Patents by Inventor Haruki Ohfuji

Haruki Ohfuji 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).

  • Aqueous polyolefin resin dispersion
    Patent number: 10072143
    Abstract: Disclosed is an aqueous polyolefin resin dispersion including a polyolefin resin and an aqueous medium, wherein the polyolefin resin includes an olefin component and an unsaturated carboxylic acid component as copolymer components; the olefin component includes propylene (A) and an olefin(s) (B) other than propylene; the mass ratio (A/B) between the propylene (A) and the olefin(s) (B) other than propylene is 60/40 to 95/5; the content of the unsaturated carboxylic acid component as the copolymer component is 1 part by mass or more in relation to 100 parts by mass of the total mass of (A) and (B); and the content of the unsaturated carboxylic acid monomer in the dry residue of the aqueous dispersion is 10,000 ppm or less.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: September 11, 2018
    Assignee: Unitika Ltd.
    Inventors: Haruki Ohfuji, Nobuyasu Okumura, Takuma Yano, Kenjin Shiba
  • AQUEOUS POLYOLEFIN RESIN DISPERSION
    Publication number: 20160280901
    Abstract: Disclosed is an aqueous polyolefin resin dispersion including a polyolefin resin and an aqueous medium, wherein the polyolefin resin includes an olefin component and an unsaturated carboxylic acid component as copolymer components; the olefin component includes propylene (A) and an olefin(s) (B) other than propylene; the mass ratio (A/B) between the propylene (A) and the olefin(s) (B) other than propylene is 60/40 to 95/5; the content of the unsaturated carboxylic acid component as the copolymer component is 1 part by mass or more in relation to 100 parts by mass of the total mass of (A) and (B); and the content of the unsaturated carboxylic acid monomer in the dry residue of the aqueous dispersion is 10,000 ppm or less.
    Type: Application
    Filed: December 3, 2014
    Publication date: September 29, 2016
    Applicant: UNITIKA LTD.
    Inventors: Haruki Ohfuji, Nobuyasu Okumura, Takuma Yano, Kenjin Shiba