Patents by Inventor Yukiko KATAYAMA

Yukiko KATAYAMA 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).

  • Optical component comprising liquid crystals in a blue phase and process for making such optical component
    Patent number: 11231608
    Abstract: An optical component including a first layer, a second layer and a bulk sandwiched between the first and second layers, where the bulk is formed by a composition containing a liquid crystal material which is in a blue phase. At least one of the first and second layers has, toward the bulk, an alignment layer. The blue phase of the liquid crystal material exhibits a uniform organization in three directions (Ox, Oy, Oz) in at least 80% of the volume of the bulk, the liquid crystal material being stabilized in the blue phase at least over the temperatures ranging from 10° C. to 35° C.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: January 25, 2022
    Assignees: NIKON CORPORATION, Essilor International
    Inventors: Eva Oton, Fuyuhiko Inoue, Toshiki Nakano, Estelle Netter, Yukiko Katayama
  • OPTICAL COMPONENT COMPRISING LIQUID CRYSTALS IN A BLUE PHASE AND PROCESS FOR MAKING SUCH OPTICAL COMPONENT
    Publication number: 20190250438
    Abstract: The invention relates to an optical component (1) comprising a first layer (10), a second layer (20) and a bulk (50) sandwiched between said first and second layers, wherein —the bulk is formed by a composition comprising a liquid crystal material (55) which is in a blue phase (56), —at least one of the first and second layers has, toward the bulk, an alignment layer (15, 25), and —the blue phase of the liquid crystal material exhibits a uniform organization in three directions (Ox, Oy, Oz) in at least 80% of the volume of the bulk, said liquid crystal material being stabilized in said blue phase at least over the temperatures ranging from 10° C. to 35° C.
    Type: Application
    Filed: November 18, 2016
    Publication date: August 15, 2019
    Applicants: NIKON CORPORATION, Essilor International
    Inventors: Eva OTON, Fuyuhiko INOUE, Toshiki NAKANO, Estelle NETTER, Yukiko KATAYAMA
  • Article having coating on substrate, coating composition, and coating method
    Patent number: 9791598
    Abstract: Provided is a coating technology additionally excellent in, for example, water repellency, oil repellency, and ease of dirt removal. An article having a coating on a substrate, in which the coating contains: (a) a polyhedral oligomeric silsesquioxane; and (b) an acrylate polymer having a structural unit represented by the following general formula (II): where Ra represents a hydrogen atom or a methyl group, Rf represents —CH2—(CF2)q—CF3 or —CH(CF3)2, and q represents an integer of 0 to 8.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: October 17, 2017
    Assignees: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE), NIKON CORPORATION
    Inventor: Yukiko Katayama
  • ARTICLE HAVING COATING ON SUBSTRATE, COATING COMPOSITION, AND COATING METHOD
    Publication number: 20160245960
    Abstract: Provided is a coating technology additionally excellent in, for example, water repellency, oil repellency, and ease of dirt removal. An article having a coating on a substrate, in which the coating contains: (a) a polyhedral oligomeric silsesquioxane; and (b) an acrylate polymer having a structural unit represented by the following general formula (II): where Ra represents a hydrogen atom or a methyl group, Rf represents —CH2—(CF2)q—CF3 or —CH(CF3)2, and q represents an integer of 0 to 8.
    Type: Application
    Filed: April 29, 2016
    Publication date: August 25, 2016
    Applicants: NIKON CORPORATION, ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventor: Yukiko KATAYAMA