Patents by Inventor Ying Liang Ma

Ying Liang Ma 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).

  • Direct coating solid dosage forms using powdered materials
    Patent number: 8161904
    Abstract: The present invention provides a method and apparatus for dry coating solid dosage forms. The method includes the steps of placing solid dosage forms in a rotatable, electrically grounded housing, and spraying a film forming polymer powder composition into the housing during rotation thereof to form a polymer coating on the solid dosage forms, the polymer powder composition being sprayed using an electrostatic spray gun, and curing the coated solid dosage forms.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: April 24, 2012
    Assignee: The University of Western Ontario
    Inventors: Jiangxu Zhu, Yanfeng Luo, Ying Liang Ma, Hui Zhang
  • DIRECT COATING SOLID DOSAGE FORMS USING POWDERED MATERIALS
    Publication number: 20110114019
    Abstract: The present invention provides a method and apparatus for dry coating solid dosage forms. The method includes the steps of placing solid dosage forms in a rotatable, electrically grounded housing, and spraying a film forming polymer powder composition into the housing during rotation thereof to form a polymer coating on the solid dosage forms, the polymer powder composition being sprayed using an electrostatic spray gun, and curing the coated solid dosage forms.
    Type: Application
    Filed: November 15, 2010
    Publication date: May 19, 2011
    Applicant: THE UNIVERSITY OF WESTERN ONTARIO
    Inventors: Jiangxu ZHU, Yanfeng LUO, Ying Liang MA, Hui ZHANG
  • Direct coating solid dosage forms using powdered materials
    Patent number: 7862848
    Abstract: The present invention provides a method and apparatus for dry coating solid dosage forms. The method includes the steps of placing solid dosage forms in a rotatable, electrically grounded housing, and spraying a film forming polymer powder composition into the housing during rotation thereof to form a polymer coating on the solid dosage forms, the polymer powder composition being sprayed using an electrostatic spray gun, and curing the coated solid dosage forms.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: January 4, 2011
    Assignee: The University of Western Ontario
    Inventors: Jingxu Zhu, Yanfeng Luo, Ying Liang Ma, Hui Zhang
  • Apparatus for volumetric metering of small quantity of powder from fluidized beds
    Patent number: 6684917
    Abstract: The present invention provides a fluidized bed for dispensing small quantities of powders. The fluidized bed is made using a porous housing to permit injection and removal of fluid through the surrounding walls to improve the operation of the bed particularly for small particles of the group C size, including significantly reducing powder adhesion to the walls. In one aspect of the invention the fluidized bed housing is rotated about its longitudinal axis, which may be oriented at any suitable angle. A system for changing the volume of the bed is described as is a system for incorporating injection nozzles within the bed for constant agitation and prevention of powder adhering to the walls of the housing.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: February 3, 2004
    Assignee: The University of Western Ontario
    Inventors: Jesse Zhu, Jianzhang Wen, Ying Liang Ma, Hui Zhang
  • Apparatus for volumetric metering of small quantity of powder from fluidized beds
    Publication number: 20030111131
    Abstract: The present invention provides a fluidized bed for dispensing small quantities of powders. The fluidized bed is made using a porous housing to permit injection and removal of fluid through the surrounding walls to improve the operation of the bed particularly for small particles of the group C size, including significantly reducing powder adhesion to the walls. In one aspect of the invention the fluidized bed housing is rotated about its longitudinal axis, which may be oriented at any suitable angle. A system for changing the volume of the bed is described as is a system for incorporating injection nozzles within the bed for constant agitation and prevention of powder adhering to the walls of the housing.
    Type: Application
    Filed: December 17, 2001
    Publication date: June 19, 2003
    Inventors: Jesse Zhu, Jianzhang Wen, Ying Liang Ma, Hui Zhang