Chitosan-based beads, preparation, compositions and uses thereof

ChangeBridge: Patent Grants - Pharma (A61K)

Published April 7th, 2026

Detected April 7th, 2026

Summary

KIOMED PHARMA has been granted USPTO Patent US12595342B2 for chitosan-based beads comprising a hydrogel matrix with carboxyalkyl chitosan. The patent contains 41 claims covering the composition, preparation methods, and pharmaceutical applications of the technology.

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What changed

KIOMED PHARMA received USPTO Patent US12595342B2 (Kind B2) on April 7, 2026, covering chitosan-based beads and compositions. The 41-claim patent describes carboxyalkyl chitosan hydrogels with glucosamine units crosslinked by covalent bonds for pharmaceutical applications. The patent application (No. 17790180) was filed on November 22, 2021.\n\nPharmaceutical manufacturers and biotech companies developing hydrogel-based drug delivery systems should be aware of this newly granted IP, as it may restrict freedom to operate in this specific technological space. The patent provides KIOMED PHARMA exclusive rights to manufacture and commercialize chitosan-based bead compositions in the United States.

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← USPTO Patent Grants

Chitosan-based beads, and preparation, compositions and uses thereof

Grant US12595342B2 Kind: B2 Apr 07, 2026

Assignee

KIOMED PHARMA

Inventors

Mickaël Chausson, Sandrine Emilia Gautier, Laurence Hermitte, Antoine Rabeux, Guillermo Rocasalbas

Abstract

The invention relates to beads and a composition comprising an aqueous phase comprising a plurality of beads, the beads comprising or consisting in a hydrogel matrix comprising at least one carboxyalkyl chitosan having glucosamine units, N-acetyl-glucosamine units and glucosamine units substituted with a carboxyalkyl group, the carboxyalkyl chitosan being crosslinked by covalent bonds between the carboxyalkyl chitosan chains and/or co-crosslinked by covalent bonds with one or more other polymers. The invention also relates to processes for their preparation and applications thereof.