Patents by Inventor Iona Hiu Tung Sham

Iona Hiu Tung Sham 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: 7468434
    Abstract: This invention provides a method for treating an eye disease in a patient comprising: providing a photosensitive prodrug that releases upon exposure to light an active ingredient to treat the eye disease; administering the prodrug in a pharmaceutically accepted vehicle to the subject, and exposing the eye of the subject to an external light source to cause the prodrug to release the active ingredient. This invention also provides a composition for the treatment of glaucoma, comprising a compound containing a lithium ion-chelated in a crown ether- or aza-crown ether-containing chromene or diazene derivative and a pharmaceutically acceptable carrier.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: December 23, 2008
    Assignee: The University of Hong Kong
    Inventors: Paul Michel Georges Vanhoutte, Chi-Ming Che, Kwok-Fai So, Iona Hiu Tung Sham
  • Patent number: 7157155
    Abstract: Materials containing one or more borazine rings are employed as materials for electroluminescent devices. The compounds have molecular structures represented by the following formula: in which R1–R6 are independently a metal; a whole or part of an optionally substituted borazine ring; hydrogen; halogen; hydroxyl; optionally substituted alkyl, cycloalkyl, aryl, acyl, alkoxy, acyloxy, amino, acylamino, aralkyl, cyano, carboxyl, thio, vinyl, styryl, aminocarbonyl, carbamoyl, aryloxycarbonyl, phenoxycarbonyl, or alkoxycarbonyl, as well as recognized donor and acceptor groups. The compounds have high thermal stability as well as hole and electron mobilities.
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: January 2, 2007
    Assignee: The University of Hong Kong
    Inventors: Chi-Ming Che, Iona Hiu Tung Sham