The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 05, 1997
Filed:
Apr. 22, 1996
Takehisa Hata, Nagaokakyo, JP;
Akira Kagayama, Ikoma, JP;
Sumihisa Kimura, Kawanishi, JP;
Satoshi Ueda, Kawanishi, JP;
Saburo Murata, Takarazuka, JP;
Fujisawa Pharmaceutical Co., Ltd., Osaka, JP;
Abstract
The invention relates to a delayed action preparation which comprises a core comprising a drug and a swelling agent and an outer membrane comprising a biodegradable high molecular weight substance characterized in that the swelling agent is contained in a sufficient amount to cause a explosion of the outer membrane of biodegradable high molecular weight substance at a definite time after administration. This preparation provides for free control over the timing of drug release and is suited for administration not only by the oral route but also by the intramuscular, subcutaneous and other routes.