Patents by Inventor Howard Callahan

Howard Callahan 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).

  • Erodible film for treating the surfaces of teeth
    Publication number: 20040062724
    Abstract: A thin, flexible, bilayer or multi-layer film which when applied to teeth surfaces adheres and delivers an active compound to the underlying surface and erodes at a predetermined rate. The amount of time that the active agent remains in contact with the teeth surfaces is controlled by the composition of backing layer of the composite film. This erosion or residence time can be regulated one half hour to three hours, depending upon the desired therapeutic or cosmetic application.
    Type: Application
    Filed: May 23, 2003
    Publication date: April 1, 2004
    Inventors: Daniel G. Moro, Ernest Howard Callahan, David P. Nowotnik
  • Mucoadhesive erodible drug delivery device for controlled administration of pharmaceuticals and other active compounds
    Patent number: 6585997
    Abstract: The present invention relates to a layered pharmaceutical delivery device for the administration of pharmaceuticals or other active compounds to mucosal surfaces. The device may also be used by itself without the incorporation of a therapeutic. The device of the present invention consists of a water-soluble adhesive layer, a non-adhesive, bioerodable backing layer and one or more pharmaceuticals if desired in either or both layers. Upon application, the device adheres to the mucosal surface, providing protection to the treatment site and localized drug delivery. The “Residence Time”, the length of time the device remains on the mucosal surface before complete erosion, can be easily regulated by modifications of the backing layer.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: July 1, 2003
    Assignee: Access Pharmaceuticals, Inc.
    Inventors: Daniel G. Moro, Howard Callahan, David Nowotnik
  • Mucoadhesive erodible drug delivery device for controlled administration of pharmaceuticals and other active compounds
    Publication number: 20030044446
    Abstract: The present invention relates to a layered pharmaceutical delivery device for the administration of pharmaceuticals or other active compounds to mucosal surfaces. The device may also be used by itself without the incorporation of a therapeutic. The device of the present invention consists of a water-soluble adhesive layer, a non-adhesive, bioerodable backing layer and one or more pharmaceuticals if desired in either or both layers. Upon application, the device adheres to the mucosal surface, providing protection to the treatment site and localized drug delivery. The “Residence Time”, the length of time the device remains on the mucosal surface before complete erosion, can be easily regulated by modifications of the backing layer.
    Type: Application
    Filed: August 16, 2001
    Publication date: March 6, 2003
    Applicant: MUCOADHESIVE ERODIBLE DRUG DELIVERY DEVICE FOR CONTROLLED ADMN. OF PHARMACEUTICALS & OTHER ACTI
    Inventors: Daniel G. Moro, Howard Callahan, David Nowotnik