Patents Assigned to Symbollon Corporation
  • 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: 6432426
    Abstract: Non-staining topical iodine disinfecting compositions having the ability to inactivate pathogens associated with skin infections or diseases. based upon the presence of molecular iodine in a concentration above at least 15 ppm. Any other iodine species selected from the group consisting of complexed iodine and triiodide may be present with the total of such other iodine species limited to a concentration of less than about 700 ppm so that any visible stain resulting from the application of this composition on the skin will dissipate without leaving any visible skin coloration.
    Type: Grant
    Filed: December 12, 2000
    Date of Patent: August 13, 2002
    Assignee: Symbollon Corporation
    Inventor: Jack Kessler
  • Publication number: 20010056127
    Abstract: Non-staining topical iodine disinfecting compositions having the ability to inactivate pathogens associated with skin infections or diseases. based upon the presence of molecular iodine in a concentration above at least 15 ppm. Any other iodine species selected from the group consisting of complexed iodine and triiodide may be present with the total of such other iodine species limited to a concentration of less than about 700 ppm so that any visible stain resulting from the application of this composition on the skin will dissipate without leaving any visible skin coloration.
    Type: Application
    Filed: December 12, 2000
    Publication date: December 27, 2001
    Applicant: SYMBOLLON CORPORATION
    Inventor: Jack Kessler
  • Patent number: 6261577
    Abstract: Non-staining topical iodine disinfecting compositions having the ability to inactivate pathogens associated with skin infections or diseases. based upon the presence of molecular iodine in a concentration above at least 15 ppm. Any other iodine species selected from the group consisting of complexed iodine and triiodide may be present with the total of such other iodine species limited to a concentration of less than about 700 ppm so that any visible stain resulting from the application of this composition on the skin will dissipate without leaving any visible skin coloration.
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: July 17, 2001
    Assignee: Symbollon Corporation
    Inventor: 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: 5849291
    Abstract: The present invention relates to an enzymatically generated iodine microbicide for the inactivation of pathogenic organisms that are contaminants in or on sensitive biological materials such as the human eye. The biocidal agent from the enzymatic reaction is free molecular iodine which is generated at a minimum level of 5 ppm and comprises at least 25% of the total iodine species present on a molar basis.
    Type: Grant
    Filed: March 24, 1997
    Date of Patent: December 15, 1998
    Assignee: Symbollon Corporation
    Inventor: Jack H. 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
  • Patent number: 5648075
    Abstract: The present invention relates generally to an enzymatically generated iodine microbiocide and more specifically to the use of such a microbiocide for the inactivation of pathogenic organisms that are contaminants in sensitive biological materials. The biocidal agent from the enzymatic reaction is free molecular iodine generated so as to (1) establish a minimum level above 10 ppm of free molecular iodine and (2) to establish defined ratios of free molecular iodine to other iodine species such that free molecular iodine comprises at least 10% of the total iodine species present on a molar basis.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: July 15, 1997
    Assignee: Symbollon Corporation
    Inventors: Jack H. Kessler, James C. Richards
  • Patent number: 5639481
    Abstract: The present invention relates generally to an enzymatically generated iodine microbicide and more specifically to the use of such a microbiocide for the inactivation of pathogenic organisms that are contaminants in or on sensitive biological materials such as the human eye or tissue culture cells. The biocidal agent from the enzymatic reaction is free molecular iodine generated so as to establish a minimum level of 5 ppm in a fashion such that free molecular iodine comprises at least 25% of the total iodine species present on a molar basis.
    Type: Grant
    Filed: November 1, 1995
    Date of Patent: June 17, 1997
    Assignee: Symbollon Corporation
    Inventors: Jack H. Kessler, James C. Richards
  • Patent number: 5629024
    Abstract: Germicidal iodine based compositions are disclosed that consist of iodide anions, a source of peroxide and peroxidase in combination with iodine sequestering agents. The compositions are formed in situ in an aqueous based medium by combining a peroxide source, iodine ions or source thereof, a peroxidase classified within Enzyme Commission identification No. E.C. 1.11.1.7 and an iodine sequestrant. The addition of a sequestrant before the equilibration of the enzymatic reaction formed by admixing the composition with an aqueous based medium, provides for a non-reactive enzymatic composition. The resulting composition having an increase of available iodine concentration compared to an identical composition without an iodine sequestrant.
    Type: Grant
    Filed: August 22, 1994
    Date of Patent: May 13, 1997
    Assignee: Symbollon Corporation
    Inventors: Jack H. Kessler, Rick Panicucci, John J. Hickey
  • Patent number: 5419902
    Abstract: This invention relates to a method for inactivating pathogens using the peroxidase enzyme. The peroxidase enzyme is reacted with hydrogen peroxide or a source of hydrogen peroxide and an iodide anion to generate reaction products which are separated from the peroxidase enzyme and then used to inactivate pathogenic organisms.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: May 30, 1995
    Assignee: Symbollon Corporation
    Inventor: Jack Kessler
  • Patent number: 5227161
    Abstract: This invention relates to a disinfecting epidermal cleaner using peroxidase, peroxide and iodide. The active components are maintained inactive until admixed in a define proportion with water. The pH at which the peroxidase is stored is between 7.0 and 9.0 and the pH of the admixture of the active components is between 3.0 and 6.5.
    Type: Grant
    Filed: April 4, 1991
    Date of Patent: July 13, 1993
    Assignee: Symbollon Corporation
    Inventor: Jack H. Kessler