Patents by Inventor Kazumasa Mizui

Kazumasa Mizui 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).

  • Air filter material
    Patent number: 7968176
    Abstract: An air filter material includes a laminate of an air inlet layer and an air outlet layer, and has a mean flow pore size of 20 ?m to 40 ?m, a minimum pore size of 2.4 ?m to 3.8 ?m, and a maximum pore size of 80 ?m or less. The air inlet layer is a needle punched nonwoven fabric layer having an areal fiber weight of 55 g/m2 to 100 g/m2. The air outlet layer is a laminated spunlace nonwoven fabric made by laminating at least two or more spunlace nonwoven fabric layers having an areal fiber weight of 20 g/m2 to 60 g/m2, a mean flow pore size of 50 ?m to 90 ?m, a minimum pore size of 3.0 ?m to 10.0 ?m, and a maximum pore size of 180 ?m or less.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: June 28, 2011
    Assignee: Dynic Corporation
    Inventors: Norio Umezu, Kazumasa Mizui
  • Air filter material
    Publication number: 20080070022
    Abstract: An air filter material includes a laminate of an air inlet layer and an air outlet layer, and has a mean flow pore size of 20 ?m to 40 ?m, a minimum pore size of 2.4 ?m to 3.8 ?m, and a maximum pore size of 80 ?m or less. The air inlet layer is a needle punched nonwoven fabric layer having an areal fiber weight of 55 g/m2 to 100 g/m2. The air outlet layer is a laminated spunlace nonwoven fabric made by laminating at least two or more spunlace nonwoven fabric layers having an areal fiber weight of 20 g/m2 to 60 g/m2, a mean flow pore size of 50 ?m to 90 ?m, a minimum pore size of 3.0 ?m to 10.0 ?m, and a maximum pore size of 180 ?m or less.
    Type: Application
    Filed: July 2, 2007
    Publication date: March 20, 2008
    Applicant: DYNIC CORPORATION
    Inventors: Norio Umezu, Kazumasa Mizui