C21D 9/561
With a controlled atmosphere or vacuum
Official title: {with a controlled atmosphere or vacuum}
C21D9/561 (With a controlled atmosphere or vacuum) appears on 180 US grants and 191 published applications in this corpus.
Search patents in C21D- Granted patents
- 180
- Published applications
- 191
- Assignees
- 105
- Inventors
- 529
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 3 | 2 |
| 2002 | 1 | 0 |
| 2003 | 4 | 3 |
| 2004 | 1 | 3 |
| 2005 | 3 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 4 |
| 2008 | 1 | 1 |
| 2009 | 1 | 6 |
| 2010 | 0 | 5 |
| 2011 | 3 | 1 |
| 2012 | 1 | 7 |
| 2013 | 4 | 11 |
| 2014 | 4 | 5 |
| 2015 | 5 | 20 |
| 2016 | 4 | 10 |
| 2017 | 14 | 8 |
| 2018 | 6 | 11 |
| 2019 | 10 | 15 |
| 2020 | 9 | 20 |
| 2021 | 10 | 5 |
| 2022 | 14 | 8 |
| 2023 | 9 | 14 |
| 2024 | 8 | 12 |
| 2025 | 9 | 11 |
| 2026 | 5 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods of cooling an electrically conductive sheet during transverse flux induction heat treatment19 May 2026US 12,635,041 B2Arconic Technologies LLC
- Device for induction heating of at least one workpiece and method for induction heating of at least one workpiece12 May 2026US 12,624,896 B2Sms Elotherm GmbH
- Direct flame preheating section for a continuous metal strip processing line31 Mar 2026US 12,590,761 B2Fives Stein
- Continuous annealing line, continuous hot-dip galvanizing line, and steel sheet production method10 Mar 2026US 12,571,068 B2Jfe Steel Corporation
- Surface modification of a zinc-based metal coating in a hot-dip coating process10 Feb 2026US 12,545,984 B2ThyssenKrupp Steel Europe AG
- Plated steel sheet23 Jul 2026US 2026/0209896 A1Nippon Steel Corporation
- Plated steel sheet23 Jul 2026US 2026/0209900 A1Nippon Steel Corporation
- Production and processing equipment for oxygen-free copper alloy thick strips and processing method thereof16 Jul 2026US 2026/0199946 A1Jinvi Copper Corporation, Tongling Nonferrous Metals Group Holding Co., Ltd.
- Liquid cooling of a strip running in a continuous line30 Apr 2026US 2026/0117356 A1Fives Stein
- Jet-type direct-fired preheating system26 Mar 2026US 2026/0085374 A1Baoshan Iron & Steel Co., Ltd.
Most cited
By later US patents
- Method and device for plasma treatment of moving metal substrates39US 6,933,460 B22005
- Induction heating device and continuous treatment installation including same37US 5,895,599 ASelas S.A. · 1999
- Apparatus for producing strip of stainless steel31US 5,904,204 ANippon Steel Corporation · 1999
- Vacuum and gas tight enclosure for induction heating system23US 6,693,264 B2Celes · 2004
- Method for continuous annealing of metal strips21US 5,137,586 A1992