Patent ID: 8808786

Claim:
A method of making a medicinal inhalation device comprising: a) forming a non-metal coating on at least a portion of a surface of the device, said coating having at least one functional group; b) applying to at least a portion of a surface of the non-metal coating a composition comprising an at least partially fluorinated compound comprising at least one functional group; and c) allowing at least one functional group of the at least partially fluorinated compound to react with at least one functional group of the non-metal coating to form a covalent bond; and wherein the at least partially fluorinated compound comprising at least one functional group is a polyfluoropolyether silane; and wherein the polyfluoropolyether silane is of Formula Ia: R f [Q-[C(R) 2 —Si(Y) 3-x (R 1a ) x ] y ] z Ia wherein: R f is a monovalent or multivalent polyfluoropolyether segment; Q is an organic divalent or trivalent linking group; each R is independently hydrogen or a C 1-4 alkyl group; each Y is independently a hydrolysable group; R 1a is a C 1-8 alkyl or phenyl group; x is 0 or 1 or 2; y is 1 or 2; and z is 1, 2, 3, or 4.