G - Physics – 01 – N
Patent
G - Physics
01
N
31/105
G01N 31/22 (2006.01) A61L 2/28 (2006.01) C09D 11/00 (2006.01)
Patent
CA 1336225
An ink formulation which when printed on a substrate capable of undergoing a visual change upon being subjected to steam sterilization and which undergoes no visible change or a different visual change upon being subjected to conditions milder than steam sterilization, the formulation comprising a binder and a visual change component in which comprises: (i) a sulphur-containing compound capable of decomposition to yield a metal sulphide under steam sterilization conditions or, (ii) the precursors of such a sulphur-containing compound which will yield said sulphur-containing compound under aqueous conditions.
559912
Douglas Malcolm Frederick
Robic
The Minnesota Mining & Manufacturing Company
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