Patents by Inventor Wataru TAKARADA

Wataru TAKARADA 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).

  • Nonwoven fabric and filter
    Patent number: 11491429
    Abstract: A nonwoven fabric, including fibers, in which the fibers have an elongational viscosity, as measured under conditions at an elongational strain rate of 2.5×102 (1/s) and a temperature of 160° C., of from 430 Pa·s to 1200 Pa·s, and a ratio of the elongational viscosity (Pa·s) to a shear viscosity (Pa·s) of the fiber, as measured under conditions at a shear strain rate of 2.5×102 (1/s) and a temperature of 160° C., is from 35 to 65.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: November 8, 2022
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Kozo Iiba, Takeshi Kikutani, Wataru Takarada, Sho Hatano
  • NONWOVEN FABRIC AND FILTER
    Publication number: 20210077930
    Abstract: A nonwoven fabric, including fibers, in which the fibers have an elongational viscosity, as measured under conditions at an elongational strain rate of 2.5×102 (1/s) and a temperature of 160° C., of from 430 Pa·s to 1200 Pa·s, and a ratio of the elongational viscosity (Pa·s) to a shear viscosity (Pa·s) of the fiber, as measured under conditions at a shear strain rate of 2.5×102 (1/s) and a temperature of 160° C., is from 35 to 65.
    Type: Application
    Filed: October 26, 2018
    Publication date: March 18, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Kozo IIBA, Takeshi KIKUTANI, Wataru TAKARADA, Sho HATANO
  • Biodegradable aliphatic polyester fiber and method for producing the same
    Patent number: 10760183
    Abstract: An objective is to improve the spinnability and the productivity and increase the tensile strength of a polyester fiber containing polyhydroxyalkanoate. Disclosed is a biodegradable aliphatic polyester fiber containing a polyhydroxyalkanoate, a nucleating agent, and a lubricant, wherein the nucleating agent contains pentaerythritol, and the lubricant contains at least one of behenic amide, stearic acid amide, erucamide, oleic amide, and a combination thereof.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: September 1, 2020
    Assignees: TOKYO INSTITUTE OF TECHNOLOGY, KANEKA CORPORATION
    Inventors: Takeshi Kikutani, Wataru Takarada, Noriyuki Suzuki, Sarah Siti, Ryuji Fukuda
  • BIODEGRADABLE ALIPHATIC POLYESTER FIBER AND METHOD FOR PRODUCING THE SAME
    Publication number: 20190003082
    Abstract: An objective is to improve the spinnability and the productivity and increase the tensile strength of a polyester fiber containing polyhydroxyalkanoate. Disclosed is a biodegradable aliphatic polyester fiber containing a polyhydroxyalkanoate, a nucleating agent, and a lubricant, wherein the nucleating agent contains pentaerythritol, and the lubricant contains at least one of behenic amide, stearic acid amide, erucamide, oleic amide, and a combination thereof.
    Type: Application
    Filed: January 11, 2017
    Publication date: January 3, 2019
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, KANEKA CORPORATION
    Inventors: Takeshi KIKUTANI, Wataru TAKARADA, Noriyuki SUZUKI, Sarah SITI, Ryuji FUKUDA
  • Polyester fiber
    Patent number: 9732443
    Abstract: An object of the present invention is to improve spinnability, productivity, and tensile strength of a polyester fiber containing poly(3-hydroxybutyrate-co-3-hydroxyhexanoate). By spinning the polyester resin containing the poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) at a high spinning velocity, the spinnability, productivity, and tensile strength of the polyester fiber can be improved.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: August 15, 2017
    Assignees: TOKYO INSTITUTE OF TECHNOLOGY, KANEKA CORPORATION
    Inventors: Takeshi Kikutani, Wataru Takarada, Noriyuki Suzuki, Tetsuya Minami, Takahiko Sugaya
  • POLYESTER FIBER
    Publication number: 20160230313
    Abstract: An object of the present invention is to improve spinnability, productivity, and tensile strength of a polyester fiber containing poly(3-hydroxybutyrate-co-3-hydroxyhexanoate). By spinning the polyester resin containing the poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) at a high spinning velocity, the spinnability, productivity, and tensile strength of the polyester fiber can be improved.
    Type: Application
    Filed: July 16, 2014
    Publication date: August 11, 2016
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, KANEKA CORPORATION
    Inventors: Takeshi KIKUTANI, Wataru TAKARADA, Noriyuki SUZUKI, Tetsuya MINAMI, Takahiko SUGAYA