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US 8,192,507 B1Granted
Supercritical noble gases and coloring methods
AssigneeEmpire Technology Development LLC
InventorsWilliam B. Carlson, Gregory D. Phelan, Philip A. Sullivan
Life of this patent
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Abstract
Coloring compositions including, for example, a supercritical fluid comprising a noble gas in a supercritical state and a colorant within the supercritical fluid are disclosed. For example, the noble gas may be at least one of helium, argon, krypton, neon, xenon and radon. Methods of producing such compositions and methods of coloring an article with such composition are also disclosed.
Claims20
A composition for coloring an article, comprising:
- a supercritical fluid comprising a noble gas in a supercritical state;
- and
- a colorant within the supercritical fluid.
A method of producing a coloring composition, comprising:
- forming a supercritical fluid by increasing at least one of a pressure and a temperature of a noble gas;
- and
- combining a colorant with the supercritical fluid.
A method of coloring an article, comprising:
- combining a colorant with a noble gas in a supercritical state to form a coloring composition;
- and
- subjecting the article to the coloring composition to color the article.
Dependencies are inferred from the claim text.