number: 20190112397
    Abstract: Polyvinyl acetals with a degree of acetalization of 70-84 mol %, and characterized by a molar ratio of the amount of continuous syndiotactic sequences of vinyl alcohol groups with 3 members of at least 0.152, based on the total amount of vinyl alcohol groups in the polyvinyl acetal, have exceptionally low melt flow.
    Type: Application
    Filed: April 5, 2017
    Publication date: April 18, 2019
    Applicant: KURARAY EUROPE GMBH
    Inventors: Martin STEUER, Daniel WENZLIK, Takeshi KUSUDO, Uwe KELLER