Patents by Inventor Yusuke SEKIOKA

Yusuke SEKIOKA 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).

  • Publication number: 20220119998
    Abstract: A nonwoven fabric layered body includes a first nonwoven fabric layer including a crimped fiber (A), which is a fiber made of a thermoplastic polymer and which has an average crimp diameter of 800 ?m or less; and a hydrophilic agent.
    Type: Application
    Filed: March 4, 2020
    Publication date: April 21, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Yusuke SEKIOKA, Shohei SAITA, Kosuke OTA, Koichi SHIMADA, Taiichiro ICHIKAWA
  • Publication number: 20170314174
    Abstract: A spunbond nonwoven fabric, comprising fibers of a propylene-based polymer composition containing 100 parts by mass of a propylene-based polymer (A) and 1 part by mass to 10 parts by mass of an ethylene-based polymer (B) having a density of from 0.93 g/cm3 to 0.98 g/cm3, wherein air permeability measured in accordance with JIS L 1096 (2010) by a Frazier type air permeability tester at a flow rate corresponding to a pressure differential of 125 Pa is 500 cm3/cm2/s or less.
    Type: Application
    Filed: October 30, 2015
    Publication date: November 2, 2017
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Taro ICHIKAWA, Yusuke SEKIOKA, Kuniaki KAWABE
  • Patent number: 8785574
    Abstract: According to the invention, a single or plural kinds of bridged metallocene compounds having differing cyclopentadienyl-derived groups afford macromonomers that are a source of long-chain branches and simultaneously catalyze the repolymerization of the macromonomers into olefin polymers having a large number of long-chain branches, small neck-in in the T-die extrusion, small take-up surge and superior mechanical strength. The olefin polymerization catalysts and the polymerization processes can efficiently produce the olefin polymers.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: July 22, 2014
    Assignees: Mitsui Chemicals, Inc., Prime Polymer Co., Ltd.
    Inventors: Hideki Bando, Yasuo Satoh, Takashi Yukita, Yasuyuki Harada, Yoshiho Sonobe, Yasushi Tohi, Yusuke Sekioka, Masao Suzuki, Daisuke Tanifuji
  • Publication number: 20140114031
    Abstract: Metallocene compounds of the invention are useful as olefin polymerization catalysts or catalyst components. Olefin polymerization processes of the invention involve an olefin polymerization catalyst containing the metallocene compound. In detail, the olefin polymerization catalysts can catalyze with high polymerization activity the production of olefin polymers having high melt tension, excellent mechanical strength and good particle properties, and the olefin polymerization processes involve the catalysts. Ethylene polymers according to the invention are obtained by the polymerization processes and have higher processability and easy-opening properties and particularly excellent mechanical strength compared to conventional ethylene polymers. Thermoplastic resin compositions of the invention contain the ethylene polymers.
    Type: Application
    Filed: December 20, 2013
    Publication date: April 24, 2014
    Applicant: Prime Polymer Co., Ltd.
    Inventors: Hideki BANDO, Yasuo SATOH, Takashi YUKITA, Yasuyuki HARADA, Yoshiho SONOBE, Yasushi TOHI, Yusuke SEKIOKA, Masao SUZUKI, Daisuke TANIFUJI