Polymeric Cutting Edge Structures And Method Of Manufacturing Polymeric Cutting Edge Structures
US-2017368703-A1 · Dec 28, 2017 · US
Strengthened razor blade
US9598761B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9598761-B2 |
| Application number | US-47155109-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 26, 2009 |
| Priority date | May 26, 2009 |
| Publication date | Mar 21, 2017 |
| Grant date | Mar 21, 2017 |
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Abstract
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A razor blade including a substrate with a cutting edge, the substrate includes a mixed nitride-substrate interregion disposed at or beneath a surface of the substrate, the mixed nitride-substrate interregion being substantially free of a compound layer.
First claim
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What is claimed is: 1. A razor blade comprising a substrate with a cutting edge, the substrate comprising a mixed nitride-substrate interregion disposed at or beneath a surface of the substrate, the mixed nitride-substrate interregion and the substrate being free of gamma prime or epsilon phases. 2. The razor blade of claim 1 wherein the mixed nitride-substrate interregion consists essentially of a solid solution of nitrogen in the substrate. 3. The razor blade of claim 1 wherein the substrate comprises stainless steel. 4. The razor blade of claim 1 wherein the cutting edge comprises a wedge-shaped tip that has an included angle of less than thirty degrees and a tip radius of less than 1,000 Angstroms. 5. The razor blade of claim 1 further comprising a first coating disposed over the surface of the substrate. 6. The razor blade of claim 5 further comprising a second coating disposed over the first coating, wherein the second coating comprises a fluoropolymer-containing material. 7. The razor blade of claim 1 further comprising a second coating disposed over the surface of the substrate.
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Frequently asked questions
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- What does patent US9598761B2 cover?
- A razor blade including a substrate with a cutting edge, the substrate includes a mixed nitride-substrate interregion disposed at or beneath a surface of the substrate, the mixed nitride-substrate interregion being substantially free of a compound layer.
- Who is the assignee on this patent?
- Marchev Krassimir Grigorov, Madeira John, Gillette Co
- What technology area does this patent fall under?
- Primary CPC classification B26B21/60. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Mar 21 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).