Patents by Inventor Kouji Umemoto

Kouji Umemoto 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, COMPOSITION FOR ORGANIC ELECTROLUMINESCENT ELEMENT, ORGANIC ELECTROLUMINESCENT ELEMENT, ORGANIC EL DISPLAY DEVICE, ORGANIC EL LIGHTING, AND MANUFACTURING METHOD FOR ORGANIC ELECTROLUMINESCENT ELEMENT
    Publication number: 20240107870
    Abstract: Provided are: a highly durable polymer having a high hole-injection/transport capacity; and a composition for an organic electroluminescent element, which contains the polymer.
    Type: Application
    Filed: November 1, 2023
    Publication date: March 28, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yanjun LI, Tomokazu UMEMOTO, Hideki GOROHMARU, Koichiro IIDA, Kouji ADACHI
  • Polymer, composition for organic electroluminescent element, organic electroluminescent element, organic EL display device, organic EL lighting, and manufacturing method for organic electroluminescent element
    Patent number: 11943997
    Abstract: Provided are: a highly durable polymer having a high hole-injection/transport capacity; and a composition for an organic electroluminescent element, which contains the polymer.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: March 26, 2024
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yanjun Li, Tomokazu Umemoto, Hideki Gorohmaru, Koichiro Iida, Kouji Adachi
  • Storage system and snapshot management method thereof
    Patent number: 7133987
    Abstract: In a novel snapshot management method for a data storage system which does not use duplication (mirroring), when a snapshot of a main volume pertaining to a designated time is being taken, every time a write request to a storage region in the main volume is received, if the data in that storage region has not been copied to an auxiliary volume since the designated time, that data is copied to the auxiliary volume, and the writing to the storage region is carried out after that. In the case of sequential writing, also for data in a further storage region, following the target storage region, on which it is predicted that sequential writing will be carried out henceforth, if copying to the auxiliary volume has not been carried out since the designated time, the data is copied to the auxiliary volume in the same way.
    Type: Grant
    Filed: February 3, 2004
    Date of Patent: November 7, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Haruaki Watanabe, Shigeo Homma, Takao Sato, Kouji Umemoto
  • Storage system and snapshot management method thereof
    Publication number: 20040181642
    Abstract: A novel snapshot management method for a data storage system which does not use duplication (mirroring) and has reduced processing load and improved response time. For example in a RAID storage system, when a snapshot of a main volume pertaining to a designated time is being taken, every time a write request to a storage region in the main volume is received, if the data in that storage region has not been copied to an auxiliary volume since the designated time, that data is copied to the auxiliary volume, and the writing to the storage region is carried out after that. In the case of sequential writing, also for data in a further storage region, following the target storage region, on which it is predicted that sequential writing will be carried out henceforth, if copying to the auxiliary volume has not been carried out since the designated time, the data is copied to the auxiliary volume in the same way.
    Type: Application
    Filed: February 3, 2004
    Publication date: September 16, 2004
    Inventors: Haruaki Watanabe, Shigeo Homma, Takao Sato, Kouji Umemoto