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US 7,247,249 B2Granted
Method of treating razor blade cutting edges
AssigneeThe Gillette Company
InventorHoang Mai Trankiem
Life of this patent
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Abstract
Methods treating razors blade cutting edges having an adherent polyfluorocarbon coated thereon are described. The coated razor blade edges are treated with a solvent, which partially removes the coating from the razor blade edge. Addition of an antioxidant to the solvent improves the effectiveness of the treatment.
Claims39
A method of treating a polyfluorocarbon coated razor blade, comprising:
- contacting a polyfluorocarbon coated razor blade with a solution of a solvent and an antioxidant, thereby partially removing the polyfluorocarbon coating from the razor blade.
A method of treating a polyfluorocarbon coated razor blade, comprising:
- contacting a polyfluorocarbon coated razor blade with a solution of a perfluoroperhydrophenanthrene and a 1/2 ratio of the compounds of formula I and formula II
Dependencies are inferred from the claim text.