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:
May. 16, 2000
Filed:
Sep. 03, 1998
Chung Il Hong, East Amherst, NY (US);
Jung Woo Kim, Seoul, KR;
Nam Hee Choi, Seoul, KR;
Hee Jong Shin, Kyeonggi-do, KR;
Su Geun Yang, Kyeonggi-do, KR;
Chong Kun Dang Corp., , KR;
Abstract
The present invention relates to a microemulsion preconcentrate composition comprising (1) cyclosporin as an active component; (2) alkyl ester of polycarboxylic acid and/or carboxylic acid ester of polyols as a lipophilic solvent; (3) oil; and (4) surfactant. The composition according to the present invention is characterized in that it dissolves in an external phase such as water, artificial gastric fluid and artificial intestinal fluid by controlling the mixing ratio of the components thereby to get the microemulsion form of inner phase diameter of 100 nm or below. The composition according to the present invention can be formulated as the dosage form of a soft capsule, a hard capsule sealed with a gelatin banding at the conjugated portion, or an oral liquid preparation for oral administration. Especially, in the case that the composition according to the present invention is formulated in a soft capsule, the resultant capsule does not show the disadvantages of the prior arts such as the reactivity of hydrophilic solvent with gelatin shell of soft capsule and the volatility of hydrophilic solvent. It is because the existing patents use a hydrophilic solvent as an essential component of their compositions but the present invention does not use any hydrophilic solvent.