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: 4286587
    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: January 21, 1980
    Date of Patent: September 1, 1981
    Assignee: ALZA Corporation
    Inventor: Patrick S. Wong
  • Patent number: 4265874
    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: April 25, 1980
    Date of Patent: May 5, 1981
    Assignee: Alza Corporation
    Inventors: Pieter Bonsen, Patrick S. Wong, Felix Theeuwes
  • Patent number: 4250611
    Abstract: An intravaginal contraceptive system for the pre-programmed, unattended delivery of an antifertility steroid is disclosed. The system comprises (a) an antifertility steroid, (b) a delivery module comprising a reservoir for storing the steroid in an amount for execution of the program, a rate controller which maintains the rate of steroid delivered in a contraceptive effective amount throughout the life of the system, an energy source for transferring steroid from the reservoir to the vagina, and a portal for releasing the steroid 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) a contraceptive program which provides for the controlled release of steroid to produce an antifertility effect over a prolonged period of time.
    Type: Grant
    Filed: April 19, 1979
    Date of Patent: February 17, 1981
    Assignee: Alza Corporation
    Inventor: Patrick S. Wong
  • Patent number: 4241733
    Abstract: A patient-care apparatus housing a device for controlling the presence of pathogens is disclosed. The apparatus comprises a container with an inlet port and a device in the apparatus for controlling the presence of pathogens.
    Type: Grant
    Filed: September 24, 1979
    Date of Patent: December 30, 1980
    Assignee: ALZA Corporation
    Inventors: Jimmy B. Langston, Harold Leeper, Patrick S. Wong
  • Patent number: 4236517
    Abstract: A patient-care apparatus housing a device for controlling the presence of pathogens is disclosed. The apparatus comprises a container with an inlet port and a device in the apparatus for controlling the presence of pathogens.
    Type: Grant
    Filed: September 24, 1979
    Date of Patent: December 2, 1980
    Assignee: Alza Corporation
    Inventors: Jimmy B. Langston, Harold Leeper, Patrick S. Wong
  • Patent number: 4215691
    Abstract: An intravaginal contraceptive system for the pre-programmed, unattended delivery of an antifertility steroid is disclosed. The system comprises (a) an antifertility steroid, (b) a delivery module comprising a reservoir for storing the steroid in an amount for execution of the program, a rate controller which maintains the rate of steroid delivered in a contraceptive effective amount throughout the life of the system, an energy source for transferring steroid from the reservoir to the vagina, and a portal for releasing the steroid 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) a contraceptive program which provides for the controlled release of steroid to produce an antifertility effect over a prolonged period of time.
    Type: Grant
    Filed: October 11, 1978
    Date of Patent: August 5, 1980
    Assignee: Alza Corporation
    Inventor: Patrick S. Wong
  • Patent number: 4193403
    Abstract: A patient-care apparatus housing a device for controlling the presence of pathogens is disclosed. The apparatus comprises a container with an inlet port and a device in the apparatus for controlling the presence of pathogens.
    Type: Grant
    Filed: June 9, 1977
    Date of Patent: March 18, 1980
    Assignee: Alza Corporation
    Inventors: Jimmy B. Langston, Harold Leeper, Patrick S. Wong
  • Patent number: 4144309
    Abstract: A device for dispensing a microcide which consists of a first polymeric material housing a second polymeric material which second material depolymerizes when the device is in the environment of use to form an active microcide. The microcide controls the presence of micro-organisms in the environment over a prolonged period of time.
    Type: Grant
    Filed: June 9, 1977
    Date of Patent: March 13, 1979
    Assignee: Alza Corporation
    Inventors: Jimmy B. Langston, Harold Leeper, Patrick S. Wong