Patents by Inventor Ludwig J. Weimann

Ludwig J. Weimann 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: 20020138037
    Abstract: An apparatus for sonoporation for transdermal delivery of a microparticles suspension containing microencapsulated drugs includes a container having an end covered with a porous membrane and containing said microparticles suspension and an ultrasound horn having a tip submerged in said microparticles suspension containing microencapsulated drugs. The ultrasound horn applies ultrasound radiation to the microparticles suspension containing microencapsulated drugs.
    Type: Application
    Filed: January 28, 2002
    Publication date: September 26, 2002
    Inventor: Ludwig J. Weimann
  • Publication number: 20010006628
    Abstract: Transdermal drug delivery patches and methods of their production are described. The patches can be made such that the accommodate highly plasticizing drugs such as selegiline and/or the use of protonated forms of various drugs.
    Type: Application
    Filed: January 5, 2001
    Publication date: July 5, 2001
    Inventors: Sharad K. Govil, Ludwig J. Weimann
  • Patent number: 6010715
    Abstract: Devices for the controlled release of an active agent to the skin or mucosa of a host are disclosed, which devices are laminates of a backing layer and a monolithic carrier layer formed from a melt blend of an active ingredient with a thermoplastic matrix polymer without first dissolving or suspending the polymer or active ingredient in a solvent therefor, so that the carrier layer is substantially free of residual solvent, wherein the thermoplastic matrix polymer has a melt temperature between about 170.degree. C. and about 200.degree. C.
    Type: Grant
    Filed: October 21, 1997
    Date of Patent: January 4, 2000
    Assignee: Bertek, Inc.
    Inventors: John J. Wick, Ludwig J. Weimann, Wayne C. Pollock
  • Patent number: 5679373
    Abstract: Devices for the controlled release of an active agent to the skin or mucosa of a host are disclosed, which devices are laminates of a backing layer, a monolithic carrier layer of an active ingredient selected from active agent, active agent enhancers and mixtures thereof, melt-blended with a thermoplastic matrix polymer capable of controllably releasing the active ingredient, wherein the active ingredient is heat stable at the melt temperature of the matrix polymer, together with means for affixing the laminate to the skin or mucosa of the host so that the active ingredient is continuously released from the carrier layer thereto.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 21, 1997
    Assignee: Bertek, Inc.
    Inventors: John Wick, Ludwig J. Weimann, Wayne C. Pollock
  • Patent number: 5676969
    Abstract: Devices for the controlled release of an active agent to the skin or mucosa of a host are disclosed, which devices are laminates of a backing layer, a monolithic carrier layer of an active ingredient selected from active agent, active agent enhancers and mixtures thereof, melt-blended with a thermoplastic matrix polymer capable of controllably releasing the active ingredient, wherein the active ingredient is heat stable at the melt temperature of the matrix polymer, together with means for affixing the laminate to the skin or mucosa of the host so that the active ingredient is continuously released from the carrier layer thereto.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 14, 1997
    Assignee: Bertek, Inc.
    Inventors: John Wick, Ludwig J. Weimann, Wayne C. Pollock
  • Patent number: 5662926
    Abstract: Devices for the controlled release of an active agent to the skin or mucosa of a host are disclosed, which devices are laminates of a backing layer, a monolithic carrier layer of an active ingredient selected from active agent, active agent enhancers and mixtures thereof, melt-blended with a thermoplastic matrix polymer capable of controllably releasing the active ingredient, wherein the active ingredient is heat stable at the melt temperature of the matrix polymer, together with means for affixing the laminate to the skin or mucosa of the host so that the active ingredient is continuously released from the carrier layer thereto.
    Type: Grant
    Filed: April 20, 1995
    Date of Patent: September 2, 1997
    Assignee: Bertek, Inc.
    Inventors: John Wick, Ludwig J. Weimann, Wayne C. Pollock
  • Patent number: 5629014
    Abstract: Devices for the controlled release of an active agent to the skin or mucosa of a host are disclosed, which devices are laminates of a cellular foam layer having a first surface and a second surface, which foam layer has an active agent incorporated therein; a backing layer having an inner surface and an outer surface, wherein the inner surface is affixed to the second surface of the foam layer so that the active agent cannot permeate from the second surface of the foam layer through the outer surface of the backing layer; and means for affixing the laminate to the skin or mucosa of the host so that the active agent is capable of being continuously released from the first surface of the foam layer thereto. Methods for assembling the laminate devices are also disclosed, as are methods in which the foam layer is formed from a prepolymer solution on the backing layer. Methods are also disclosed for the polymerization of cellular urethane foams having active agents uniformly dispersed therethrough.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 13, 1997
    Assignee: Bertek, Inc.
    Inventors: Alfred Kwiatek, Ludwig J. Weimann, Wayne C. Pollock, Sharad K. Govil
  • Patent number: 5503844
    Abstract: Devices for the controlled release of an active agent to the skin or mucosa of a host are disclosed, which devices are laminates of a cellular foam layer having a first surface and a second surface, which foam layer has an active agent incorporated therein; a backing layer having an inner surface and an outer surface, wherein the inner surface is affixed to the second surface of the foam layer so that the active agent cannot permeate from the second surface of the foam layer through the outer surface of the backing layer; and means for affixing the laminate to the skin or mucosa of the host so that the active agent is capable of being continuously released from the first surface of the foam layer thereto. Methods for assembling the laminate devices are also disclosed, as are methods in which the foam layer is formed from a prepolymer solution on the backing layer. Methods are also disclosed for the polymerization of cellular urethane foams having active agents uniformly dispersed therethrough.
    Type: Grant
    Filed: May 18, 1993
    Date of Patent: April 2, 1996
    Assignee: MLI Acquisition Corp. II
    Inventors: Alfred Kwiatek, Ludwig J. Weimann, Wayne C. Pollock, Sharad K. Govil