Patents by Inventor Keisuke Sako

Keisuke Sako 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).

  • ADHESIVE WITH PRESSURE REGULATION FUNCTION
    Publication number: 20260125583
    Abstract: An adhesive with a pressure regulation function of the present invention is the adhesive configured to be adhered to a resin adherend including a vapor release port in order to seal the vapor release port. Adhesive strength reduces by heat of vapor released from the vapor release port, and peeling occurs to release vapor by pressure of vapor. The adhesive is capable of resealing the vapor release port after vapor release, and no external force may be required for resealing. The adhesive may include a pressure sensitive adhesive, and a side chain crystalline polymer including, as a monomer component, (meth)acrylate having a straight-chain alkyl group with a carbon number of 12 to 30.
    Type: Application
    Filed: October 6, 2023
    Publication date: May 7, 2026
    Applicant: NITTA CORPORATION
    Inventors: Takumi KATO, Keisuke SAKO
  • Acrylate based adhesive composition for optical use, acrylate based adhesive sheet for optical use, and method for separating optical component using the same
    Patent number: 9598617
    Abstract: Disclosed is an acrylate based adhesive composition for optical use that includes: a copolymer prepared by polymerizing an alkyl (meth)acrylate (wherein the alkyl is a C16 to C22 linear alkyl group) in an amount of about 1 to about 10 parts by weight, an alkyl (meth)acrylate (wherein the alkyl is a C1 to C12 alkyl group) in an amount of about 70 to about 98 parts by weight, and a polar monomer in an amount of about 1 to about 20 parts by weight; and a cross-linking agent. The cross-linking agent is included in an amount of about 0.5 to 5 parts by weight based on 100 parts by weight of the copolymer.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: March 21, 2017
    Assignees: Samsung Display Co., Ltd., NITTA CORPORATION
    Inventors: Dong-Sun Lee, Sang-Hyun Lim, Dae-Guen Choi, Hak-Sun Kim, Shinichiro Kawahara, Minoru Nanchi, Keisuke Sako, Yuta Irie, Satoshi Yamaguchi
  • ACRYLATE BASED ADHESIVE COMPOSITION FOR OPTICAL USE, ACRYLATE BASED ADHESIVE SHEET FOR OPTICAL USE, AND METHOD FOR SEPARATING OPTICAL COMPONENT USING THE SAME
    Publication number: 20160145474
    Abstract: Disclosed is an acrylate based adhesive composition for optical use that includes: a copolymer prepared by polymerizing an alkyl (meth)acrylate (wherein the alkyl is a C16 to C22 linear alkyl group) in an amount of about 1 to about 10 parts by weight, an alkyl (meth)acrylate (wherein the alkyl is a C1 to C12 alkyl group) in an amount of about 70 to about 98 parts by weight, and a polar monomer in an amount of about 1 to about 20 parts by weight; and a cross-linking agent. The cross-linking agent is included in an amount of about 0.5 to 5 parts by weight based on 100 parts by weight of the copolymer.
    Type: Application
    Filed: December 1, 2015
    Publication date: May 26, 2016
    Inventors: Dong-Sun Lee, Sang-Hyun Lim, Dae-Guen Choi, Hak-Sun Kim, Shinichiro Kawahara, Minoru Nanchi, Keisuke Sako, Yuta lrie, Satoshi Yamaguchi
  • Acrylate based adhesive composition for optical use, acrylate based adhesive sheet for optical use, and method for separating optical component using the same
    Patent number: 9221231
    Abstract: Disclosed is an acrylate based adhesive composition for optical use that includes: a copolymer prepared by polymerizing an alkyl (meth)acrylate (wherein the alkyl is a C16 to C22 linear alkyl group) in an amount of about 1 to about 10 parts by weight, an alkyl (meth)acrylate (wherein the alkyl is a C1 to C12 alkyl group) in an amount of about 70 to about 98 parts by weight, and a polar monomer in an amount of about 1 to about 20 parts by weight; and a cross-linking agent. The cross-linking agent is included in an amount of about 0.5 to 5 parts by weight based on 100 parts by weight of the copolymer.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: December 29, 2015
    Assignees: Samsung Display Co., Ltd., NITTA CORPORATION
    Inventors: Dong-Sun Lee, Sang-Hyun Lim, Dae-Guen Choi, Hak-Sun Kim, Shinichiro Kawahara, Minoru Nanchi, Keisuke Sako, Yuta Irie, Satoshi Yamaguchi
  • ACRYLATE BASED ADHESIVE COMPOSITION FOR OPTICAL USE, ACRYLATE BASED ADHESIVE SHEET FOR OPTICAL USE, AND METHOD FOR SEPARATING OPTICAL COMPONENT USING THE SAME
    Publication number: 20130126079
    Abstract: Disclosed is an acrylate based adhesive composition for optical use that includes: a copolymer prepared by polymerizing an alkyl(meth)acrylate (wherein the alkyl is a C16 to C22 linear alkyl group) in an amount of about 1 to about 10 parts by weight, an alkyl(meth)acrylate (wherein the alkyl is a C1 to C12 alkyl group) in an amount of about 70 to about 98 parts by weight, and a polar monomer in an amount of about 1 to about 20 parts by weight; and a cross-linking agent. The cross-linking agent is included in an amount of about 0.5 to 5 parts by weight based on 100 parts by weight of the copolymer.
    Type: Application
    Filed: September 6, 2012
    Publication date: May 23, 2013
    Applicants: NITTA CORPORATION, SAMSUNG DISPLAY CO, LTD.
    Inventors: Dong-Sun Lee, Sang-Hyun Lim, Dae-Guen Choi, Hak-Sun Kim, Shinichiro Kawahara, Minoru Nanchi, Keisuke Sako, Yuta Irie, Satoshi Yamaguchi