Patent · US Active

Method of preparing a composition based on hyaluronic acid

US9822223B2 · kind B2 · utility

1Cited by

3References

11Claims

0Family size

Assignee

Merz Pharma GmbH & Co. KGaA · DE

Inventors

Heiko Barg · Speyer, DE
Josef Friedrich
Wolfgang Liebetrau · Friedberg, DE
Robert Voigts · Milwaukee, US
Tim Stephen Ligman · Mundelein, US

Key dates

Filing date	Jun 14, 2013
Grant date	Nov 21, 2017
Priority date	—
Expiry date	Oct 4, 2033

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2205/02
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The invention relates to a method of preparing a composition, the composition comprising a crosslinked first polymer, optionally a second polymer, which may be crosslinked or non-crosslinked, and water, wherein the first and the second polymer are selected from a polysaccharide, comprising at least steps (i) to (iv):

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.