Hyaluronic acid derivatives

US9301972B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9301972-B2
Application numberUS-201414537464-A
CountryUS
Kind codeB2
Filing dateNov 10, 2014
Priority dateDec 6, 2006
Publication dateApr 5, 2016
Grant dateApr 5, 2016

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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Abstract

Official abstract text for this publication.

The present invention relates to an injection solution for intra-articular administration for treating arthritic disorders comprising a cross-linked hyaluronic acid derivative wherein part of functional groups of a hyaluronic acid are cross-linked with a cross-linking group to the extent of 0.6 to 15% of cross-linking extent as an active ingredient in an amount having a long-lasting analgesic effect and a pharmaceutically acceptable carrier, and an analgesic composition for suppressing a cartilage degeneration caused by arthritic disorders or a composition for suppressing a cartilage degeneration or an inflammation of synovium caused by arthritic disorders each comprising the cross-linked hyaluronic acid derivative and a pharmaceutically acceptable carrier.

First claim

Opening claim text (preview).

The invention claimed is: 1. A solution of a hyaluronic acid derivative in a pharmaceutically acceptable aqueous medium in an amount of 0.1% to 2% by weight based upon the total weight of the solution, the hyaluronic acid derivative comprising cross-linkable groups introduced into some functional groups of hyaluronic acid, the hyaluronic acid derivative having following characteristics: (1) the cross-linkable groups are a residue of cinnamic acid or a cinnamic acid derivative, and…

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What does patent US9301972B2 cover?
The present invention relates to an injection solution for intra-articular administration for treating arthritic disorders comprising a cross-linked hyaluronic acid derivative wherein part of functional groups of a hyaluronic acid are cross-linked with a cross-linking group to the extent of 0.6 to 15% of cross-linking extent as an active ingredient in an amount having a long-lasting analgesic e…
Who is the assignee on this patent?
Seikagaku Kogyo Co Ltd
What technology area does this patent fall under?
Primary CPC classification A61K31/728. Mapped technology areas include Human Necessities.
When was this patent published?
Publication date Tue Apr 05 2016 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).