Patents by Inventor Kohei Hatakeda

Kohei Hatakeda 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).

  • Polymerized rosin compound and production method therefor
    Patent number: 10392465
    Abstract: A polymerized rosin compound includes a rosin dimer component (A) including a bifunctional rosin dimer component (a1) represented by formula (1): ROOC—X—COOR. In this formula, X represents a rosin dimer residue derived from abietic acid, neoabietic acid, or palustric acid, which are resin acids having conjugated double bonds; and R represents hydrogen, an alkyl group of I to 5 carbon atoms, or a benzyl group. The rosin dimer component (A) contains a bifunctional rosin dimer component (a1) in the amount of 80% by weight or more and a rosin trimer or higher oligomer component (B) in the range from 1.5 to 3.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: August 27, 2019
    Assignee: Arakawa Chemical Industries, Ltd.
    Inventors: Yoshimasa Sato, Naoki Kamatani, Kouji Takahashi, Kohei Hatakeda, Hideharu Takeuchi
  • POLYMERIZED ROSIN COMPOUND AND PRODUCTION METHOD THEREFOR
    Publication number: 20170152341
    Abstract: The polymerized rosin compound of the invention includes a rosin dimer component (A) including a bifunctional rosin dimer component (a1) represented by formula (1): ROOC—X—COOR, wherein X represents a rosin dimer residue, and R represents hydrogen, an alkyl group of 1 to 5 carbon atoms, or a benzyl group, wherein the rosin dimer component (A) contains a content of the bifunctional rosin dimer component (a1) of 80% by weight or more and the polymerized rosin compound contains a content of the rosin dimer component (A) of 80% by weight or more. The polymerized rosin compound contains a large amount of the bifunctional rosin dimer component and makes it possible to obtain linear polymer with a high molecular weight.
    Type: Application
    Filed: August 20, 2013
    Publication date: June 1, 2017
    Inventors: Yoshimasa Sato, Naoki Kamatani, Kouji Takahashi, Kohei Hatakeda, Hideharu Takeuchi
  • POLYMERIZED ROSIN COMPOUND AND PRODUCTION METHOD THEREFOR
    Publication number: 20150232604
    Abstract: The polymerized rosin compound of the invention includes a rosin dimer component (A) including a bifunctional rosin dimer component (a1) represented by formula (1): ROOC—X—COOR, wherein X represents a rosin dimer residue, and R represents hydrogen, an alkyl group of 1 to 5 carbon atoms, or a benzyl group, wherein the rosin dimer component (A) contains a content of the bifunctional rosin dimer component (a1) of 80% by weight or more and the polymerized rosin compound contains a content of the rosin dimer component (A) of 80% by weight or more. The polymerized rosin compound contains a large amount of the bifunctional rosin dimer component and makes it possible to obtain linear polymer with a high molecular weight.
    Type: Application
    Filed: August 20, 2012
    Publication date: August 20, 2015
    Inventors: Yoshimasa Sato, Naoki Kamatani, Kouji Takahashi, Kohei Hatakeda, Hideharu Takeuchi