Patents by Inventor Aki KURUMIYA

Aki KURUMIYA 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 tubes
    Patent number: 11529787
    Abstract: A multilayer tube is provided which includes a layer including a specific aliphatic polyamide composition and a layer including a semi-aromatic polyamide composition including a semi-aromatic polyamide with a specific structure, these layers being adjacent to each other, wherein the aliphatic polyamide composition includes an aliphatic polyamide having a specific ratio of the number of methylene groups to the number of amide groups, a polyamide having a specific difference in absolute value of solubility parameter SP from the aliphatic polyamide, and an elastomer polymer including a structural unit derived from an unsaturated compound having a carboxyl group and/or an acid anhydride group.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: December 20, 2022
    Assignee: UBE INDUSTRIES, LTD.
    Inventors: Aki Kurumiya, Koji Nakamura
  • MULTILAYER TUBES
    Publication number: 20190091962
    Abstract: A multilayer tube is provided which includes a layer including a specific aliphatic polyamide composition and a layer including a semi-aromatic polyamide composition including a semi-aromatic polyamide with a specific structure, these layers being adjacent to each other, wherein the aliphatic polyamide composition includes an aliphatic polyamide having a specific ratio of the number of methylene groups to the number of amide groups, a polyamide having a specific difference in absolute value of solubility parameter SP from the aliphatic polyamide, and an elastomer polymer including a structural unit derived from an unsaturated compound having a carboxyl group and/or an acid anhydride group.
    Type: Application
    Filed: March 31, 2017
    Publication date: March 28, 2019
    Applicant: UBE INDUSTRIES, LTD.
    Inventors: Aki KURUMIYA, Koji NAKAMURA