Patents by Inventor Naoki Murai

Naoki Murai 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: 20240101730
    Abstract: A sliding member is formed of a polytetrafluoroethylene resin. The polytetrafluoroethylene resin contains 2.4 wt % or more and 15.6 wt % or less magnesium phosphate, 7.6 wt % or more and 19.9 wt % or less barium sulfate, 0 wt % or more and 10.0 wt % or less molybdenum disulfide, and 8.3 wt % or more and 15.7 wt % or less fired clay.
    Type: Application
    Filed: September 20, 2023
    Publication date: March 28, 2024
    Applicant: TAIHO KOGYO CO., LTD.
    Inventors: Masaki MURAI, Masaya TOKORO, Naoki HORIBE
  • Patent number: 11491116
    Abstract: An adhesive patch comprising: a support; at least a pressure-sensitive adhesive layer provided on the support; and a release liner attached on the pressure-sensitive adhesive layer so as to cover the surface of the pressure-sensitive adhesive layer, in which the support is a 3D patterned sheet characterized in that a plurality of protruded lines and recessed lines parallelly and linearly extending are formed inside and outside lines in a plurality of figures partitioned by the lines, walls of the protruded lines and recessed lines in some of the figures are formed to be inclined by different inclination angles with respect to a base part, and the protruded lines have different heights from the base part, serving as physical parameters of the protruded lines and recessed lines, toward a predetermined direction in the sheet.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: November 8, 2022
    Assignee: LEAD CHEMICAL CO., LTD.
    Inventors: Takayasu Matsuzawa, Seijiro Yama, Naoki Murai
  • Publication number: 20190046464
    Abstract: An adhesive patch comprising: a support; at least a pressure-sensitive adhesive layer provided on the support; and a release liner attached on the pressure-sensitive adhesive layer so as to cover the surface of the pressure-sensitive adhesive layer, in which the support is a 3D patterned sheet characterized in that a plurality of protruded lines and recessed lines parallelly and linearly extending are formed inside and outside lines in a plurality of figures partitioned by the lines, walls of the protruded lines and recessed lines in some of the figures are formed to be inclined by different inclination angles with respect to a base part, and the protruded lines have different heights from the base part, serving as physical parameters of the protruded lines and recessed lines, toward a predetermined direction in the sheet.
    Type: Application
    Filed: March 16, 2016
    Publication date: February 14, 2019
    Applicant: LEAD CHEMICAL CO., LTD.
    Inventors: Takayasu MATSUZAWA, Seijiro YAMA, Naoki MURAI
  • Patent number: 9132100
    Abstract: The present invention is directed to a patch containing a non-steroidal anti-inflammatory drug including an adhesive layer composed of a transdermal preparation on a support, the transdermal preparation including a) 10 to 40% by weight of a nonaqueous base material based on the total weight of the transdermal preparation, b) 1 to 10% by weight of a non-steroidal anti-inflammatory drug based on the total weight of the transdermal preparation, and c) a polyethylene glycol component composed of 0.3 to 5% by weight of a low molecular weight polyethylene glycol based on the total weight of the transdermal preparation, and 1 to 10% by weight of a high molecular weight polyethylene glycol based on the total weight of the transdermal preparation.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: September 15, 2015
    Assignee: Reckitt Benckiser Healthcare International Limited
    Inventors: Naoki Murai, Seijiro Yama
  • Publication number: 20140335151
    Abstract: The present invention is directed to a patch containing a non-steroidal anti-inflammatory drug including an adhesive layer composed of a transdermal preparation on a support, the transdermal preparation including a) 10 to 40% by weight of a non-aqueous base material based on the total weight of the transdermal preparation, b) 1 to 10% by weight of a non-steroidal anti-inflammatory drug based on the total weight of the transdermal preparation, and c) a polyethylene glycol component composed of 0.3 to 5% by weight of a low molecular weight polyethylene glycol based on the total weight of the transdermal preparation, and 1 to 10% by weight of a high molecular weight polyethylene glycol based on the total weight of the transdermal preparation.
    Type: Application
    Filed: December 4, 2012
    Publication date: November 13, 2014
    Inventors: Naoki Murai, Seijiro Yama
  • Patent number: 8551979
    Abstract: The present invention relates to nonaqueous preparation for percutaneous absorption prepared by laminating an adhesive layer comprising a nonsteroidal anti-inflammatory analgesic in an alkali metal salt form, and an inorganic acid which is strongly acidic compared with the nonsteroidal anti-inflammatory analgesic in a free form, together with a nonaqueous base, on a support. According to the present invention, drug-releasing characteristics and skin penetration in a nonaqueous preparation for percutaneous absorption can be improved because the addition of an inorganic acid in a nonaqueous base containing a drug in an alkali metal salt form leads to an improvement in the solubility of the drug in the base, and a good partitioning of the drug to skin surface. In addition, as the inorganic acid has no alcoholic hydroxy group in the structure, the inorganic acid does not react with the drug, therefore it causes no lowering in the stability of the drug by esterification.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: October 8, 2013
    Assignee: Lead Chemical Co., Ltd.
    Inventors: Seijirou Yama, Naoki Murai
  • Publication number: 20080113010
    Abstract: The present invention relates to nonaqueous preparation for percutaneous absorption prepared by laminating an adhesive layer comprising a nonsteroidal anti-inflammatory analgesic in an alkali metal salt form, and an inorganic acid which is strongly acidic compared with the nonsteroidal anti-inflammatory analgesic in a free form, together with a nonaqueous base, on a support. According to the present invention, drug-releasing characteristics and skin penetration in a nonaqueous preparation for percutaneous absorption can be improved because the addition of an inorganic acid in a nonaqueous base containing a drug in an alkali metal salt form leads to an improvement in the solubility of the drug in the base, and a good partitioning of the drug to skin surface. In addition, as the inorganic acid has no alcoholic hydroxy group in the structure, the inorganic acid does not react with the drug, therefore it causes no lowering in the stability of the drug by esterification.
    Type: Application
    Filed: November 5, 2004
    Publication date: May 15, 2008
    Applicant: LEAD CHEMICAL CO., LTD.
    Inventors: Seijirou Yama, Naoki Murai