Patents by Inventor Yumi OKUI

Yumi OKUI 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).

  • Polyacetal resin composition and article molded therefrom
    Patent number: 11299618
    Abstract: The present invention provides a polyacetal resin composition comprising (A) a polyacetal resin and (B) zinc oxide, wherein the content of oxyalkylene constituent units other than an oxymethylene group in the polyacetal resin (A) is 0.1% by mass or more, and wherein the total surface area of the zinc oxide (B) in the polyacetal resin composition is 0.1 to 40 m2 per 100 g of the polyacetal resin (A); as well as an article molded therefrom.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: April 12, 2022
    Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., THAI POLYACETAL CO., LTD.
    Inventors: Yumi Okui, Daisuke Kobayashi, Akira Ito, Daisuke Sunaga, Yupin Pattamamongkolchai, Sanit Palaharn
  • Trioxane composition and method for storing same
    Patent number: 10227448
    Abstract: The present invention provides a trioxane composition which comprises trioxane as a main component, an antioxidant, and at least one alkaline organic compound selected from the group consisting of an amine compound having an alcoholic hydroxy group in the molecule thereof, a thiocarbamate compound, and an organophosphorus compound, wherein the amount of the alkaline organic compound contained is 0.01 to 10 ppm, based on the trioxane, and wherein the trioxane composition is a liquid.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: March 12, 2019
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yumi Okui, Daisuke Kobayashi, Akira Ito
  • TRIOXANE COMPOSITION AND METHOD FOR STORING SAME
    Publication number: 20180118885
    Abstract: The present invention provides a trioxane composition which comprises trioxane as a main component, an antioxidant, and at least one alkaline organic compound selected from the group consisting of an amine compound having an alcoholic hydroxy group in the molecule thereof, a thiocarbamate compound, and an organophosphorus compound, wherein the amount of the alkaline organic compound contained is 0.01 to 10 ppm, based on the trioxane, and wherein the trioxane composition is a liquid.
    Type: Application
    Filed: December 29, 2017
    Publication date: May 3, 2018
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yumi OKUI, Daisuke KOBAYASHI, Akira ITO
  • Trioxane composition and method for storing the same
    Patent number: 9902806
    Abstract: The present invention provides a trioxane composition which comprises trioxane as a main component, an antioxidant, and at least one alkaline organic compound selected from the group consisting of an amine compound having an alcoholic hydroxy group in the molecule thereof, a thiocarbamate compound, and an organophosphorus compound, wherein the amount of the alkaline organic compound contained is 0.01 to 10 ppm, based on the trioxane, and wherein the trioxane composition is a liquid.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: February 27, 2018
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yumi Okui, Daisuke Kobayashi, Akira Ito
  • POLYACETAL RESIN COMPOSITION AND ARTICLE MOLDED THEREFROM
    Publication number: 20170327682
    Abstract: The present invention provides a polyacetal resin composition comprising (A) a polyacetal resin and (B) zinc oxide, wherein the content of oxyalkylene constituent units other than an oxymethylene group in the polyacetal resin (A) is 0.1% by mass or more, and wherein the total surface area of the zinc oxide (B) in the polyacetal resin composition is 0.1 to 40 m2 per 100 g of the polyacetal resin (A); as well as an article molded therefrom.
    Type: Application
    Filed: December 15, 2015
    Publication date: November 16, 2017
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., THAI POLYACETAL CO., LTD .
    Inventors: Yumi OKUI, Daisuke KOBAYASHI, Akira ITO, Daisuke SUNAGA, Yupin PATTAMAMONGKOLCHAI, Sanit PALAHARN
  • TRIOXANE COMPOSITION AND METHOD FOR STORING THE SAME
    Publication number: 20160168324
    Abstract: The present invention provides a trioxane composition which comprises trioxane as a main component, an antioxidant, and at least one alkaline organic compound selected from the group consisting of an amine compound having an alcoholic hydroxy group in the molecule thereof, a thiocarbamate compound, and an organophosphorus compound, wherein the amount of the alkaline organic compound contained is 0.01 to 10 ppm, based on the trioxane, and wherein the trioxane composition is a liquid.
    Type: Application
    Filed: June 30, 2014
    Publication date: June 16, 2016
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yumi OKUI, Daisuke KOBAYASHI, Akira ITO