Patents by Inventor Yongjun Duan

Yongjun Duan 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).

  • Publication number: 20030026852
    Abstract: This invention describes a non-aqueous oral composition of molecular iodine in a stabilized hydrophobic environment containing a hydrophobe or combination of hydrophobes for treating different disease states.
    Type: Application
    Filed: March 27, 2001
    Publication date: February 6, 2003
    Applicant: SYMBOLLON CORPORATION
    Inventors: Yongjun Duan, Jack Kessler
  • Patent number: 6248335
    Abstract: A stabilized solid oral pharmaceutical composition comprised of iodide and iodate as the active agents in the presence of one or more pharmaceutical excipients and a method for preparing these stabilized compositions.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: June 19, 2001
    Assignee: Symbollon Corporation
    Inventors: Yongjun Duan, Kirk Dinehart, John Hickey, Jack Kessler
  • Patent number: 5962029
    Abstract: A method for forming an iodine disinfecting solution that continuously generates free molecular iodine at a controlled average rate of at least 0.2 ppm per hour over a sustained and extended time period. The method involves combining persulfate anions and iodide anions in sufficient quantity in an aqueous medium having a resulting pH of less than about 6.5 so as to create an iodine generating capacity in said aqueous medium of between 1.5 and 6.5 with a generated concentration of at least 5 ppm of free molecular iodine and maintaining this concentration over the course of the extended time period.
    Type: Grant
    Filed: July 5, 1996
    Date of Patent: October 5, 1999
    Assignee: Symbollon Corporation
    Inventors: Yongjun Duan, Jack Howard Kessler
  • Patent number: 5885592
    Abstract: The invention is a method of administering therapeutic iodine for treating a disorder in a mammal. The invention comprises a step of feeding said mammal an effective amount of an oxidant for an iodine species and an iodine reductant which will cause oxidation-reduction reactions upon contact with the gastric juices present in the stomach of the mammal. This is done such that molecular iodine is generated in vivo at a ratio of molecular iodine to total iodine of above at least about 0.65. The invention also discloses a non-aqueous pharmaceutically acceptable carrier with said oxidant and reductant having the ability to cause oxidation-reduction reactions upon contact with the gastric juices present in the stomach of said mammal and in an amount sufficient to generate molecular iodine, in vivo, at a ratio of molecular iodine to total iodine of above at least about 0.65.
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: March 23, 1999
    Assignee: Symbollon Corporation
    Inventors: Yongjun Duan, John Hickey, Rick Panicucci, Jack Kessler
  • Patent number: 5772971
    Abstract: A microbial decontamination system includes a chamber for housing items to be decontaminated as well as a source of one or more iodine-containing fluids that are conveyed to the chamber as necessary. The system also includes a detector element for monitoring the concentration of free iodine within the chamber. A signal representative of the free iodine concentration is conveyed to a controller element which communicates with receptacles for housing the iodine-containing fluids so that additional iodine-containing fluids may be added to maintain the free iodine concentration within the chamber at a desired level.
    Type: Grant
    Filed: July 5, 1996
    Date of Patent: June 30, 1998
    Assignee: Symbollon Corporation
    Inventors: Joseph Murphy, John Hickey, Yongjun Duan