Patents by Inventor Kimiko Iwahashi

Kimiko Iwahashi 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).

  • Method for producing gas separation composite membrane, liquid composition, gas separation composite membrane, gas separation module, gas separation apparatus, and gas separation method
    Patent number: 10654005
    Abstract: The method for producing a gas separation composite membrane includes applying a mixed liquid containing compounds (a) and (b) below onto a porous support to form a coating film and curing the coating film to form a crosslinked polysiloxane compound layer: (a) a particular crosslinkable polysiloxane compound having a structural unit (a1), a structural unit (a2), and a structural unit (a3) or (a4), and (b) a particular crosslinkable polysiloxane compound having a structural unit (b1), a structural unit (b2), and a structural unit (b3) or (b4), where R1a to R1f and R2a to R2f represent a particular group and * represents a particular linking site.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: May 19, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Keisuke Kodama, Akihiro Sugita, Kimiko Iwahashi
  • Gas separation membranes with intermixed layers
    Patent number: 10005043
    Abstract: A composite membrane comprising: a) a porous support; b) a gutter layer; and c) a discriminating layer; wherein at least 10% of the discriminating layer is intermixed with the gutter layer.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: June 26, 2018
    Assignee: Fujifilm Manufacturing Europe B.V.
    Inventors: Takeshi Umehara, Masatoshi Nakanishi, Yujiro Itami, Hiroyuki Noda, Akihiro Kurima, Kimiko Iwahashi
  • METHOD FOR PRODUCING GAS SEPARATION COMPOSITE MEMBRANE, LIQUID COMPOSITION, GAS SEPARATION COMPOSITE MEMBRANE, GAS SEPARATION MODULE, GAS SEPARATION APPARATUS, AND GAS SEPARATION METHOD
    Publication number: 20180147546
    Abstract: The method for producing a gas separation composite membrane includes applying a mixed liquid containing compounds (a) and (b) below onto a porous support to form a coating film and curing the coating film to form a crosslinked polysiloxane compound layer: (a) a particular crosslinkable polysiloxane compound having a structural unit (a1), a structural unit (a2), and a structural unit (a3) or (a4), and (b) a particular crosslinkable polysiloxane compound having a structural unit (b1), a structural unit (b2), and a structural unit (b3) or (b4), where R1a to R1f and R2a to R2f represent a particular group and * represents a particular linking site.
    Type: Application
    Filed: January 25, 2018
    Publication date: May 31, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Keisuke Kodama, Akihiro Sugita, Kimiko Iwahashi
  • Gas Separation Membranes with Intermixed Layers
    Publication number: 20170296981
    Abstract: A composite membrane comprising: a) a porous support; b) a gutter layer; and c) a discriminating layer; wherein at least 10% of the discriminating layer is intermixed with the gutter layer.
    Type: Application
    Filed: July 6, 2017
    Publication date: October 19, 2017
    Inventors: Takeshi Umehara, Masatoshi Nakanishi, Yujiro Itami, Hiroyuki Noda, Akihiro Kurima, Kimiko Iwahashi
  • Gas separation membranes with intermixed layers
    Patent number: 9731248
    Abstract: A composite membrane comprising: a) a porous support; b) a gutter layer; and c) a discriminating layer; wherein at least 10% of the discriminating layer is intermixed with the gutter layer.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: August 15, 2017
    Assignee: Fujifilm Manufacturing Europe B.V.
    Inventors: Takeshi Umehara, Masatoshi Nakanishi, Yujiro Itami, Hiroyuki Noda, Akihiro Kurima, Kimiko Iwahashi
  • Curable compositions and membranes
    Patent number: 9700848
    Abstract: A composite membrane comprising: a) a porous support; b) a gutter layer, a portion of which is present within the support and a portion of which is outside of the support; and c) a discriminating layer on the gutter layer; wherein: (i) the portion of the gutter layer outside of the support has an average thickness (GLe) of 10 nm to 900 nm; and (ii) the portion of the gutter layer present within the support has an average thickness (GLi) of 10% to 350% of GLe.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: July 11, 2017
    Assignee: Fujifilm Manufacturing Europe B.V.
    Inventors: Takeshi Umehara, Shigehide Itoh, Petrus Van Kessel, Yujiro Itami, Masatoshi Nakanishi, Hiroyuki Noda, Akihiro Kurima, Kimiko Iwahashi
  • Curable Compositions and Membranes
    Publication number: 20150343389
    Abstract: A composite membrane comprising: a) a porous support; b) a gutter layer, a portion of which is present within the support and a portion of which is outside of the support; and c) a discriminating layer on the gutter layer; wherein: (i) the portion of the gutter layer outside of the support has an average thickness (GLe) of 10 nm to 900 nm; and (ii) the portion of the gutter layer present within the support has an average thickness (GLi) of 10% to 350% of GLe.
    Type: Application
    Filed: June 26, 2013
    Publication date: December 3, 2015
    Inventors: Takeshi UMEHARA, Shigehide ITOH, Petrus VAN KESSEL, Yujiro ITAMI, Masatoshi NAKANISHI, Hiroyuki NODA, Akihiro KURIMA, Kimiko IWAHASHI
  • Gas Separation Membranes with intermixed Layers
    Publication number: 20150143995
    Abstract: A composite membrane comprising: a) a porous support; b) a gutter layer; and c) a discriminating layer; wherein at least 10% of the discriminating layer is intermixed with the gutter layer.
    Type: Application
    Filed: June 26, 2013
    Publication date: May 28, 2015
    Inventors: Takeshi Umehara, Masatoshi Nakanishi, Yujiro Itami, Hiroyuki Noda, Akihiro Kurima, Kimiko Iwahashi