Patents by Inventor Atsuko HASEZAWA

Atsuko HASEZAWA 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: 20210338494
    Abstract: An absorbent article includes a permeable top sheet, an impermeable back sheet, an absorbing part disposed between the top sheet and the back sheet, and a friction reducing layer disposed between the back sheet and the absorbing part. The friction between the friction reducing layer and the back sheet or the friction between the friction reducing layer and the absorbing part is less than the friction between the absorbing part and the back sheet.
    Type: Application
    Filed: July 17, 2019
    Publication date: November 4, 2021
    Inventors: Atsuko HASEZAWA, Kazuo HOKKIRIGAWA, Takeshi YAMAGUCHI, Kei SHIBATA
  • Patent number: 10925443
    Abstract: Household tissue paper is obtained by applying a ply process to two or more sheets of base paper. First embossments and second embossments, arranged around the first embossments, are formed on an entire surface of the household tissue paper, a shape of a protruding part of each of the second embossments differing from a shape of a protruding part of each of the first embossments. Hence, because a contact area with an object to be cleaned or the like can be increased, it is possible to enhance surface strength of the household tissue paper being embossed and to enhance wiping performance.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: February 23, 2021
    Assignee: DAIO PAPER CORPORATION
    Inventors: Shinya Izumi, Asako Tanaka, Atsuko Hasezawa, Shinpei Mukoyama, Kosuke Yamazaki
  • Patent number: 10422084
    Abstract: A toilet cleaning sheet 100 includes a multi-ply base paper sheet that is substantially water-dispersible. The multi-ply base paper sheet contains pulp and a water-soluble binder and is impregnated with an aqueous chemical agent. The basis weight of the multi-ply base paper sheet is 30 gsm to 150 gsm, and the content of the water-soluble binder increases towards a front surface and/or a back surface.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: September 24, 2019
    Assignee: DAIO PAPER CORPORATION
    Inventors: Shinpei Mukoyama, Shinya Izumi, Asako Tanaka, Atsuko Hasezawa
  • Publication number: 20190003128
    Abstract: A toilet cleaning sheet 100 includes a multi-ply base paper sheet that is substantially water-dispersible. The multi-ply base paper sheet contains pulp and a water-soluble binder and is impregnated with an aqueous chemical agent. The basis weight of the multi-ply base paper sheet is 30 gsm to 150 gsm, and the content of the water-soluble binder increases towards a front surface and/or a back surface.
    Type: Application
    Filed: March 30, 2016
    Publication date: January 3, 2019
    Inventors: Shinpei MUKOYAMA, Shinya IZUMI, Asako TANAKA, Atsuko HASEZAWA
  • Publication number: 20180146834
    Abstract: A hydrolysable sheet obtained by impregnating a base paper sheet, to which a water-soluble binder is added, with a chemical solution, wherein the base paper sheet is obtained by applying a ply process to a plurality of sheets of base paper and has a basis weight of from 30 gsm to 150 gsm, wherein a compounding ratio of softwood pulp to hardwood pulp is less than 1/1, wherein the chemical solution contains a cross-linking agent, which causes the water-soluble binder to initiate a cross-linking reaction, and a trihydric or higher alcohol, and wherein, with respect to a weight of the base paper sheet, the base paper sheet is impregnated with the trihydric or higher alcohol at 1% to 20% by weight.
    Type: Application
    Filed: March 30, 2016
    Publication date: May 31, 2018
    Inventors: Shinya IZUMI, Asako TANAKA, Atsuko HASEZAWA, Shinpei MUKOYAMA, Kosuke YAMAZAKI
  • Publication number: 20180098672
    Abstract: Household tissue paper is obtained by applying a ply process to two or more sheets of base paper. First embossments and second embossments, arranged around the first embossments, are formed on an entire surface of the household tissue paper, a shape of a protruding part of each of the second embossments differing from a shape of a protruding part of each of the first embossments. Hence, because a contact area with an object to be cleaned or the like can be increased, it is possible to enhance surface strength of the household tissue paper being embossed and to enhance wiping performance.
    Type: Application
    Filed: March 30, 2016
    Publication date: April 12, 2018
    Inventors: Shinya IZUMI, Asako TANAKA, Atsuko HASEZAWA, Shinpei MUKOYAMA, Kosuke YAMAZAKI