Patents by Inventor Hiroya NISHIKAWA

Hiroya NISHIKAWA 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).

  • ULTRA-HIGH-POLARITY CHIRAL LIQUID CRYSTAL MATERIAL, LIQUID CRYSTAL LASER AND PREPARATION METHOD THEREFOR
    Publication number: 20240019746
    Abstract: The present invention discloses an ultra-high-polarity chiral liquid crystal material, a liquid crystal laser and a preparation method therefor. The ultra-high-polarity chiral liquid crystal material has, in a certain temperature range, a high dielectric constant of ?˜104 and a characteristic of extremely-strong second harmonic response 3 to 10 times as much as that of a quartz crystal, and a pitch of the ultra-high-polarity chiral liquid crystal material is adjusted within 0.1 to 1 micrometer according to a doped concentration of the chiral molecule.
    Type: Application
    Filed: October 27, 2021
    Publication date: January 18, 2024
    Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
    Inventors: Satoshi AYA, Mingjun HUANG, Hiroya NISHIKAWA, Jinxing LI, Junichi KOGO, Junchen ZHOU, Xiuhu ZHAO
  • Complex and optical element
    Patent number: 10914987
    Abstract: A complex (10) includes a liquid crystal component (13) and a support (11, 12) of the liquid crystal component (13), in which a lubricating interface derivation region (16) is formed between the liquid crystal component (13) and the support (11, 12). An optical element includes a pair of substrates (11, 12) having electrodes (18, 19) on at least one substrate (11), and a liquid crystal component (13) with which a space between the pair of substrates (11, 12) is filled, in which a lubricating interface derivation region (16) is formed between the pair of substrates (11, 12) and the liquid crystal component (13). It is preferable that the lubricating interface deriving agent (14) is present in the lubricating interface derivation region.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: February 9, 2021
    Assignees: KYOTO UNIVERSITY, KYUSHU UNIVERSITY, NAT'L UNIVERSITY CORPORATION, SHARP KABUSHIKI KAISHA, DIC CORPORATION
    Inventors: Jun Yamamoto, Masumi Yamashita, Waki Sakatsuji, Yoichi Takanishi, Shogo Kato, Hirotsugu Kikuchi, Yasushi Okumura, Hiroki Higuchi, Rijeesh Kizhakidathazhath, Takahito Kanzaki, Yudai Kawashima, Gimpei Machida, Hiroya Nishikawa, Koichi Miyachi, Kiyoshi Minoura, Isa Nishiyama
  • COMPLEX AND OPTICAL ELEMENT
    Publication number: 20200241336
    Abstract: A complex (10) includes a liquid crystal component (13) and a support (11, 12) of the liquid crystal component (13), in which a lubricating interface derivation region (16) is formed between the liquid crystal component (13) and the support (11, 12). An optical element includes a pair of substrates (11, 12) having electrodes (18, 19) on at least one substrate (11), and a liquid crystal component (13) with which a space between the pair of substrates (11, 12) is filled, in which a lubricating interface derivation region (16) is formed between the pair of substrates (11, 12) and the liquid crystal component (13). It is preferable that the lubricating interface deriving agent (14) is present in the lubricating interface derivation region.
    Type: Application
    Filed: August 26, 2016
    Publication date: July 30, 2020
    Applicants: Kyoto University, KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, Sharp Kabushiki Kaisha, DIC Corporation
    Inventors: Jun Yamamoto, Masumi Yamashita, Waki Sakatsuji, Yoichi Takanishi, Shogo Kato, Hirotsugu Kikuchi, Yasushi Okumura, Hiroki Higuchi, Rijeesh Kizhakidathazhath, Takahito Kanzaki, Yudai Kawashima, Gimpei Machida, Hiroya Nishikawa, Koichi Miyachi, Kiyoshi Minoura, Isa Nishiyama
  • Liquid crystal device
    Patent number: 10344212
    Abstract: One aspect is contemplated for providing a device having a liquid crystal material exhibiting a dielectric constant of 1000 or more at a temperature at which a specific liquid crystal phase is developed, and a unit configured to apply voltage to the liquid crystal material at the temperature at which the specific liquid crystal phase is developed.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: July 9, 2019
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Hirotsugu Kikuchi, Yasushi Okumura, Hiroki Higuchi, Hiroya Nishikawa, Kazuya Shiroshita, Shinichi Yamamoto, Koki Sago, Yasuhiro Haseba
  • LIQUID CRYSTAL DEVICE
    Publication number: 20170233653
    Abstract: One aspect is contemplated for providing a device having a liquid crystal material exhibiting a dielectric constant of 1000 or more at a temperature at which a specific liquid crystal phase is developed, and a unit configured to apply voltage to the liquid crystal material at the temperature at which the specific liquid crystal phase is developed.
    Type: Application
    Filed: February 15, 2017
    Publication date: August 17, 2017
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Hirotsugu KIKUCHI, Yasushi OKUMURA, Hiroki HIGUCHI, Hiroya NISHIKAWA, Kazuya SHIROSHITA, Shinichi YAMAMOTO, Koki SAGO, Yasuhiro HASEBA