Patents by Inventor Ronald P. Haak

Ronald P. Haak 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).

  • Iontophoretic delivery method
    Patent number: 5167616
    Abstract: An improved method for delivering a drug or beneficial agent transdermally to humans by iontophoresis is provided. The method includes selecting and iontophoretically delivering the drug through a skin site which optimizes the transdermal delivery rate of the drug while minimizing inter-patient variability in skin resistance.
    Type: Grant
    Filed: December 14, 1989
    Date of Patent: December 1, 1992
    Assignee: Alza Corporation
    Inventors: Ronald P. Haak, J. Richard Gyory, Jane Yieh
  • Electrotransport transdermal system
    Patent number: 5162042
    Abstract: A transdermal therapeutic system which utilizes electrical current to facilitate drug delivery.
    Type: Grant
    Filed: December 27, 1991
    Date of Patent: November 10, 1992
    Assignee: Alza Corporation
    Inventors: J. Richard Gyory, Ronald P. Haak, Felix Theeuwes
  • Iontophoretic delivery device and method of hydrating same
    Patent number: 5158537
    Abstract: A dry-state iontophoretic drug delivery device (10, 70, 80) is provided. The device has drug and electrolyte reservoirs (15, 16) which are initially in a non-hydrated condition. A liquid-containing pouch (21, 22) is provided. In certain embodiments the liquid is contained in breakable capsules within the pouch. Water or other liquid can be released from the capsules in the pouch by squeezing or flexing the pouches (21, 22). Alternatively, the liquid can be released from the pouches (21, 22) using pouch piercing pins (36, 37). The liquid released from the pouches (21, 22) hydrates the drug and electrolyte reservoirs (15, 16) and activates the device. In another embodiment, the device (20, 20a) has liquid-containing gel layers (31, 32) which are initially separated from their respective electrode assemblies (8, 9). Liquid-wicking pathways (27, 28) are provided to carry the liquid from the gel layers (31, 32) to the drug and electrolyte layers (15, 16).
    Type: Grant
    Filed: October 29, 1990
    Date of Patent: October 27, 1992
    Assignee: Alza Corporation
    Inventors: Ronald P. Haak, J. Richard Gyory, Felix Theeuwes, Felix A. Landrau, Nathan Roth, Robert M. Myers
  • Membrane for electrotransport transdermal drug delivery
    Patent number: 5147296
    Abstract: A membrane capable of inhibiting agent release from a delivery system when no electrical current is flowing and yet provide minimal impedance to electrically-assisted agent delivery, useful both for incorporating into electrotransport agent delivery systems and for use in measuring agent release rates in in vitro testing.
    Type: Grant
    Filed: August 28, 1991
    Date of Patent: September 15, 1992
    Assignee: Alza Corporation
    Inventors: Felix Theeuwes, J. Richard Gyory, Ronald P. Haak
  • Membrane for electrotransport transdermal drug delivery
    Patent number: 5080646
    Abstract: A membrane capable of inhibiting agent release from a delivery system when no electrical current is flowing and yet provide minimal impedance to electrically-assisted agent delivery, useful both for incorporating into electrotransport agent delivery systems and for use in measuring agent release rates in in vitro testing.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: January 14, 1992
    Assignee: Alza Corporation
    Inventors: Felix Theeuwes, J. Richard Gyory, Ronald P. Haak
  • Electrotransport transdermal system
    Patent number: 4927408
    Abstract: A transdermal therapeutic system which utilizes electrical current to facilitate agent delivery and which isolates the electrochemical reactants and products from the agent containing reservoir.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: May 22, 1990
    Assignee: Alza Corporation
    Inventors: Ronald P. Haak, Felix Theeuwes, J. Richard Gyory