Patents by Inventor Takahiro Tada

Takahiro Tada 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: 11376262
    Abstract: A method of treating an inflammatory or infectious disease includes administering an effective amount of pharmaceutical composition to a subject in need of treatment of the inflammatory or infectious disease. The composition includes an aqueous suspension of nanoparticles of a glucocorticosteroid compound.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: July 5, 2022
    Assignee: ACTIVUS PHARMA CO., LTD.
    Inventors: Takahiro Tada, Kazuhiro Kagami, Kenta Kikuchi
  • Patent number: 10792248
    Abstract: An aqueous suspension preparation that comprises a macrolide antibacterial agent as an active component. The aqueous suspension preparation is characterized by comprising nanoparticles of a macrolide antibacterial agent and a dispersion stabilizer; an aqueous suspension in which the average particle size of nanoparticles is 500 nm or less and the D90 particle size is 1,500 nm or less; a parenterally administered pharmaceutical composition that comprises this aqueous suspension preparation; an injection preparation; and eye drops or ear drops, more specifically, eye drops for the treatment or prevention of inflammatory diseases of the eye or ear drops for the treatment or prevention of inflammatory diseases of the ear.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: October 6, 2020
    Assignee: ACTIVUS PHARMA CO., LTD.
    Inventors: Takahiro Tada, Kazuhiro Kagami, Shiro Yokota, Kenta Kikuchi
  • Publication number: 20200129526
    Abstract: A method of treating an inflammatory or infectious disease includes administering an effective amount of pharmaceutical composition to a subject in need of treatment of the inflammatory or infectious disease. The composition includes an aqueous suspension of nanoparticles of a glucocorticosteroid compound.
    Type: Application
    Filed: December 31, 2019
    Publication date: April 30, 2020
    Inventors: Takahiro TADA, Kazuhiro KAGAMI, Shiro YOKOTA, Kenta KIKUCHI
  • Patent number: 10588913
    Abstract: An aqueous suspension containing as an active component a glucocorticosteroid compound is described. The aqueous suspension contains nanoparticles of a glucocorticosteroid compound and a dispersion stabilizer. The nanoparticles have a mean particle diameter of 300 nm or less and a D90 particle diameter of 450 nm or less. The pharmaceutical compositions containing the aqueous suspension are for parenteral administrations, injections, eye drops or ear drops. More specifically the aqueous suspensions containing glucocorticosteroid nanoparticles are used as an eye drop for treating or preventing inflammatory diseases of the eye or an ear drop for treating or preventing inflammatory diseases of the ear.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: March 17, 2020
    Assignee: Activus Pharma Co., Ltd.
    Inventors: Takahiro Tada, Kazuhiro Kagami, Kenta Kikuchi
  • Publication number: 20180117064
    Abstract: An aqueous suspension containing as an active component a glucocorticosteroid compound is described. The aqueous suspension contains nanoparticles of a glucocorticosteroid compound and a dispersion stabilizer. The nanoparticles have a mean particle diameter of 300 nm or less and a D90 particle diameter of 450 nm or less. The pharmaceutical compositions containing the aqueous suspension are for parenteral administrations, injections, eye drops or ear drops. More specifically the aqueous suspensions containing glucocorticosteroid nanoparticles are used as an eye drop for treating or preventing inflammatory diseases of the eye or an ear drop for treating or preventing inflammatory diseases of the ear.
    Type: Application
    Filed: May 9, 2016
    Publication date: May 3, 2018
    Inventors: Takahiro Tada, Kazuhiro Kagami, Kenta Kikuchi
  • Patent number: 9782484
    Abstract: The purpose of present invention is to provide a medicine which has low contamination with a fine-pulverizing medium, is safe and has improved bioavailability. A method for producing a composite organic compound powder for medical use is used which comprises: mixing a poorly water-soluble and crystalline organic compound powder, a physiologically acceptable salt, a physiologically acceptable polyol, and a carboxyvinyl polymer and fine-pulverizing the organic compound powder; and removing at least the salt and the polyol during or after fine-pulverizing.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: October 10, 2017
    Assignee: ACTIVUS PHARMA CO., LTD.
    Inventors: Takashi Hirokawa, Takahiro Tada, Jun Nihira
  • Publication number: 20160271057
    Abstract: An aqueous suspension preparation that comprises a macrolide antibacterial agent as an active component. The aqueous suspension preparation is characterized by comprising nanoparticles of a macrolide antibacterial agent and a dispersion stabilizer; an aqueous suspension in which the average particle size of nanoparticles is 500 nm or less and the D90 particle size is 1,500 nm or less; a parenterally administered pharmaceutical composition that comprises this aqueous suspension preparation; an injection preparation; and eye drops or ear drops, more specifically, eye drops for the treatment or prevention of inflammatory diseases of the eye or ear drops for the treatment or prevention of inflammatory diseases of the ear.
    Type: Application
    Filed: November 7, 2014
    Publication date: September 22, 2016
    Inventors: Takahiro TADA, Kazuhiro KAGAMI, Shiro YOKOTA, Kenta KIKUCHI
  • Patent number: 9278071
    Abstract: An organic compound nano-powder comprising a granular organic compound with an average particle diameter of 500 nm or less and a 90%-diameter of less than 1500 nm and a carbohydrate compound comprising at least any one of a sugar and a sugar alcohol and with amount of 0.3 times or more by mass relative to amount of the organic compound, a method for producing the same, and a suspension having the organic compound dispersed in a liquid dispersion medium in which the organic compound is insoluble or poorly soluble.
    Type: Grant
    Filed: May 11, 2013
    Date of Patent: March 8, 2016
    Assignee: ACTIVUS PHARMA CO., LTD.
    Inventors: Takahiro Tada, Kazuhiro Kagami, Shiro Yokota
  • Publication number: 20140328917
    Abstract: An organic compound nano-powder comprising a granular organic compound with an average particle diameter of 500 nm or less and a 90%-diameter of less than 1500 nm and a carbohydrate compound comprising at least any one of a sugar and a sugar alcohol and with amount of 0.3 times or more by mass relative to amount of the organic compound, a method for producing the same, and a suspension having the organic compound dispersed in a liquid dispersion medium in which the organic compound is insoluble or poorly soluble.
    Type: Application
    Filed: May 11, 2013
    Publication date: November 6, 2014
    Inventors: Takahiro Tada, Kazuhiro Kagami, Shiro Yokota
  • Publication number: 20140038931
    Abstract: The purpose of present invention is to provide a medicine which has low contamination with a fine-pulverizing medium, is safe and has improved bioavailability. A method for producing a composite organic compound powder for medical use is used which comprises: mixing a poorly water-soluble and crystalline organic compound powder, a physiologically acceptable salt, a physiologically acceptable polyol, and a carboxyvinyl polymer and fine-pulverizing the organic compound powder; and removing at least the salt and the polyol during or after fine-pulverizing.
    Type: Application
    Filed: August 27, 2013
    Publication date: February 6, 2014
    Applicant: ACTIVUS PHARMA CO., LTD.
    Inventors: Takashi HIROKAWA, Takahiro TADA, Jun NIHIRA
  • Publication number: 20120237768
    Abstract: Disclosed is a method for producing pulverized particles of a crystalline organic compound which is poorly water-soluble. Also disclosed is a pulverized organic compound particle produced by such a method. Specifically disclosed is a method for producing a poor water solubility organic compound particle for medical use, which is characterized in that a poor water solubility organic compound for medical use is mixed with a physiologically acceptable salt and a physiologically acceptable polyol, and subjected to wet milling. Also specifically disclosed is a poor water solubility organic compound particle for medical use, which is produced by such a production method.
    Type: Application
    Filed: May 31, 2012
    Publication date: September 20, 2012
    Applicant: Activus Pharma Co., Ltd.
    Inventors: Takashi HIROKAWA, Takahiro Tada
  • Patent number: 8226983
    Abstract: Disclosed is a method for producing pulverized particles of a crystalline organic compound which is poorly water-soluble. Also disclosed is a pulverized organic compound particle produced by such a method. Specifically disclosed is a method for producing a poor water solubility organic compound particle for medical use, which is characterized in that a poor water solubility organic compound for medical use is mixed with a physiologically acceptable salt and a physiologically acceptable polyol, and subjected to wet milling. Also specifically disclosed is a poor water solubility organic compound particle for medical use, which is produced by such a production method.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: July 24, 2012
    Assignee: Activus Pharma Co., Ltd.
    Inventors: Takashi Hirokawa, Takahiro Tada
  • Publication number: 20110165259
    Abstract: [Problem to be Solved] The purpose of present invention is to provide a medicine which has low contamination with a fine-pulverizing medium, is safe and has improved bioavailability. [Solution] A method for producing a composite organic compound powder for medical use is used which comprises: mixing a poorly water-soluble and crystalline organic compound powder, a physiologically acceptable salt, a physiologically acceptable polyol, and a carboxyvinyl polymer and fine-pulverizing the organic compound powder; and removing at least the salt and the polyol during or after fine-pulverizing.
    Type: Application
    Filed: September 15, 2009
    Publication date: July 7, 2011
    Applicant: ACTIVUS PHARMA CO., LTD.
    Inventors: Takashi Hirokawa, Takahiro Tada, Jun Nihira
  • Publication number: 20100016597
    Abstract: Disclosed is a method for producing pulverized particles of a crystalline organic compound which is poorly water-soluble. Also disclosed is a pulverized organic compound particle produced by such a method. Specifically disclosed is a method for producing a poor water solubility organic compound particle for medical use, which is characterized in that a poor water solubility organic compound for medical use is mixed with a physiologically acceptable salt and a physiologically acceptable polyol, and subjected to wet milling. Also specifically disclosed is a poor water solubility organic compound particle for medical use, which is produced by such a production method.
    Type: Application
    Filed: September 24, 2009
    Publication date: January 21, 2010
    Applicant: Activus Pharma Co., Ltd.
    Inventors: Takashi Hirokawa, Takahiro Tada