Patents by Inventor Youqin Tian

Youqin Tian 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).

  • Punctal plugs and methods of delivering therapeutic agents
    Patent number: 8753666
    Abstract: The present invention concerns implantable ocular devices for the sustained release of medication to the eye, and methods for manufacturing and using such devices. In one embodiment, the present invention provides a device comprising: (a) a body comprising a matrix of a prostaglandin and a silicone; (b) a parylene coating on the outer surface of the body; and (c) one or more pores extending from the outer surface of the parylene coating to the outer surface of the body.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: June 17, 2014
    Assignee: Alcon Research, Ltd.
    Inventors: Theron R. Rodstrom, Larry Smith, II, Youqin Tian, David Allen Marsh, Alan L. Weiner, Shivalik Bakshi
  • Use of cyclodextrins as an active ingredient for treating dry AMD and solubilizing drusen
    Patent number: 8158609
    Abstract: The present invention is directed to the treatment of disorders involving the accumulation of drusen, such as dry age-related macular degeneration and geographic atrophy via administration of therapeutically effective amounts of at least one monomeric or polymeric cyclodextrin.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: April 17, 2012
    Assignee: Novartis AG
    Inventors: David Allen Marsh, Robert J. Collier, Jr., Michael A. Kapin, Youqin Tian, Eliot Mark Slovin
  • Bioerodible film for ophthalmic drug delivery
    Patent number: 8084054
    Abstract: Drug delivery film compositions containing a combination of a water-soluble, film-forming polymers and a fatty acid glyceride or ester are suitable for delivering ophthalmic drugs.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: December 27, 2011
    Assignee: Novartis AG
    Inventors: Bhagwati P. Kabra, Janet D. Howie, Youqin Tian, David Allen Marsh, Gustav Graff
  • Punctal Plugs and Methods of Delivering Therapeutic Agents
    Publication number: 20080181930
    Abstract: The present invention concerns implantable ocular devices for the sustained release of medication to the eye, and methods for manufacturing and using such devices. In one embodiment, the present invention provides a device comprising: (a) a body comprising a matrix of a prostaglandin and a silicone; (b) a parylene coating on the outer surface of the body; and (c) one or more pores extending from the outer surface of the parylene coating to the outer surface of the body.
    Type: Application
    Filed: January 30, 2008
    Publication date: July 31, 2008
    Applicant: ALCON RESEARCH, LTD.
    Inventors: Theron R. Rodstrom, Larry Smith, Youqin Tian, David Allen Marsh, Alan L. Weiner, Shivalik Bakshi
  • Bioerodible film for ophthalmic drug delivery
    Publication number: 20040126408
    Abstract: Drug delivery film compositions containing a combination of a water-soluble, film-forming polymers and a fatty acid glyceride or ester are suitable for delivering ophthalmic drugs.
    Type: Application
    Filed: June 30, 2003
    Publication date: July 1, 2004
    Applicant: Alcon, Inc.
    Inventors: Bhagwati P. Kabra, Janet D. Howie, Youqin Tian, David Allen Marsh, Gustav Graff
  • Butorphanol sustained release formulations
    Patent number: 6197344
    Abstract: Controlled, sustained release formulations of butorphanol are provided. Such formulations can be an aqueous suspension of butorphanol freebase or an oil suspension of a butorphanol salt. Processes for using such formulations to provide long term analgesia are also provided.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: March 6, 2001
    Assignee: Abbott Laboratories
    Inventors: Hung-Chih Chang, Lukchiu Li, Youqin Tian