Coating processes – With post-treatment of coating or coating material – Heating or drying
Reexamination Certificate
2005-03-15
2005-03-15
Cameron, Erma (Department: 1762)
Coating processes
With post-treatment of coating or coating material
Heating or drying
Reexamination Certificate
active
06866894
ABSTRACT:
A razor blade including a substrate with a cutting edge defined by a sharpened tip and adjacent facets, a layer of hard coating on the cutting edge, an overcoat layer of a chromium containing material on the layer of hard carbon coating, and an outer layer of polytetrafluoroethylene coating over the overcoat layer. Also disclosed is a method of making a razor blade including providing a substrate with a cutting edge defined by a sharpened tip and adjacent facets, and applying an aqueous solution including polytetrafluoroethylene coating over the sharpened tip to result in an outer layer, the polytetrafluoroethylene having a molecular weight of about 45,000.
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Krytox® LW-1200, Krytox® performance lubricants, Jun. 1996.
Clipstone Colin
Hahn Steve Syng-Hi
McDonough Kevin P.
Paretchan Michael J.
Sonnenberg Neville
Cameron Erma
Fish & Richardson P.C.
The Gillette Company
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