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:
Sep. 26, 1989
Filed:
Dec. 02, 1987
Kaneto Uekama, Kumamoto, JP;
Yoshiyuki Tahara, Tsurugashima, JP;
Takanori Ijitsu, Oi, JP;
Tadashi Yamada, Oi, JP;
Nisshin Flour Milling Co., Ltd., Tokyo, JP;
Abstract
Now is provided a new sustained release drug preparation comprising such an inclusion complex of a medical compound with a hydrophobic cyclodextrin derivative, e.g. ethylated cyclodextrins, which sustains or retards the dissolution and release of the medical compound at a controlled rate from the inclusion complex and hence from the drug preparation containing the inclusion complex, so as to maintain the concentration of the medical compound in blood at an effective level for prolonged time. This drug preparation may further contain a second type of an inclusion complex of the medical compound with a hydrophilic cyclodextrin or hydrophilic cyclodextrin derivative, in mixture with the first type of the inclusion complex of the medical compound with a hydrophobic cyclodextrin derivative, to maintain the controlled release of the medical compound from the drug.