Patents by Inventor Kento Okoshi

Kento Okoshi 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).

  • Patent number: 8648994
    Abstract: Disclosed are a liquid crystal display element exhibiting a continuous gradation memory property as well as different display properties substantially similar to those of a liquid crystal display element having nematic liquid crystals, while enabling continuous tone display, and a method for manufacturing the same.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: February 11, 2014
    Assignees: LG Display Co., Ltd., Tokyo Institute of Technology
    Inventors: Osamu Sato, Katsuyoshi Hiraki, Isao Adachi, Dong-Uk Cho, Kento Okoshi, Masatoshi Tokita, Junji Watanabe
  • Publication number: 20110181821
    Abstract: Disclosed are a liquid crystal display element exhibiting a continuous gradation memory property as well as different display properties substantially similar to those of a liquid crystal display element having nematic liquid crystals, while enabling continuous tone display, and a method for manufacturing the same.
    Type: Application
    Filed: December 30, 2010
    Publication date: July 28, 2011
    Applicants: LG Display Co., Ltd., Tokyo Institute of Technology
    Inventors: Osamu SATO, Katsuyoshi Hiraki, Isao Adachi, Dong-Uk Cho, Kento Okoshi, Masatoshi Tokita, Junji Watanabe
  • Patent number: 7691291
    Abstract: Novel optically active polyacetylene derivatives exhibiting liquid crystallinity; liquid crystal compositions containing the derivatives; and moldings thereof. Specifically, polyacetylene derivatives which have helical structure of rigid-rod shape and which exhibit a liquid crystal phase either in a solvent containing an organic solvent as the main component or in a molten state as well as electric field orientation; liquid crystal compositions containing the derivatives; and moldings thereof.
    Type: Grant
    Filed: August 26, 2005
    Date of Patent: April 6, 2010
    Assignee: Japan Science and Technology Agency
    Inventors: Kento Okoshi, Eiji Yashima
  • Patent number: 7619109
    Abstract: Disclosed are: a method for production of a polyisocyanide derivative having a stable helical main chain structure with a right-handed or left-handed helix or a mixture thereof from a single type of monomer by polymerizing an aromatic isocyanate having a substituent harboring a structure —CONH in the aromatic ring and a hydrophobic moiety having 6 or more carbon atoms in a polymerization solvent, wherein the direction of the helix depends on the polarity of the polymerization solvent; a poly(aromatic isocyanide) derivative produced by the method; and an aromatic isocyanide which is useful as a monomer for use in the production of the poly(aromatic isocyanide) derivative.
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: November 17, 2009
    Assignee: Japan Science and Technology Agency
    Inventors: Kento Okoshi, Eiji Yashima, Hisanari Onouchi, Shin-Ichiro Sakurai, Takashi Kajitani
  • Publication number: 20090030227
    Abstract: The object is to provide: a method for producing a polymer having a stable right-handed or left-handed helical structure from a single type of monomer in a per-selective manner and controlling the proportion between a polymer having the right-handed helical structure and a polymer having the left-handed helical structure; and a polymeric material which can be used for the formation of any of the right-handed and left-handed helical structures.
    Type: Application
    Filed: December 1, 2006
    Publication date: January 29, 2009
    Applicant: Japan Science and Technology Agency
    Inventors: Kento Okoshi, Eiji Yashima, Hisanari Onouchi, Shin-ichiro Sakurai, Takashi Kajitani
  • Patent number: 7381349
    Abstract: A process to produce a polymer liquid crystalline composition having temperature dependency of desired circular polarization selective reflection wave length property by only mixing two or more kinds of starting materials having different weight-average molecular weight comprising, mixing two or more kinds of rigid rodlike helical polymers with chiral side chains having different weight-average molecular weight synthesized from same molecules and having same repeating unit whose molecular weight distribution defined by the ratio of weight average molecular weight/number average molecular weight is from 1.00 to 1.25, and controlling weight average molecular weight, number average molecular weight and molecular weight distribution by mixing ratio.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: June 3, 2008
    Assignee: Japan Science and Technology Agency
    Inventors: Michiya Fujiki, Junji Watanabe, Kento Okoshi
  • Publication number: 20070260028
    Abstract: Novel optically active polyacetylene derivatives exhibiting liquid crystallinity; liquid crystal compositions containing the derivatives; and moldings thereof. Specifically, polyacetylene derivatives which have helical structure of rigid-rod shape and which exhibit a liquid crystal phase either in a solvent containing an organic solvent as the main component or in a molten state as well as electric field orientation; liquid crystal compositions containing the derivatives; and moldings thereof.
    Type: Application
    Filed: August 26, 2005
    Publication date: November 8, 2007
    Applicant: Japn Science and Technology Agency
    Inventors: Kento Okoshi, Eiji Yashima
  • Publication number: 20050224752
    Abstract: A process to produce a polymer liquid crystalline composition having temperature dependency of desired circular polarization selective reflection wave length property by only mixing two or more kinds of starting materials having different weight-average molecular weight comprising, mixing two or more kinds of rigid rodlike helical polymers with chiral side chains having different weight-average molecular weight synthesized from same molecules and having same repeating unit whose molecular weight distribution defined by the ratio of weight average molecular weight/number average molecular weight is from 1.00 to 1.25, and controlling weight average molecular weight, number average molecular weight and molecular weight distribution by mixing ratio.
    Type: Application
    Filed: April 14, 2003
    Publication date: October 13, 2005
    Inventors: Michiya Fujiki, Junji Watanabe, Kento Okoshi
  • Patent number: 6252624
    Abstract: A three-dimensional display is provided with a display device alternatively displaying an image for the right eye and an image for the left eye in division of the images at predetermined time periods. A liquid crystal shutter disposed in front of the display device is operated in synchronization with image switching of the display device, and the image transmitted through the liquid crystal shutter is observed as a three-dimensional image through polarized glasses of which polarizing directions differ in the right and left from each other. The liquid crystal cell which serves as a liquid crystal shutter has a structure of a ferroelectric liquid crystal held between two sheets of resin film substrates and the ferroelectric liquid crystal contains more than 10 wt % of ferroelectric liquid crystal polymer so that it can respond to a large size display device and a high speed motion.
    Type: Grant
    Filed: March 12, 1998
    Date of Patent: June 26, 2001
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Kimihiro Yuasa, Kento Okoshi, Hirofumi Kondo, Hironobu Ichige, Takeki Kofuji