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:
Jan. 25, 2022
Filed:
Nov. 13, 2015
The Gillette Company, Boston, MA (US);
Kenneth James Skrobis, Maynard, MA (US);
Ming Laura Xu, Natick, MA (US);
Yongqing Ju, Medfield, MA (US);
Bin Shen, Allston, MA (US);
Matthew Robert Stone, Oxford, MA (US);
The Gillette Company LLC, Boston, MA (US);
Abstract
A razor blade having a substrate with a cutting edge being defined by a sharpened tip is provided where the substrate is comprised of a molybdenum (Mo) content of about 1.6% to about 5% by weight of composition and thicknesses of 1.60-1.75 μm and 9.25-10.00 μm measured at a distance of 4 and 40 μm from the blade tip, respectively. This thickness ratio is between 0.165-0.185. The substrate thickness is about 2.70-3.00 μm at 8 μm from the blade tip, about 4.44-5.00 μm at 16 μm from the blade tip with a thickness ratio measured at 4 μm and 8 μm between 0.56-0.62, and a thickness ratio measured at 4 μm and 16 μm between 0.32-0.40. The edge shape may be defined by equation w=adwith 'a' between 0.50-0.62 and 'n' between 0.76-0.80. A semi-included angle less than 7° is measured at a distance of 40 μm or greater from the blade tip. This substrate will have substantially no cracks.