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US 4,306,993 AGranted
Microcapsules containing perfluoroalkyl pentafluorosulfide
AssigneeMinnesota Mining and Manufacturing Company
InventorsRichard D. Danielson, Robert A. Prokop
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Abstract
Vapor permeable microcapsules filled with volatile perfluoroalkyl pentafluorosulfide and used to tag articles for the detection thereof.
Claims4
Vapor permeable microcapsules containing perfluoroalkyl pentafluorosulfide, the walls of the microcapsules being permeable to vapor of said pentafluorosulfide.
Dependencies are inferred from the claim text.