Patents by Inventor Kazuhiro MORIWAKI

Kazuhiro MORIWAKI 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).

  • Copper Powder, and Method for Manufacturing Copper Powder
    Publication number: 20230311207
    Abstract: A copper powder containing copper particulates, wherein the copper powder has a number of particles with a particle size of 1.5 pm or more of 10000 or less per 10 mL of a solution, as measured in the solution using an in-liquid particle counter, the solution having a copper ion concentration of 10 g/L and being obtained by dissolving the copper particulates of the copper powder in nitric acid.
    Type: Application
    Filed: September 14, 2021
    Publication date: October 5, 2023
    Inventor: Kazuhiro Moriwaki
  • Etching agent for semiconductor substrate
    Patent number: 10106736
    Abstract: The present invention relates to an alkaline etching agent for treating a surface of a semiconductor substrate for solar cells, containing at least one hydroxystyrene polymer represented by the general formula (1) and an alkaline agent. According to the present invention, some effects are exhibited that the texture formation is made possible to a semiconductor substrate for solar cells at relatively lower temperatures with a shorter amount of time, thereby having excellent productivity.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: October 23, 2018
    Assignee: SETTSU OIL MILL., INC.
    Inventors: Seimei Akagi, Yoshiteru Kamada, Noboru Ohyagi, Toshinori Saida, Kazuhiro Moriwaki, Yuzo Yamamoto
  • ETCHING AGENT FOR SEMICONDUCTOR SUBSTRATE
    Publication number: 20170306229
    Abstract: The present invention relates to an alkaline etching agent for treating a surface of a semiconductor substrate for solar cells, containing at least one hydroxystyrene polymer represented by the general formula (1) and an alkaline agent. According to the present invention, some effects are exhibited that the texture formation is made possible to a semiconductor substrate for solar cells at relatively lower temperatures with a shorter amount of time, thereby having excellent productivity.
    Type: Application
    Filed: October 20, 2015
    Publication date: October 26, 2017
    Applicant: SETTSU OIL MILL., INC.
    Inventors: Seimei AKAGI, Yoshiteru KAMADA, Noboru OHYAGI, Toshinori SAIDA, Kazuhiro MORIWAKI, Yuzo YAMAMOTO