Razor blade technology
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 15, 2005
Grant Date -
May 22, 2003
app pub date -
Jul 10, 2002
filing date -
Feb 29, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
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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