Patents Assigned to Controlled Release Technologies, Inc.
  • Publication number: 20230309502
    Abstract: An animal litter treatment composition comprising: at least one sulfo-oxo compound defined by formula: wherein R1 and R2 are independently hydrogen, a substituted or unsubstituted alkyl, a substituted or unsubstituted alkenyl, a substituted or unsubstituted aryl, amino, a substituted or unsubstituted alkylamino, halide, a substituted or unsubstituted haloalkyl, hydroxy, a substituted or unsubstituted hydroxyalkyl, or a substituted or unsubstituted alkoxyalkyl, optionally, R1 and R2 together with the carbon the are attached form a ring of 3-7 atoms, and R3 is hydrogen, (un)substituted alkyl, (un)substituted alkenyl, (un)substituted aryl, (un)substituted sulfonyl radical resulting in a (un)substituted sulfonic anhydride or (un)substituted carbonyl radical resulting in a symmetrical or asymmetrical sulfonic-carboxylic anhydride, optionally, R2 and R3 together with sulfur, the carbon and the oxygen they are attached, form a ring of 5-7 atoms, is disclosed.
    Type: Application
    Filed: February 17, 2022
    Publication date: October 5, 2023
    Applicant: Controlled Release Technologies, Inc.
    Inventor: Joseph M. Serpico
  • Patent number: 5019723
    Abstract: A self-regulated system and method for controllably administering a therapeutic agent to a patient is disclosed. A therapeutic agent is driven by unidirectional electrostatic diffusion across a rate-controlling electret membrane. The diffused therapeutic agent is then delivered to a patient. The preparation of the electret membrane and therapeutic agent delivery apparatus are also disclosed.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: May 28, 1991
    Assignee: Controlled Release Technologies, Inc.
    Inventor: Loi H. Tran
  • Patent number: 4871352
    Abstract: A self-regulated system and method for controllably administering a therapeutic agent to a patient is disclosed. A therapeutic agent is driven by unidirectional electrostatic diffusion across a rate-controlling electret membrane. The diffused therapeutic agent is then delivered to a patient. The preparation of the electret membrane and therapeutic agent delivery apparatus are also disclosed.
    Type: Grant
    Filed: December 7, 1987
    Date of Patent: October 3, 1989
    Assignee: Controlled Release Technologies, Inc.
    Inventor: Loi H. Tran
  • Patent number: 4842598
    Abstract: A method and apparatus for controllably administering a therapeutic agent to a patient is disclosed. The method and apparatus uses an electromotive force between an anode and a cathode to cause the therapeutic agent to migrate through a semipermeable membrane. The therapeutic agent is then delivered to the patient.
    Type: Grant
    Filed: December 24, 1987
    Date of Patent: June 27, 1989
    Assignee: Controlled Release Technologies, Inc.
    Inventor: Loi H. Tran
  • Patent number: 4822339
    Abstract: A method and apparatus for controllably administering one or more therapeutic agents to a patient is disclosed. The method and apparatus uses an electromotive force between an anode and a cathode to cause at least one therapeutic agent to migrate through a semipermeable ion selective membrane. The therapeutic agent is then delivered to a patient.
    Type: Grant
    Filed: June 16, 1987
    Date of Patent: April 18, 1989
    Assignee: Controlled Release Technologies, Inc.
    Inventor: Loi H. Tran
  • Patent number: 4715850
    Abstract: A method and apparatus for controllably administering a therapeutic agent to a patient is disclosed. The method and apparatus uses an electromotive force between an anode and a cathode to cause the therapeutic agent to migrate through a semipermeable membrane. The therapeutic agent is then delivered to the patient.
    Type: Grant
    Filed: December 6, 1984
    Date of Patent: December 29, 1987
    Assignee: Controlled Release Technologies, Inc.
    Inventor: Loi H. Tran