3.
    发明专利
    未知

    公开(公告)号:DD231984A5

    公开(公告)日:1986-01-15

    申请号:DD27312385

    申请日:1985-02-07

    Applicant: PFIZER

    Inventor: CARDINAL JOHN R

    Abstract: Laminate device for the controlled and prolonged release of at least one active agent to an ambient environment comprising at least one core sheet, said core sheet or sheets comprising said agent or agents in a polymer matrix, and, in a preferred embodiment, a porosity enhancing agent in admixture with said agent; said core sheet or sheets being alternately sandwiched or interposed between coextensive inert polymeric films substantially impermeable to said environment and to said agenit or agents, said device being perforated by one or a plurality of macroholes extending through said sheets and said films. In a modification of said device the perimeter edge thereof is coated by an inert polymeric film substantially impermeable to said environment and to said agent or agents. Also included are methods for making such a device.

    5.
    发明专利
    未知

    公开(公告)号:LV5396A3

    公开(公告)日:1994-03-10

    申请号:LV931166

    申请日:1993-10-22

    Applicant: PFIZER

    Inventor: CARDINAL JOHN R

    LAMINATE DEVICE FOR CONTROLLED AND PROLONGED RELEASE OF SUBSTANCES TO AN AMBIENT ENVIRONMENT

    公开(公告)号:CA1237982A

    公开(公告)日:1988-06-14

    申请号:CA473649

    申请日:1985-02-06

    Applicant: PFIZER

    Inventor: CARDINAL JOHN R

    Abstract: LAMINATE DEVICE FOR CONTROLLED AND PROLONGED RELEASE OF SUBSTANCES TO AN AMBIENT ENVIRONMENT Laminate device for the controlled and prolonged release of at least one active agent to an ambient environment comprising at least one core sheet, said core sheet or sheets comprising said agent or agents in a polymer matrix, and, in a preferred embodiment, a porosity enhancing agent in admixture with said agent; said core sheet or sheets being alternately sandwiched or interposed between coextensive inert polymeric films substantially impermeable to said environment and to said agent or agents, said device being perforated by one or a plurality of macroholes extending through said sheets and said films. In a modification of said device the perimeter edge thereof is coated by an inert polymeric film substantially impermeable to said environment and to said agent or agents. Also included are methods for making such a device.

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