Patents by Inventor Wilhelm Leung

Wilhelm Leung 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).

  • SURFACE TREATED IMPLANTABLE ARTICLES AND RELATED METHODS
    Publication number: 20120245682
    Abstract: Surface treated implantable articles and related methods are disclosed. The surface treated implantable articles can be substantially flash-free, include one or more rounded edges, or include an enhanced optical clarity, one or all of which can be produced by polishing. The polishing can include causing the implantable articles to be repeatedly impacted with polishing media when the articles are swelled to an enlarged state. The polishing process can be particularly useful for smoothing lacrimal implants insertable in a lacrimal canaliculus.
    Type: Application
    Filed: June 4, 2012
    Publication date: September 27, 2012
    Applicant: QLT INC.
    Inventors: Alan R. Rapacki, Wilhelm Leung
  • Surface treated implantable articles and related methods
    Patent number: 8210902
    Abstract: Surface treated implantable articles and related methods are disclosed. The surface treated implantable articles can be substantially flash-free, include one or more rounded edges, or include an enhanced optical clarity, one or all of which can be produced by polishing. The polishing can include causing the implantable articles to be repeatedly impacted with polishing media when the articles are swelled to an enlarged state. The polishing process can be particularly useful for smoothing lacrimal implants insertable in a lacrimal canaliculus.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: July 3, 2012
    Assignee: QLT Inc.
    Inventors: Alan R. Rapacki, Wilhelm Leung
  • Surface treated implantable articles and related methods
    Publication number: 20090298390
    Abstract: Surface treated implantable articles and related methods are disclosed. The surface treated implantable articles can be substantially flash-free, include one or more rounded edges, or include an enhanced optical clarity, one or all of which can be produced by polishing. The polishing can include causing the implantable articles to be repeatedly impacted with polishing media when the articles are swelled to an enlarged state. The polishing process can be particularly useful for smoothing lacrimal implants insertable in a lacrimal canaliculus.
    Type: Application
    Filed: September 5, 2008
    Publication date: December 3, 2009
    Applicant: QLT Plug Delivery, Inc. - QPDI
    Inventors: Alan R. Rapacki, Wilhelm Leung