TABLE 2.

Patented grafted chitosan and chito-oligosaccharide-grafted polymers.

Patent title	Functional group grafted	Patent number	Year	Reference
PEGylated and fatty acid GRFT COS, synthesis method, and application for drug delivery systems	PEG and fatty acid	US 8,466,127 B2	2013	Raizaday et al. (2022)
Amine GRFT CH nanofiber, a method for preparation thereof, and its use in heavy metal adsorption	Amino group	US 9.289,746 B2	2016	Moretton et al. (2012)
Sulfhydrylated cholesterol modified mPEG GRFT CH, preparation method, and application thereof	mPEG	CN111499874B	2020	Bakshi et al. (2020)
Phenylboronic acid GRFT COS derivative, preparation method, and application thereof	Phenylboronic acid	CN113754793A	2020	Kaczmarek et al. (2020)
Phenolic acid GRFT-COS, preparation method, and application of modified waterborne polyurethane of phenolic acid GRFT-COS	Phenolic acid	CN108676108B	2018	Roy et al. (2009)
Preparation method of a cyclodextrin GRFT CH polymer with water pollutant-separating property	Cyclodextrin	CN104530437A	2014	Kai et al. (2018)
A kind of GRFT CH bleeding-stopping dressing with a three-dimensional multi-network and preparation method thereof	Glycerol	CN104258451B	2014	Gao et al. (2020)
Hypromellose GRFT CH and methods of use thereof for sustained drug delivery	Hypromellose	CN107921002B	2016	Purohit et al. (2022a)
Glycolic acid GRFT CH copolymer, preparation method thereof, and application of glycolic acid GRFT CH copolymer used as a scleral buckling material	Glycolic acid	CN102516412B	2011	Parkatzidis et al. (2020)
A kind of partially GRFT COS surfactant and preparation method	N-oleoyl glutamine	CN107081110A	2017	Brocas et al. (2013)