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US 2007/0166399 A1Published application
Silver-containing antimicrobial articles and methods of manufacture
Assignee3M Innovative Properties Company
InventorsScott Burton, David Holm
Life of this patent
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Abstract
A silver composition comprising silver sulfate, methods of making antimicrobial articles, particularly packaged antimicrobial articles, methods of whitening antimicrobial articles, and packaged antimicrobial articles.
Claims50
A method of making a packaged antimicrobial article, the method comprising:
- preparing a composition comprising silver sulfate;
- coating the silver sulfate composition on a substrate;
- drying the coated substrate to form an antimicrobial article;
- placing the antimicrobial article in packaging material having a volatile organic content of no greater than 100 mg per square meter;
- and
- sealing the packaging material with the antimicrobial article therein.
3 more elements
A packaged antimicrobial article, comprising:
- an antimicrobial article comprising a substrate coated with a silver sulfate composition;
- and
- packaging having the antimicrobial article sealed therein;
- wherein the packaging comprises material having a volatile organic content of no greater than 100 mg per square meter.
1 more element
A method of whitening at least a portion of an antimicrobial article, the method comprising:
- providing a packaged antimicrobial article having at least a portion colored other than white, wherein the article comprises a substrate coated with a silver salt composition comprising at least a portion of the silver in the zero-valent state, and wherein the antimicrobial article is sealed within packaging comprising material having a volatile organic content of greater than 100 mg per square meter;
- and
- irradiating the packaged antimicrobial article to whiten at least a portion of the antimicrobial article.
Dependencies are inferred from the claim text.