Patents by Inventor Ryuichi Mukai

Ryuichi Mukai 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).

  • Polymer, Resist Composition, Method for Manufacturing Substrate Having Pattern Formed Therein, and (Meth)Acrylic Ester and Production Method Therefor
    Publication number: 20240092956
    Abstract: Provided is a polymer including a constituent unit (1) based on a monomer represented by Formula (1), in which a content of a constituent unit based on a monomer having a polycyclic structure is 35 mol % or less. In Formula (1), R1 represents a hydrogen atom or a methyl group, A1 represents a linking group including an ester bond, or a single bond, where A1 has no tertiary carbon atom, and Z1 represents an atomic group forming a sulfur-containing cyclic hydrocarbon group having 3 to 6 carbon atoms, which includes a carbon atom bonded to A1, and —SO2—.
    Type: Application
    Filed: November 6, 2023
    Publication date: March 21, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kazuaki Mukai, Takeru Jo, Yoshihiro Kamon, Satoshi Sakuma, Ryuichi Ansai
  • Process for producing poly(allylamine) derivatives
    Patent number: 4559391
    Abstract: Poly(allylamine salt) of high polymerization degree is obtained in high yield by the polymerization of monoallylamine salt with a specified radical-polymerization initiator having in the molecule an azo group. Poly(allylurea) is obtained by reacting said poly(allylamine salt) with cyanic acid salts.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: December 17, 1985
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Toshio Ueda, Tadashi Kato, Ryuichi Mukai, Susumu Harada