Patents by Inventor Takasi Nisisako

Takasi Nisisako 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: 20230142172
    Abstract: A microdroplet/bubble-generating device comprising a slit and a row of a plurality of microflow paths is constructed, in such a manner that either a continuous phase or dispersion phase is supplied to the slit, and so that the end of the slit, the other supply port for the continuous phase or dispersion phase and the liquid recovery port are connected. The plurality of microflow paths each have a narrow part where the cross-sectional area of the flow channel is locally narrowed adjacent to or near the connection point between the slit and the microflow path. The continuous phase and dispersion phase that have met at the connection points flow into the narrow parts, and the dispersion phase is sheared at the narrow parts with the continuous phase flow as the driving force, forming droplets or gas bubbles of the dispersion phase. The product is recovered from the liquid recovery port.
    Type: Application
    Filed: March 12, 2021
    Publication date: May 11, 2023
    Applicant: Japan Science and Technology Agency
    Inventor: Takasi NISISAKO
  • Publication number: 20210001340
    Abstract: The invention provides a microdroplet- or bubble-producing device that does not require separate through-holes for different liquid droplet/air bubble-producing flow channels. The droplet-producing flow channels are configured in a three-dimensional manner unlike in a conventional device where they are configured in a two-dimensional plane, and therefore the flow channels can be provided in a more high-density configuration than the prior art.
    Type: Application
    Filed: February 28, 2019
    Publication date: January 7, 2021
    Applicant: Tokyo Institute of Technology
    Inventors: Takasi NISISAKO, Naotomo TOTTORI
  • Patent number: 9200938
    Abstract: The present invention provides an apparatus for producing micro liquid drops through fine channels which can produce a large amount of micro liquid drops at low costs in an efficient manner. The apparatus for producing micro liquid drops according to the present invention includes a fine channel substrate and a holder for holding the fine channel substrate.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: December 1, 2015
    Assignee: Toyota Institute of Technology
    Inventor: Takasi Nisisako
  • Patent number: 8961898
    Abstract: The present invention provides a bilayer membrane produced using a microchannel capable of easily forming bilayer membranes such as planar lipid bilayer membranes in large quantities, and a production method thereof. A process for producing a bilayer membrane of the present invention comprises forming a state where two liquid phases or liquid and gaseous phases each containing amphipathic molecules are alternately arranged in a microchannel, discharging one of the two liquid phases or the gaseous phase of the liquid and gaseous phases through branch minichannels formed in the wall on one side or in the walls on both sides to contact the remaining liquid phases adjacent to each other, and thereby forming a side-by-side arrangement of bilayer membranes comprising the amphipathic molecules.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: February 24, 2015
    Assignee: Tokyo Institute of Technology
    Inventors: Takasi Nisisako, Takahiro Baba
  • Publication number: 20130129581
    Abstract: [Name of the Document] The present invention provides an apparatus for producing micro liquid drops through fine channels which can produce a large amount of micro liquid drops at low costs in an efficient manner. The apparatus for producing micro liquid drops according to the present invention includes a fine channel substrate and a holder for holding the fine channel substrate.
    Type: Application
    Filed: July 13, 2011
    Publication date: May 23, 2013
    Inventor: Takasi Nisisako
  • Publication number: 20100148123
    Abstract: The present invention provides a bilayer membrane produced using a microchannel capable of easily forming bilayer membranes such as planar lipid bilayer membranes in large quantities, and a production method thereof. A process for producing a bilayer membrane of the present invention comprises forming a state where two liquid phases or liquid and gaseous phases each containing amphipathic molecules are alternately arranged in a microchannel, discharging one of the two liquid phases or the gaseous phase of the liquid and gaseous phases through branch minichannels formed in the wall on one side or in the walls on both sides to contact the remaining liquid phases adjacent to each other, and thereby forming a side-by-side arrangement of bilayer membranes comprising the amphipathic molecules.
    Type: Application
    Filed: March 28, 2008
    Publication date: June 17, 2010
    Applicant: Tokyo Institute of Technology
    Inventors: Takasi Nisisako, Takahiro Baba
  • Patent number: 7378473
    Abstract: Monodisperse colored spherical particles each having two separated color regions of two hues, that is, two-colored spherical particles, useful, for example, for displays of characters, graphics, images and the like, the two hues being for reverse display in terms of electricity and magnetism from the viewpoint of good suitability for display are provided. In the production process and the apparatus for producing the colored spherical polymer particles, microchannels are utilized including a first microchannel through which a colored continuous phase comprising a color dye/pigment dispersed in a fluid dispersing medium containing a polymerizable resin component and having colored phases of different hues is transferred, and a second microchannel through which a spheroidizing disperse phase flows.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: May 27, 2008
    Assignees: Soken Chemical & Engineering Co., Ltd.
    Inventors: Toru Torii, Toshiro Higuchi, Takasi Nisisako, Youichi Takizawa, Takanori Takahashi
  • Publication number: 20060014894
    Abstract: Monodisperse colored spherical particles each having two separated color regions of two hues, that is, two-colored spherical particles, useful, for example, for displays of characters, graphics, images and the like, the two hues being for reverse display in terms of electricity and magnetism from the viewpoint of good suitability for display are provided. In the production process and the apparatus for producing the colored spherical polymer particles, microchannels are utilized including a first microchannel through which a colored continuous phase comprising a color dye/pigment dispersed in a fluid dispersing medium containing a polymerizable resin component and having colored phases of different hues is transferred, and a second microchannel through which a spheroidizing disperse phase flows.
    Type: Application
    Filed: December 5, 2003
    Publication date: January 19, 2006
    Applicants: Soken Chemical & Engineering Co., Ltd.
    Inventors: Toru Torii, Toshiro Higuchi, Takasi Nisisako, Youichi Takizawa, Takanori Takahashi