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US-2024009291-A1 · Jan 11, 2024 · US
Controlled release composition
US8980322B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8980322-B2 |
| Application number | US-54915004-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 16, 2004 |
| Priority date | Mar 17, 2003 |
| Publication date | Mar 17, 2015 |
| Grant date | Mar 17, 2015 |
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Abstract
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The present invention provides a controlled release composition showing release of an active ingredient (proton pump inhibitor) controlled in two or more steps at different release rates, which contains 1) a release-controlled part A capable of controlling release of the active ingredient to occur at a predetermined rate, 2) a release-controlled part B capable of controlling release of the active ingredient to occur at a predetermined rate lower than the release rate of the release-controlled part A, and where necessary, 3) a release-controlled part C capable of controlling release of the active ingredient to occur at a predetermined rate faster than the release rate of the release-controlled part B, wherein the release of the active ingredient from the release-controlled part B precedes the release of the active ingredient from the release-controlled part A (when release-controlled part C is contained, the release of the active ingredient from the release-controlled part C precedes the release of the active ingredient from the release-controlled part B).
First claim
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The invention claimed is: 1. An oral controlled release composition showing release of an active ingredient controlled in two or more steps at different release rates, which consists essentially of 1) a release-controlled part A comprising lansoprazole or a salt thereof or an optically active form thereof as an active ingredient, low-substituted hydroxypropylcellulose and a hydrophilic polymer, wherein the release-controlled part A is a sustained-release matrix, and wherein the re…
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Frequently asked questions
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- What does patent US8980322B2 cover?
- The present invention provides a controlled release composition showing release of an active ingredient (proton pump inhibitor) controlled in two or more steps at different release rates, which contains 1) a release-controlled part A capable of controlling release of the active ingredient to occur at a predetermined rate, 2) a release-controlled part B capable of controlling release of the acti…
- Who is the assignee on this patent?
- Nagahara Naoki, Miyamoto Keiko, Akiyama Yohko, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification A61K9/209. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Mar 17 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).