Patent ID: 7316741

Claim:
A ceramic colorant in the form of a suspension, the colorant comprising particles of colorant having nanometric dimensions, wherein the suspension contains a solvent selected from the group consisting of diethylene glycol, ethylene glycol, and polyethylene glycol, wherein the suspension includes an appropriate amount of water to facilitate hydrolysis, and wherein the particles of colorant are selected from the group consisting of: M II M III 2 O 4 , where M II is selected from the group consisting of Fe II , Zn, Co, Ni, and Mn, and M III is selected from the group consisting of Fe III , Al, Cr, and Mn; CoAl 2 O 4 ; Ti(Sb,Cr)O 2 ; (Zr,Pr)SiO 4 ; (Zr,V)SiO 4 ; (AlCr) 2 O 3 ; (Al,Cr)MO 3 , where M is selected from the group consisting of Y, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb; Ti(Sb,Ni)O 2 ; (ZrV) 2 ; (Sn,V)O 2 ; CaSn 1-x Cr x SiO 5 , where x is between 0.01 and 0.1; Sn 1-x Cr x O 3-x/2 , where x is between 0.01 and 0.1; Au 0 ; Ag 0 ; and Cu 0 .