Patents by Inventor Kenta KUMAKURA

Kenta KUMAKURA 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).

  • METHOD FOR SEPARATING JOINED OBJECT
    Publication number: 20230312990
    Abstract: To provide a separation method for a joined object for display device, by which PSA can be peeled off even when the PSA is tightly bonded to a member in the joined object. Provided is a method for separating a joined object for display device. In this method, the joined object comprises two members joined with a PSA comprising a hydrophilicity enhancer. The method comprises a step of peeling the PSA from the member by supplying steam towards the PSA.
    Type: Application
    Filed: July 13, 2021
    Publication date: October 5, 2023
    Applicant: NITTO DENKO CORPORATION
    Inventors: Naofumi KOSAKA, Yosuke SHIMIZU, Kenta KUMAKURA
  • PRESSURE-SENSITIVE ADHESIVE SHEET AND USE THEREOF
    Publication number: 20230144464
    Abstract: Provided is a PSA sheet that can combine bonding reliability and peeling removability, and further can be peeled off without causing deformation or damage to the adherend in various peeling modes. The PSA sheet provided by this invention has a PSA layer. The PSA sheet has a water-peel strength of 2 N/10 mm or less. The PSA sheet further has a stress at 100 % elongation of less than 30 MPa as well as a multiplication product (?f-?f) of fracture stress ?f (MPa) and fracture strain ?f (%) of 250 or greater.
    Type: Application
    Filed: February 24, 2021
    Publication date: May 11, 2023
    Inventors: Yosuke SHIMIZU, Naofumi KOSAKA, Ryoko ASAI, Kenta KUMAKURA