C21D 1/08
With flames
Official title: with flames
C21D1/08 (With flames) appears on 16 US grants and 12 published applications in this corpus.
Search patents in C21D- Granted patents
- 16
- Published applications
- 12
- Assignees
- 12
- Inventors
- 35
- Latest grant
- 31 Jan 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 2 | 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 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 3 | 2 |
| 2020 | 0 | 0 |
| 2021 | 1 | 3 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Heating system for drill steel pipe billet and heating method thereof31 Jan 2023US 11,565,294 B2Yanshan University
- Steel sheet temperature control device and temperature control method11 Oct 2022US 11,466,340 B2Jfe Steel Corporation
- Apparatus for microtreatment of iron-based alloy30 Mar 2021US 10,961,598 B2
- Packaging bore for eliminating washout failure24 Dec 2019US 10,514,031 B2American Manufacturing Innovators, Inc.
- Tie strap with hardened integrated rivet for a saw chain5 Feb 2019US 10,195,759 B2Blount, Inc.
- Heating system for drill steel pipe billet and heating method thereof30 Sep 2021US 2021/0299723 A1Yanshan University
- Microtreatment of iron-based alloy, apparatus and method therefor and articles resulting therefrom16 Sep 2021US 2021/0285067 A1
- Steel sheet temperature control device and temperature control method1 Jul 2021US 2021/0198765 A1Jfe Steel Corporation
- Microtreatment of iron-based alloy. apparatus and method therefor and articles resulting therefrom22 Aug 2019US 2019/0256937 A1
- Laser-hardened fillet-rolled crankshaft16 May 2019US 2019/0143398 A1Ford Global Technologies, LLC
Most cited
By later US patents
- Method of controlling warpage in workpiece by selective flame-hardening and vibrations9US 5,252,152 A1993
- Tool steel6US 5,616,187 A1997
- Fabrication process of coated stamped parts3US 10,131,117 B2Arcelormittal Investigacion Y Desarrollo, S.L. · 2018
- Multi-surface flame hardening machine and process2US 5,256,217 ACMI International, Inc. · 1993
- Method and apparatus for monitoring work heating temperature in flame hardening2US 6,432,229 B1Sanyo Machine Works, Ltd. · 2002