Patents by Inventor Steve S. Hahn
Steve S. Hahn has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 9248579Abstract: Razors cartridges including a guard, a cap, and at least two blades with parallel sharpened edges located between the guard and cap are provided. A first blade defines a blade edge nearest the guard and a second blade defines a blade edge nearest the cap. The first blade has a cutter force less than the cutter force of the second blade.Type: GrantFiled: July 16, 2008Date of Patent: February 2, 2016Assignee: The Gillette CompanyInventors: Joseph Allan DePuydt, Steve S. Hahn, John Madeira, Krassimir Grigorov Marchev, Kenneth James Skrobis, Neville Sonnenberg
-
Patent number: 9079321Abstract: A razor blade having a substrate with a cutting edge being defined by a sharpened tip. The substrate has a thickness of between about 1.3 and 1.6 micrometers measured at a distance of four micrometers from the blade tip, a thickness of between about 2.2 and 2.7 micrometers measured at a distance of eight micrometers from the blade tip, a thickness of between about 3.8 and 4.9 micrometers measured at a distance of sixteen micrometers from the blade tip, a ratio of thickness measured at four micrometers from the blade tip to the thickness measured at eight micrometers from the blade tip of at least 0.55 and a ratio of thickness measured at four micrometers from the blade tip to the thickness measured at sixteen micrometers from the blade tip of at least 0.30.Type: GrantFiled: July 16, 2008Date of Patent: July 14, 2015Assignee: The Gillette CompanyInventors: Oliver H. Claus, Joseph Allan DePuydt, Steve S. Hahn, Yongqing Ju, John Madeira, Krassimir Grigorov Marchev, Kenneth James Skrobis, Neville Sonnenberg, Charles Samuel White
-
Patent number: 9027443Abstract: Razors are described herein. In some instances the razors include a safety razor blade unit that includes a guard, a cap, and at least two blades with parallel sharpened edges located between the guard and cap. A first blade defines a blade edge nearer the guard and a second blade defines a blade edge nearer the cap. The first blade has a cutter force greater than the cutter force of the second blade. In some instances the razors provide a comfortable shave having improved closeness.Type: GrantFiled: November 22, 2010Date of Patent: May 12, 2015Assignee: The Gillette CompanyInventors: Andrew Zhuk, Weili Yu, Hoang Mai Trankiem, Neville Sonnenberg, Kevin Leslie Powell, Yiqian Eric Liu, Robert L. Lescanec, Steve S. Hahn, Joseph Allan DePuydt, Cinzia Simonis de Cloke, Alan Crook
-
Publication number: 20110120973Abstract: Razors are described herein. In some instances the razors include a safety razor blade unit comprising a guard, a cap, and at least two blades with parallel sharpened edges located between the guard and cap. A first blade defines a blade edge nearer the guard and a second blade defines a blade edge nearer the cap. The first blade has a cutter force greater than the cutter force of the second blade. In some instances the razors provide a comfortable shave having improved closeness.Type: ApplicationFiled: November 22, 2010Publication date: May 26, 2011Inventors: Andrew Zhuk, Weili Yu, Hoang Mai Trankiem, Neville Sonnenberg, Kevin Leslie Powell, Yiqian Eric Liu, Robert L. Lescanec, Steve S. Hahn, Joseph Allan DePuydt, Cinzia Simonis de Cloke, Alan Crook
-
Patent number: 7882640Abstract: Razors are described herein. In some instances the razors include a safety razor blade unit comprising a guard, a cap, and at least two blades with parallel sharpened edges located between the guard and cap. A first blade defines a blade edge nearer the guard and a second blade defines a blade edge nearer the cap. The first blade has a cutter force greater than the cutter force of the second blade. In some instances the razors provide a comfortable shave having improved closeness.Type: GrantFiled: March 29, 2006Date of Patent: February 8, 2011Assignee: The Gillette CompanyInventors: Andrew Zhuk, Weili Yu, Hoang Mai Trankiem, Neville Sonnenberg, Kevin Leslie Powell, Yiqian Eric Liu, Robert L. Lescanec, Steve S. Hahn, Joseph Allan DePuydt, Cinzia Simonis de Cloke, Alan Crook
-
Publication number: 20100011595Abstract: A razor blade having a substrate with a cutting edge being defined by a sharpened tip. The substrate has a thickness of between about 1.3 and 1.6 micrometers measured at a distance of four micrometers from the blade tip, a thickness of between about 2.2 and 2.7 micrometers measured at a distance of eight micrometers from the blade tip, a thickness of between about 3.8 and 4.9 micrometers measured at a distance of sixteen micrometers from the blade tip, a ratio of thickness measured at four micrometers from the blade tip to the thickness measured at eight micrometers from the blade tip of at least 0.55 and a ratio of thickness measured at four micrometers from the blade tip to the thickness measured at sixteen micrometers from the blade tip of at least 0.30.Type: ApplicationFiled: July 16, 2008Publication date: January 21, 2010Inventors: Oliver H. Claus, Joseph Allan DePuydt, Steve S. Hahn, Yongqing Ju, John Madeira, Krassimir Grigorov Marchev, Kenneth James Skrobis, Neville Sonnenberg, Charles Samuel White
-
Publication number: 20100011590Abstract: Razors cartridges including a guard, a cap, and at least two blades with parallel sharpened edges located between the guard and cap are provided. A first blade defines a blade edge nearest the guard and a second blade defines a blade edge nearest the cap. The first blade has a cutter force less than the cutter force of the second blade.Type: ApplicationFiled: July 16, 2008Publication date: January 21, 2010Inventors: Joseph Allan DePuydt, Steve S. Hahn, John Madeira, Krassimir Grigorov Marchev, Kenneth James Skrobis, Neville Sonnenberg
-
Patent number: 7448135Abstract: Multi-blade razors are provided, having blades with differing properties. In one aspect, a razor is provided that includes a safety razor blade unit comprising a guard, a cap, and first, second and third blades with parallel sharpened edges located between the guard and cap with the first blade closest to the cap, the third blade furthest from the cap, and the second blade disposed between the first and third blades, the blades having first, second and third tip radii, respectively, at least two of the three blades having different tip radii, and at least two of the blades having different coefficients of friction.Type: GrantFiled: March 29, 2006Date of Patent: November 11, 2008Assignee: The Gillette CompanyInventors: Andrew Zhuk, Weili Yu, Hoang Mai Trankiem, Neville Sonnenberg, Kevin L. Powell, Yiqian Eric Liu, Robert L. Lescanec, Steve S. Hahn, Joseph A. DePuydt, Alan Crook, Cinzia Simonis Cloke
-
Publication number: 20070227009Abstract: Razors are described herein. In some instances the razors include a safety razor blade unit comprising a guard, a cap, and at least two blades with parallel sharpened edges located between the guard and cap. A first blade defines a blade edge nearer the guard and a second blade defines a blade edge nearer the cap. The first blade has a cutter force greater than the cutter force of the second blade. In some instances the razors provide a comfortable shave having improved closeness.Type: ApplicationFiled: March 29, 2006Publication date: October 4, 2007Inventors: Andrew Zhuk, Weili Yu, Hoang Mai Trankiem, Neville Sonnenberg, Kevin L. Powell, Yiqian Eric Liu, Robert L. Lescanec, Steve S. Hahn, Joseph A. DePuydt, Cinzia Simonis Cloke
-
Publication number: 20040172832Abstract: A razor blade includes a substrate with a cutting edge and a coating of a carbon-containing material doped, for example, with chromium.Type: ApplicationFiled: March 4, 2003Publication date: September 9, 2004Inventors: Colin Clipstone, Steve S. Hahn, Yiqian Eric Liu, Neville Sonnenberg, Andrew Zhuk
-
Patent number: 5497550Abstract: A shaving system with a blade member with a cutting edge of wedge shape that is defined by main facets with an included facet angle in the range of 10.degree.-17.degree. in the region forty micrometers from the cutting edge. The blade is mounted between leading and trailing skin-engaging surfaces so that the blade tangent angle is less than 20.degree. and the interior main facet of the blade is disposed at an angle of more than 150.degree. to a reference line that extends from the cutting edge of the blade to the skin-engaging point next forward of the blade edge.Type: GrantFiled: February 3, 1994Date of Patent: March 12, 1996Assignee: The Gillette CompanyInventors: Robert A. Trotta, Steve S. Hahn, John Madeira, Chong-ping P. Chou, Lamar E. Brooks
-
Patent number: 5295305Abstract: A razor blade includes a substrate with a wedge-shaped edge, an interlayer of material selected from the group consisting of silicon, silicon carbide, vanadium, tantalum, nickel, niobium, and niobium-molybdenum alloy and alloys of such materials on the tip and flanks of the wedge-shaped edge, the thickness of the interlayer preferably being in the range of about 50-500 angstroms, and a layer of diamond or diamond-like carbon material on the interlayer that preferably has a thickness of about two thousand angstroms and that defines a tip radius of less than about 1000 angstroms.Type: GrantFiled: January 25, 1993Date of Patent: March 22, 1994Assignee: The Gillette CompanyInventors: Steve S. Hahn, John Madeira
-
Patent number: 5232568Abstract: A razor blade includes a substrate with a wedge-shaped edge, a layer of molybdenum on the tip and flanks of the wedge-shaped edge, the thickness of the molybdenum layer preferably being in the range of about 50-500 angstroms, and a layer of diamond or diamond-like material on the molybdenum layer that preferably has a thickness of about 200-2,000 angstroms and that defines a tip radius of less than about 500 angstroms, an aspect ratio in the range of 1:13-3:1, a hardness of at least thirteen gigapascals and an L5 wet wool felt cutter force of less than 0.8 kilogram.Type: GrantFiled: June 24, 1991Date of Patent: August 3, 1993Assignee: The Gillette CompanyInventors: C. Robert Parent, John Madeira, Steve S. Hahn
-
Patent number: 5048191Abstract: A process for forming a razor blade includes the steps of providing a ceramic substrate, mechanically abrading an edge of the ceramic substrate to form a sharpened edge thereon with facets that have an included angle of less than thirty degrees; thermally processing the mechanically abraded edge to reduce surface raggedness and subsurface defects; and sputter-sharpening the sharpened edge to provide supplemental facets that have an included angle of more than forty degrees and define a tip radius of less than five hundred angstroms. The resulting blade exhibit excellent shaving properties.Type: GrantFiled: October 16, 1990Date of Patent: September 17, 1991Assignee: The Gillette CompanyInventor: Steve S. Hahn
-
Patent number: 4122602Abstract: The present invention is concerned with processes for microhoning cutting edges and especially those of razor blades, wherein the edges are subjected to sonic energy and especially ultrasonic energy while said edges are in contact with a slurry or dispersion of abrasive particles which have diameters of less than 3 microns.Type: GrantFiled: June 3, 1977Date of Patent: October 31, 1978Assignee: The Gillette CompanyInventors: Suri A. Sastri, Steve S. Hahn