Patents by Inventor Takuya HOSOKAWA

Takuya HOSOKAWA 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).

  • Patent number: 11133428
    Abstract: The present invention pertains to a light absorption layer for forming a solar cell and a photoelectric conversion element having excellent durability and photoelectric conversion efficiency in the near infrared region, and a solar cell and a photoelectric conversion element having the light absorption layer. This light absorption layer contains a perovskite compound having a band gap energy of 1.7-4.0 eV, and a quantum dot having a band gap energy equal to or higher than 0.2 eV and equal to or lower than the band gap energy of the perovskite compound.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: September 28, 2021
    Assignee: KAO CORPORATION
    Inventors: Hiroji Hosokawa, Takuya Sawada, Yohei Shiraishi
  • Publication number: 20210017037
    Abstract: The present invention manufactures titanium oxide particles that have a small degree of aggregation (size of aggregate particle diameter relative to primary particle diameter) and are not readily sintered by heating. The present invention has: a step in which an alkali and a solution including a carboxylic acid and a titanium (oxy)chloride are mixed, and the titanium (oxy)chloride is hydrolyzed by neutralization; and a step in which, after the hydrolysis by neutralization, the solution is heated to a temperature of 80° C. or more and 110° C. or less, and the titanium (oxy)chloride remaining in the solution is hydrolyzed by heating.
    Type: Application
    Filed: March 27, 2019
    Publication date: January 21, 2021
    Inventors: Masanori TOMONARI, Kiyonobu IDA, Takuya HOSOKAWA