Patents by Inventor Kazuki Kurisawa

Kazuki Kurisawa 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: 20140293213
    Abstract: A liquid crystal composition containing a polymerizable compound of the present invention has excellent characteristics of being able to prepare a PSA type liquid crystal display element with no problem of depositing in a wide temperature range, having high polymerization speed, high liquid crystal alignment regulation force after polymerization, excellent display qualities with no display unevenness or the like, and excellent display characteristics with no defects in display characteristics such as image sticking and is appropriate as a liquid crystal composition in a practical use. Further, the liquid crystal display element with the above-described liquid crystal composition can be appropriately used for a PSA type liquid crystal display element.
    Type: Application
    Filed: August 10, 2012
    Publication date: October 2, 2014
    Applicant: DIC CORPORATION
    Inventors: Kazuki Kurisawa, Takeshi Kuriyama, Shotaro Kawakami
  • Patent number: 8765013
    Abstract: A polymerizable compound-containing liquid crystal composition includes at least one of compounds represented by general formulae (I) to (IV). A liquid crystal display device uses the liquid crystal composition.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: July 1, 2014
    Assignee: DIC Corporation
    Inventors: Kazuki Kurisawa, Takeshi Kuriyama, Shotaro Kawakami
  • Patent number: 8647530
    Abstract: A liquid crystal composition containing a polymerizable compound contains one or two or more polymerizable compounds having the general formula (I) as a first component and one or two or more non-polymerizable liquid crystal compounds having an alkenyl group as a second component. A liquid crystal display element is manufactured using the liquid crystal composition.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: February 11, 2014
    Assignee: DIC Corporation
    Inventors: Takeshi Kuriyama, Kazuki Kurisawa, Shotaro Kawakami
  • Patent number: 8460576
    Abstract: Provided are a liquid crystal composition containing, as a first component, a polymerizable compound represented by general formula (I): and a liquid crystal display element using the liquid crystal composition.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: June 11, 2013
    Assignee: DIC Corporation
    Inventors: Kazuki Kurisawa, Takeshi Kuriyama, Shotaro Kawakami
  • Publication number: 20120292569
    Abstract: A polymerizable compound-containing liquid crystal composition includes at least one of compounds represented by general formulae (I) to (IV). A liquid crystal display device uses the liquid crystal composition.
    Type: Application
    Filed: May 18, 2012
    Publication date: November 22, 2012
    Applicant: DIC CORPORATION
    Inventors: Kazuki Kurisawa, Takeshi Kuriyama, Shotaro Kawakami
  • Publication number: 20120292568
    Abstract: A liquid crystal composition containing a polymerizable compound contains one or two or more polymerizable compounds having the general formula (I) as a first component and one or two or more non-polymerizable liquid crystal compounds having an alkenyl group as a second component. A liquid crystal display element is manufactured using the liquid crystal composition.
    Type: Application
    Filed: May 18, 2012
    Publication date: November 22, 2012
    Applicant: DIC CORPORATION
    Inventors: Takeshi Kuriyama, Kazuki Kurisawa, Shotaro Kawakami
  • Patent number: 8202447
    Abstract: The present invention provides a method for producing a liquid crystal composition which mixes two or more liquid crystal compounds, namely, a method for producing a liquid crystal composition, including conducting agitation or ultrasonic irradiation of two or more liquid crystal compounds without applying external heat, wherein at least one of the liquid crystal compounds has a melting point higher than 40° C., and a temperature at a start of the agitation or ultrasonic irradiation is not more than 40° C. The production method of the present invention enables a highly reliable, high-quality liquid crystal composition to be produced without the necessity for large-scale equipment such as a pressure reduction apparatus or heating apparatus. Accordingly, this method is extremely practical for the production of liquid crystal compositions that require a high level of reliability.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: June 19, 2012
    Assignee: DIC Corporation
    Inventors: Kazuki Kurisawa, Kunihiko Kotani
  • Publication number: 20110253936
    Abstract: Provided are a liquid crystal composition containing, as a first component, a polymerizable compound represented by general formula (I): and a liquid crystal display element using the liquid crystal composition.
    Type: Application
    Filed: April 15, 2011
    Publication date: October 20, 2011
    Applicant: DIC Corporation
    Inventors: Kazuki KURISAWA, Takeshi KURIYAMA, Shotaro KAWAKAMI
  • Publication number: 20100012896
    Abstract: The present invention provides a method for producing a liquid crystal composition which mixes two or more liquid crystal compounds, namely, a method for producing a liquid crystal composition, including conducting agitation or ultrasonic irradiation of two or more liquid crystal compounds without applying external heat, wherein at least one of the liquid crystal compounds has a melting point higher than 40° C., and a temperature at a start of the agitation or ultrasonic irradiation is not more than 40° C. The production method of the present invention enables a highly reliable, high-quality liquid crystal composition to be produced without the necessity for large-scale equipment such as a pressure reduction apparatus or heating apparatus. Accordingly, this method is extremely practical for the production of liquid crystal compositions that require a high level of reliability.
    Type: Application
    Filed: March 17, 2008
    Publication date: January 21, 2010
    Applicant: DIC Corporation
    Inventors: Kazuki Kurisawa, Kunihiko Kotani