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. 17, 2005
Filed:
Nov. 22, 2001
Kyu-il Cho, Daejeon, KR;
Hyon-ho Baek, Daejeon, KR;
Jung Hyun Kim, Seoul, KR;
Jun Young Lee, Seoul, KR;
IL Hyuk Kim, Seoul, KR;
Jung Hwan Park, Kyunggi-do, KR;
Kyu-Il Cho, Daejeon, KR;
Hyon-Ho Baek, Daejeon, KR;
Jung Hyun Kim, Seoul, KR;
Jun Young Lee, Seoul, KR;
Il Hyuk Kim, Seoul, KR;
Jung Hwan Park, Kyunggi-do, KR;
Samsung Fine Chemicals Co., Ltd., Ulsan, KR;
Abstract
The present invention relates to a preparation method of solvent-free water-dispersible hydroxypropyl methyl cellulose phthalate nanoparticle, and more particularly, to a preparation method of solvent-free water-dispersible hydroxypropyl methyl cellulose phthalate nanoparticle, which is environment-friendly and advantageous in disintegration and dissolution when used as an enteric coating material, which is prepared by obtaining suitable hydroxypropyl methyl cellulose phthalate (HPMCP) particle through aqueous emulsification process and regulating content of remaining electrolyte through ion exchange process.