| Novozymes Biopolymer A/S Patent applications |
| Patent application number | Title | Published |
|---|
| 20110319357 | Hyaluronic Acid Derivatives - The present invention relates to the modification of hyaluronic acid (HA) with aryl/alkyl succinic anhydrides (ASA) to produce aryl/alkyl succinic anhydride HA derivatives, to the derivatives as such, and to their applications and uses, particularly in the cosmetic and biomedical industries. The ASA-HA derivatives are expected to have interesting properties that can be used for advanced formulation (bind stronger to the skin compared to non-modified HA), possibly also in delivery systems for actives or drugs by encapsulation (nano/micro capsules) or formation of nano/micro spheres. Further, the low MW ASA-HA derivatives are expected to penetrate the skin more efficiently than non-modified HA of the same MW. | 12-29-2011 |
| 20110257123 | ARYL/ALKYL VINYL SULFONE HYALURONIC ACID DERIVATIVES - A hyaluronic acid derivative, and methods of producing and using said derivative, the derivative comprising n repeating units and having the general structural formula (I), wherein, in at least one repeating unit, one or more of R1, R2, R3, R4 comprises an etherbound aryl/alkyl sulfone having the general structural fomula (II), wherein R comprises an alkyl- or aryl-group, and otherwise R1, R2, R3, R4 are hydroxyl groups, OH. | 10-20-2011 |
| 20100273734 | Derivatives of Hyaluronic Acids - The present invention relates to methods for preparing a derivative of a hyaluronic acid, comprising: (a) mixing a liquid solution comprising the hyaluronic acid and a diamine, a polyamine, or a combination thereof, at a pH suitable to form an imine; (b) reducing the imine to an amine with a reductant at a pH suitable to produce the derivative of the hyaluronic acid; and (c) recovering the derivative of the hyaluronic acid. The present invention also relates to isolated derivatives of a hyaluronic acid, comprising the hyaluronic acid and a diamine, a polyamine, or a combination thereof. | 10-28-2010 |
| 20100210588 | Hyaluronic Acid Linked with a Polymer of an Alpha Hydroxy Acid - The invention concerns a product comprising hyaluronic acid or a salt thereof, wherein the hyaluronic acid has been partially or fully linked or crosslinked with a polymer of an alpha hydroxy acid. The invention also concerns manufacture of the product, uses of the product of the invention in the field of biodegradable plastic materials for the preparation of sanitary and surgical articles, in the pharmaceutical and cosmetic fields; including the various articles made with the same in such fields. | 08-19-2010 |
| 20100190212 | METHOD OF CONTROLLING THE CONTENT OF SELECTED COMPONENT(S) FROM POLYMER(S) USING MOLECULAR SIEVE(S) - The invention provides in a first aspect a method for controlling the content of selected component(s) in one or more polymer(s) by:
| 07-29-2010 |
| 20100136630 | PRODUCTION OF LOW MOLECULAR WEIGHT HYALURONIC ACID - The present invention relates to methods for producing a hyaluronic acid with a desired average molecular weight in the range of 20,000-800,000 Dalton, the methods comprising the steps of:
| 06-03-2010 |
| 20090312283 | BRANCHED HYALURONIC ACID AND METHOD OF MANUFACTURE - A branched hyaluronic acid, wherein the linear backbone comprises hyaluronic acid in which one or more N-Acetyl-Glucosamine has been deacetylated to Glucosamine, with branching sidechain(s) covalently linked to the primary amine(s) of said deacetylated Glucosamine thus forming a secondary amine(s); a precursor for producing said branched hyaluronic acid; and a method for producing said branching hyaluronic acid | 12-17-2009 |
| 20090252810 | Aryl/alkyl Succinic Anhydride-Hyaluronan Derivatives - The present invention relates to the modification of hyaluronic acid (HA) with aryl/alkyl succinic anhydrides (ASA) to produce aryl/alkyl succinic anhydride HA derivatives, to the derivatives as such, and to their applications and uses, particularly in the cosmetic and biomedical industries. The ASA-HA derivatives are expected to have interesting properties that can be used for advanced formulation (bind stronger to the skin compared to non-modified HA), possibly also in delivery systems for actives or drugs by encapsulation (nano/micro capsules) or formation of nano/micro spheres. Further, the low MW ASA-HA derivatives are expected to penetrate the skin more efficiently than non-modified HA of the same MW. | 10-08-2009 |
| 20090118423 | Acrylated Hyaluronic Acid - The present invention relates to an acrylated hyaluronic acid product and to processes for the production thereof. | 05-07-2009 |
| 20080274999 | Hyaluronic Acid Fraction with Moisturizing and Anti-Wrinkle Properties - A moisturizing, cosmetic, or anti-wrinkle product comprising hyaluronic acid or a salt thereof, wherein the hyaluronic acid or salt thereof has an average molecular weight in the range of 0.7-0.9 MDa, compositions comprising said product, and uses of said product. | 11-06-2008 |
