C21D 9/24
Heat treatment: for saw blades
Official title: for saw blades
C21D9/24 (Heat treatment: for saw blades) appears on 29 US grants and 28 published applications in this corpus.
Search patents in C21D- Granted patents
- 29
- Published applications
- 28
- Assignees
- 28
- Inventors
- 79
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 2 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 1 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 2 |
| 2017 | 1 | 1 |
| 2018 | 0 | 2 |
| 2019 | 1 | 3 |
| 2020 | 2 | 2 |
| 2021 | 1 | 3 |
| 2022 | 2 | 3 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cutting element for a saw chain and method for the production thereof23 Jun 2026US 12,661,822 B2Voestalpine Precision Strip GmbH
- Manufacture of a stress relieved length of steel having an oxidised surface layer16 Aug 2022US 11,414,738 B2Liberty Performance Steels Limited
- All-steel fitting16 Aug 2022US 11,414,792 B2Groz-Beckert KG
- Cutting blade for an agricultural implement, and method of manufacturing the same13 Jul 2021US 11,060,176 B2Deere & Company
- High-speed tool steel, material for tools, and method for producing material for tools29 Sep 2020US 10,787,719 B2Hitachi Metals, Ltd.
- Cutting element for a saw chain and method for the production thereof11 Aug 2022US 2022/0250273 A1Voestalpine Precision Strip GmbH
- Steel for a Sawing Device14 Jul 2022US 2022/0220575 A1Husqvarna AB
- Method and device for induction hardening16 Jun 2022US 2022/0186332 A1Liebherr-Components Bibearch GmbH
- Cutting blade for an agricultural implement, and method of manufacturing the same29 Apr 2021US 2021/0123127 A1Deere & Company
- Steel For Monolithic And Bimetallic Band Saws For Wood21 Jan 2021US 2021/0017634 A1QSGS Technology Gra?yna Klepuszewska
Most cited
By later US patents
- Coated steel product and process of producing the same55US 3,988,955 A1976
- Laser hardened steel cutting rule21US 6,335,506 B22002
- Stainless steel sheet and method for producing thereof18US 5,496,514 ANKK Corporation · 1996
- Process for hardening cutting edges with an oval shaped plasma beam16US 5,360,495 A1994
- Saw wire16US 8,707,944 B2Nippon Steel & Sumitomo Metal Corporation · 2014