Patents by Inventor Takako KAI

Takako KAI 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).

  • Blood processing filter and method for producing blood processing filter
    Patent number: 11925740
    Abstract: A blood processing filter includes a container having 2 ports respectively functioning as an inlet for a liquid to be processed and as an outlet for the processed liquid, and a filtration medium filled in the container, wherein an airflow resistance of the filtration medium is 55.0 kPa·s/m or more and less than 85.0 kPa·s/m, the filtration medium includes a filter material A having an airflow resistance per unit basis weight of 0.01 kPa·s·m/g or more and less than 0.04 kPa·s·m/g and a filter material B having an airflow resistance per unit basis weight of 0.04 kPa·s·m/g or more, at least a part of the filter material A is disposed on a side closer to the inlet for a liquid to be processed than the filter material B, and a sum of airflow resistances of the filter material A is 6.0 kPa·s/m or more.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: March 12, 2024
    Assignee: ASAHI KASEI MEDICAL CO., LTD.
    Inventors: Kazuhiko Nakamura, Tomohisa Yokomizo, Takako Kai
  • BLOOD PROCESSING FILTER AND METHOD FOR PRODUCING BLOOD PROCESSING FILTER
    Publication number: 20210316049
    Abstract: A blood processing filter includes a container having 2 ports respectively functioning as an inlet for a liquid to be processed and as an outlet for the processed liquid, and a filtration medium filled in the container, wherein an airflow resistance of the filtration medium is 55.0 kPa·s/m or more and less than 85.0 kPa·s/m, the filtration medium includes a filter material A having an airflow resistance per unit basis weight of 0.01 kPa·s·m/g or more and less than 0.04 kPa·s·m/g and a filter material B having an airflow resistance per unit basis weight of 0.04 kPa·s·m/g or more, at least a part of the filter material A is disposed on a side closer to the inlet for a liquid to be processed than the filter material B, and a sum of airflow resistances of the filter material A is 6.0 kPa·s/m or more.
    Type: Application
    Filed: August 29, 2019
    Publication date: October 14, 2021
    Applicant: ASAHI KASEI MEDICAL CO., LTD.
    Inventors: Kazuhiko NAKAMURA, Tomohisa YOKOMIZO, Takako KAI
  • Filter element for blood processing filter and blood processing filter
    Patent number: 10814051
    Abstract: The present invention provides a filter element for a blood processing filter, comprising a nonwoven fabric, wherein the quantity of crystallization heat of the uncrystallized portion of the nonwoven fabric is 5 J/g or smaller before steam heat treatment.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: October 27, 2020
    Assignee: ASAHI KASEI MEDICAL CO., LTD.
    Inventors: Nobukazu Shimada, Takako Kai
  • FILTER ELEMENT FOR BLOOD PROCESSING FILTER AND BLOOD PROCESSING FILTER
    Publication number: 20180154053
    Abstract: The present invention provides a filter element for a blood processing filter, comprising a nonwoven fabric, wherein the quantity of crystallization heat of the uncrystallized portion of the nonwoven fabric is 5 J/g or smaller before steam heat treatment.
    Type: Application
    Filed: June 17, 2016
    Publication date: June 7, 2018
    Applicant: ASAHI KASEI MEDICAL CO., LTD.
    Inventors: Nobukazu SHIMADA, Takako KAI