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Osmotic releasing device having a plurality of release rate patterns

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • A61M-037/00
출원번호 US-0536006 (1974-12-23)
발명자 / 주소
  • Zaffaroni Alejandro (Atherton CA) Michaels Alan S. (Atherton CA) Theeuwes Felix (Los Altos CA)
출원인 / 주소
  • Alza Corporation (Palo Alto CA 02)
인용정보 피인용 횟수 : 70  인용 특허 : 0

초록

An osmotic device for releasing a useful agent at different release rate patterns from the device in a selected environment is disclosed. The device is comprised of a wall surrounding and forming a compartment as a means for containing a useful agent and having a passageway for releasing the agent.

대표청구항

An oral osmotic device for the controlled dispensing of a unit dosage amount of drug to the gastrointestinal tract, said device comprising; a. a shaped semipermeable wall formed of an inert, nontoxic material that is permeable to the passage of an exTernal gastrointestinal tract fluid, substantially

이 특허를 인용한 특허 (70)

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