The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 15, 2005
Filed:
Jul. 10, 2002
Hoang Mai Trankiem, Plymouth, MA (US);
Michael J. Paretchan, North Weymouth, MA (US);
Colin Clipstone, Weston, MA (US);
Steve Syng-hi Hahn, Wellesley, MA (US);
Neville Sonnenberg, Newton, MA (US);
Charles White, Lynnfield, MA (US);
Andrew Zhuk, Action, MA (US);
Kevin P. Mcdonough, West Roxbury, MA (US);
Hoang Mai Trankiem, Plymouth, MA (US);
Michael J. Paretchan, North Weymouth, MA (US);
Colin Clipstone, Weston, MA (US);
Steve Syng-Hi Hahn, Wellesley, MA (US);
Neville Sonnenberg, Newton, MA (US);
Charles White, Lynnfield, MA (US);
Andrew Zhuk, Action, MA (US);
Kevin P. McDonough, West Roxbury, MA (US);
The Gillette Company, Boston, MA (US);
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.