Patents by Inventor Ryosuke YAMAUCHI

Ryosuke YAMAUCHI 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).

  • Publication number: 20210403836
    Abstract: A semiconductor cleaning agent containing a sulfonic acid group-containing polymer, wherein a content of at least one metal selected from the group consisting of Na, Al, K, Ca and Fe is 0.7 ppm or less.
    Type: Application
    Filed: October 30, 2019
    Publication date: December 30, 2021
    Applicant: TOAGOSEI CO., LTD.
    Inventors: Ryosuke YAMAUCHI, Akihiro GOTOU
  • Publication number: 20150113210
    Abstract: There is provided a data storage flash memory management method that does not require a management area and can reduce an access load. A data storage flash memory management method for storing k time-varying parameters (k is a positive integer) in a flash memory including j blocks (j is an even number not less than 2) as erase units is configured as follows. The j blocks are divided into two areas which are a primary macroblock and a secondary macroblock, each including j/2 blocks. Each of the primary macroblock and the secondary macroblock is divided into k or more segments each having an equal memory capacity, with one of the macroblocks as an active system and the other as a standby system. The k parameters are one-to-one associated with k segments of the k or more segments, and each parameter is written or read to/from a corresponding segment in an active-system macroblock.
    Type: Application
    Filed: October 8, 2014
    Publication date: April 23, 2015
    Inventors: Shinichi SUZUKI, Ryosuke YAMAUCHI