Patents Assigned to Mitsubishi Adetate Co. Ltd.
  • Method for producing a tobacco smoke filter plug
    Patent number: 4411641
    Abstract: A method and apparatus for producing a tobacco smoke filter having a double structure composed of one inner core phase in a special fibrous arrangement and an outer skin layer in a different fibrous arrangement surrounding the core phase. The tobacco smoke filters made according to the present invention possess high collapse strength and physical and chemical characteristics in which the tastable components are filtered with low efficiency, while the tar and other particulate harmful matter are filtered with high efficiency.
    Type: Grant
    Filed: September 28, 1981
    Date of Patent: October 25, 1983
    Assignees: Mitsubishi Rayon Co. Ltd., Mitsubishi Adetate Co. Ltd.
    Inventors: Migaku Suzuki, Takashi Sakai