Patents by Inventor Patrick S. Wong

Patrick S. Wong 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).

  • Patent number: 5573776
    Abstract: An osmotic device (10) for delivering an ergot alkaloid into the mouth of a human patient is disclosed. The device (10) has a size and shape adapting it to be comfortably retained in the mouth for extended periods of time. The device (10) comprises a wall (12) surrounding a compartment (13) housing a layer of an ergot alkaloid (14) and a layer (16) of a fluid swellable, hydrophilic polymer. A passageway (17) in the wall (12) connects the ergot alkaloid (14) with the exterior of the device (10). The wall (12) is permeable to the passage of aqueous biological fluid but substantially impermeable to the passage of the hydrophilic polymer (16). In one embodiment the ergot alkaloid (14) has a different color than the hydrophilic polymer (16). The wall (12) is sufficiently translucent to permit the patient to see the amount of ergot alkaloid (14) remaining to be delivered.
    Type: Grant
    Filed: September 8, 1994
    Date of Patent: November 12, 1996
    Assignee: ALZA Corporation
    Inventors: Juan M. E. Harrison, Brian L. Barclay, Jerry D. Childers, Jeri D. Wright, Virgil A. Place, Patrick S. Wong
  • Patent number: 5545413
    Abstract: A dosage form is disclosed comprising the antidiabetic drug glipizide for administering to a patient in need of glipizide therapy.
    Type: Grant
    Filed: January 22, 1991
    Date of Patent: August 13, 1996
    Assignee: Alza Corporation
    Inventors: Anthony L. Kuczynski, Atul D. Ayer, Patrick S. Wong
  • Patent number: 5232705
    Abstract: A dosage form is disclosed that comprises means inside the dosage form for providing a substantially drug-free interval before the dosage form delivers a drug from inside the dosage form. The dosage form in an embodiment comprises a drug on the exterior of the dosage form, which drug is available for immediate delivery.
    Type: Grant
    Filed: April 1, 1992
    Date of Patent: August 3, 1993
    Assignee: Alza Corporation
    Inventors: Patrick S. Wong, Felix Theeuwes, Atul D. Ayer, Anthony L. Kuczynski
  • Patent number: 5178867
    Abstract: The invention pertains to a dosage form for orally administering a drug in eight hours or less to the stomach and small intestine for a therapeutic result.
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: January 12, 1993
    Assignee: Alza Corporation
    Inventors: George V. Guittard, Howard A. Carpenter, Ernest S. Quan, Patrick S. Wong, Lawrence G. Hamel
  • Patent number: 5160744
    Abstract: A dosage form is disclosed comprising means for delaying the delivery of drug from the dosage form following the administration of the dosage form to a patient in need of drug therapy.
    Type: Grant
    Filed: June 27, 1991
    Date of Patent: November 3, 1992
    Assignee: Alza Corporation
    Inventors: Frank Jao, Patrick S. Wong, Hoa T. Huynh, Kathy McChesney, Pamela K. Wat
  • Patent number: 5156850
    Abstract: A dosage form is disclosed that comprises means inside the dosage form for providing a substantially drug-free interval before the dosage form delivers a drug from inside the dosage form. The dosage form in an embodiment comprises a drug on the exterior of the dosage form, which drug is available for immediate delivery.
    Type: Grant
    Filed: August 31, 1990
    Date of Patent: October 20, 1992
    Assignee: ALZA Corporation
    Inventors: Patrick S. Wong, Felix Theeuwes, Atul D. Ayer, Anthony L. Kuczynski
  • Patent number: 5098714
    Abstract: An osmotic device is disclosed comprising an exterior coat comprising an estrogenic and a progestogenic steroid that are delivered immediately as a contraceptive pair for fertility regulation in a female, and a compartment comprising an estrogenic steroid that is delivered at a controlled rate over a prolonged period of time for fertility regulation in a female.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: March 24, 1992
    Assignee: ALZA Corporation
    Inventors: Jeri D. Wright, Jerry D. Childers, Brian L. Barclay, Patrick S. Wong, Linda E. Atkinson
  • Patent number: 5091190
    Abstract: A dosage form is disclosed comprising the antidiabetic drug glipizide for administering to a patient in need of glipizide therapy.
    Type: Grant
    Filed: February 8, 1991
    Date of Patent: February 25, 1992
    Assignee: ALZA Corporation
    Inventors: Anthony L. Kuczynski, Atul D. Ayer, Patrick S. Wong
  • Patent number: 5035897
    Abstract: A dosage form is disclosed comprising granule means for delivering soluble to insoluble drug to a warm-blooded animal.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: July 30, 1991
    Assignee: Alza Corporation
    Inventors: Atul D. Ayer, Anthony L. Kuczynski, Patrick S. Wong
  • Patent number: 5028434
    Abstract: A dosage form is disclosed comprising nilvadipine for administering to a patient in need of cardiovascular therapy.
    Type: Grant
    Filed: August 7, 1989
    Date of Patent: July 2, 1991
    Assignee: Alza Corporation
    Inventors: Brian L. Barclay, Patrick S. Wong, Jeri D. Wright, Jerry D. Childers
  • Patent number: 4867969
    Abstract: A composition of matter comprising a drug, a neutral hydrogel and an ionic hydrogel. The composition can be administered from a delivery system to a biological receptor over time.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: September 19, 1989
    Assignee: ALZA Corporation
    Inventors: Paul R. Magruder, Patrick S. Wong, Felix Theeuwes, George V. Guittard
  • Patent number: 4842867
    Abstract: A dosage form comprising (1) an immediately available dose of a beneficial drug followed by a timed delayed dose of drug, or (2) a timed delayed dose of drug.
    Type: Grant
    Filed: May 9, 1986
    Date of Patent: June 27, 1989
    Assignee: Alza Corporation
    Inventors: Atul D. Ayer, Felix Theeuwes, Patrick S. Wong
  • Patent number: 4743247
    Abstract: A device is disclosed with an internal space for receiving a beneficial agent. The device comprises a wall surrounding a compartment provided with an internal space and a hydrogel. A passageway in the wall connects the exterior of the device with the internal space. The passageway is used for filling the space with a beneficial agent, and then for dispensing the beneficial agent from the device.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: May 10, 1988
    Assignee: ALZA Corporation
    Inventor: Patrick S. Wong
  • Patent number: 4629449
    Abstract: The invention is for a method of treating a decrease in estrogen secretion in a woman after the cessation of cyclic ovulation using a vaginal dispenser comprising a wall surrounding an internal lumen and having a pair of ends with one end placed inside the other end to form a closed dispenser. A vaginally administrable beneficial agent is housed in the lumen for release by the dispenser over time.
    Type: Grant
    Filed: March 21, 1985
    Date of Patent: December 16, 1986
    Assignee: ALZA Corporation
    Inventor: Patrick S. Wong
  • Patent number: 4529398
    Abstract: A patient-care system is disclosed comprising a container housing a device that delivers an agent for controlling the presence of pathogens. Also, the device and a method are disclosed using the device for preventing pathogenic infections.
    Type: Grant
    Filed: July 12, 1982
    Date of Patent: July 16, 1985
    Inventors: Patrick S. Wong, Jimmy B. Langston, Harold M. Leeper
  • Patent number: 4464258
    Abstract: A patient-care system is disclosed comprising a container housing a device that delivers an agent for controlling the presence of pathogens. Also, the device and a method are disclosed using the device for preventing pathogenic infections.
    Type: Grant
    Filed: January 3, 1983
    Date of Patent: August 7, 1984
    Assignee: ALZA Corporation
    Inventors: Patrick S. Wong, Jimmy B. Langston, Harold M. Leeper
  • Patent number: 4460367
    Abstract: A patient-care system is disclosed comprising a container housing a device that delivers an agent for controlling the presence of pathogens. Also, the device and a method are disclosed using the device for preventing pathogenic infections.
    Type: Grant
    Filed: July 12, 1982
    Date of Patent: July 17, 1984
    Assignee: ALZA Corporation
    Inventors: Patrick S. Wong, Jimmy B. Langston, Harold M. Leeper
  • Patent number: 4445889
    Abstract: A method for preventing an infection in a patient introduced through a indwelling catheter, the method comprising, connecting the patient to the catheter, connecting the catheter to a fluid receiving container, admitting into the container a biocidal dispensing device, and releasing a biocide into fluid in the container for inhibiting the growth of infectious bacteria in the container and concomitantly their introduction into the catheter and the patient.
    Type: Grant
    Filed: July 12, 1982
    Date of Patent: May 1, 1984
    Assignee: ALZA Corporation
    Inventors: Patrick S. Wong, Jimmy B. Langston, Harold M. Leeper
  • Patent number: 4402695
    Abstract: An intravaginal therapeutic system for the pre-programmed, unattended delivery of a drug is disclosed. The system comprises (a) a drug, (b) a delivery module comprising a reservoir for storing the drug in an amount for execution of the program, a rate controller which maintains the rate of drug delivered in a therapeutically effective amount throughout the life of the system, an energy source for transferring drug from the reservoir to the vagina, and a portal for releasing the drug from the module to the vagina, (c) a platform which integrates the module into a unit sized, shaped and adapted for insertion and retention in a vagina, and (d) therapeutic program which provides for the controlled release of drug to produce a beneficial effect over a prolonged period of time.
    Type: Grant
    Filed: March 30, 1981
    Date of Patent: September 6, 1983
    Assignee: Alza Corporation
    Inventor: Patrick S. Wong
  • Patent number: 4344929
    Abstract: A method is disclosed for delivering a drug substantially-free of rapid precipitation from an osmotic device. The osmotic device comprises a semipermeable wall surrounding a compartment housing (1) a drug that exhibits limited solubility under neutral and acid conditions, and (2) a compound capable of evolving carbon dioxide in the presence of an acid in the environment of use. The method comprises, (a) imbibing fluid through the wall into the compartment at a rate determined by the permeability of the wall and the osmotic pressure gradient across the wall, (b) forming in the compartment a basic solution containing drug and compound, which solution is delivered from the compartment through the passageway, (c) reacting the compound with the acid in the environment at the device-environment interface for evolving carbon dioxide, thereby, (d) providing an effervescent suspension in the environment that delivers the drug in a finely dispersed form to the environment of use over time.
    Type: Grant
    Filed: January 26, 1981
    Date of Patent: August 17, 1982
    Assignee: ALZA Corporation
    Inventors: Pieter Bonsen, Patrick S. Wong, Felix Theeuwes