C21D 1/613
Gases
Official title: Gases; Liquefied or solidified normally gaseous material
C21D1/613 (Gases) appears on 220 US grants and 269 published applications in this corpus.
Search patents in C21D- Granted patents
- 220
- Published applications
- 269
- Assignees
- 185
- Inventors
- 707
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 6 | 0 |
| 1998 | 5 | 0 |
| 1999 | 7 | 0 |
| 2000 | 5 | 0 |
| 2001 | 7 | 5 |
| 2002 | 11 | 16 |
| 2003 | 6 | 3 |
| 2004 | 5 | 7 |
| 2005 | 2 | 7 |
| 2006 | 3 | 10 |
| 2007 | 3 | 4 |
| 2008 | 3 | 3 |
| 2009 | 5 | 6 |
| 2010 | 6 | 6 |
| 2011 | 1 | 5 |
| 2012 | 1 | 6 |
| 2013 | 4 | 3 |
| 2014 | 4 | 4 |
| 2015 | 2 | 3 |
| 2016 | 4 | 31 |
| 2017 | 5 | 14 |
| 2018 | 12 | 12 |
| 2019 | 20 | 15 |
| 2020 | 6 | 14 |
| 2021 | 12 | 16 |
| 2022 | 11 | 22 |
| 2023 | 10 | 23 |
| 2024 | 14 | 13 |
| 2025 | 10 | 11 |
| 2026 | 9 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Nb microalloyed high strength high hole expansion steel and production method therefor1 Sep 2026US 12,723,289 B2Baoshan Iron & Steel Co., Ltd.
- Strong and ductile medium manganese steel and method of making12 May 2026US 12,624,429 B2The University of Hong Kong
- Tool and manufacturing method of it21 Apr 2026US 12,605,782 B2Seco Tools AB
- Steel sheet for non-oriented electrical steel sheet24 Mar 2026US 12,584,203 B2Nippon Steel Corporation
- High-strength thin-gauge checkered steel plate/strip and manufacturing method therefor10 Mar 2026US 12,571,067 B2Baoshan Iron & Steel Co., Ltd.
- Heat treatment methods for multiphase superalloys24 Sep 2026US 2026/0286454 A1General Electric Company
- Steel for knives20 Aug 2026US 2026/0242886 A1Proterial, Ltd.
- Continuous annealing line, continuous annealing method, method of producing cold-rolled steel sheet, and method of producing coated or plated steel sheet30 Jul 2026US 2026/0218361 A1Jfe Steel Corporation
- Plated steel sheet23 Jul 2026US 2026/0209896 A1Nippon Steel Corporation
- Plated steel sheet23 Jul 2026US 2026/0209900 A1Nippon Steel Corporation
Most cited
By later US patents
- Process and apparatus for heat treatment of workpieces by quenching with gases80US 5,630,322 AALD Vacuum Technologies GmbH · 1997
- Method and means of low temperature treatment of items and materials with cryogenic liquid21US 5,174,122 AApplied Cryogenics, Inc. · 1992
- Process for the cryogenic treatment of metal containing materials20US 5,259,200 ANu-Bit, Inc. · 1993
- Chisels20US 9,085,074 B2Black & Decker Inc. · 2015
- Annealing furnace with an improved cooling section16US 4,398,700 AMidland-Ross Corporation · 1983