C21D 9/20
Heat treatment: for blades for skates
Official title: for blades for skates
C21D9/20 (Heat treatment: for blades for skates) appears on 6 US grants and 5 published applications in this corpus.
Search patents in C21D- Granted patents
- 6
- Published applications
- 5
- Assignees
- 5
- Inventors
- 20
- Latest grant
- 8 Jan 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Steel for blades and method for producing the same8 Jan 2019US 10,174,394 B2Hitachi Metals, Ltd.
- Method of manufacturing an aerofoil1 Mar 2011US 7,896,221 B2ROLLS-ROYCE plc
- Ice skate blade produced by pulse plasma nitriding7 Jul 2009US 7,556,700 B2
- Steel alloy for gliding elements22 May 2001US 6,235,237 B1Stahlwerk Ergste Westig GmbH
- Apparatus for treating steel edges of skis and other runner devices20 Apr 1993US 5,204,987 A
- Method for multi-field coupling strengthening of an ice skate blade edge29 Jan 2026US 2026/0027609 A1Avic Manufacturing Technology Institute
- Steel for blades and method for producing the same11 Feb 2016US 2016/0040264 A1Hitachi Metals, Ltd.
- Method for the cohesive connection of two components using integrally formed portions for manipulating said components29 Jan 2015US 2015/0028080 A1Siemens Aktiengesellschaft
- Method of manufacturing an aerofoil28 Oct 2010US 2010/0270360 A1ROLLS-ROYCE plc
- Better ice skate blade30 Jun 2005US 2005/0139290 A1
Most cited
By later US patents
- Apparatus for treating steel edges of skis and other runner devices18US 5,204,987 A1993
- Steel alloy for gliding elements5US 6,235,237 B1Stahlwerk Ergste Westig GmbH · 2001
- Ice skate blade produced by pulse plasma nitriding5US 7,556,700 B22009
- Method of manufacturing an aerofoil3US 7,896,221 B2ROLLS-ROYCE plc · 2011
- Method for the steel edges of skis or the like2US 5,144,109 A1992