C21D 1/60
Aqueous agents
C21D1/60 (Aqueous agents) appears on 266 US grants and 380 published applications in this corpus.
Search patents in C21D- Granted patents
- 266
- Published applications
- 380
- Assignees
- 198
- Inventors
- 1,099
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 4 |
| 2002 | 6 | 2 |
| 2003 | 3 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 4 |
| 2006 | 0 | 3 |
| 2007 | 2 | 2 |
| 2008 | 0 | 2 |
| 2009 | 4 | 7 |
| 2010 | 4 | 4 |
| 2011 | 3 | 2 |
| 2012 | 2 | 6 |
| 2013 | 2 | 6 |
| 2014 | 1 | 6 |
| 2015 | 5 | 13 |
| 2016 | 4 | 40 |
| 2017 | 12 | 25 |
| 2018 | 9 | 15 |
| 2019 | 29 | 23 |
| 2020 | 15 | 19 |
| 2021 | 24 | 14 |
| 2022 | 15 | 36 |
| 2023 | 8 | 43 |
| 2024 | 9 | 39 |
| 2025 | 26 | 35 |
| 2026 | 31 | 28 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Housing of an induction hardening tool6 Oct 2026US 12,752,288 B2Aktiebolaget Skf
- Carbide refining method of high-carbon high-alloy steel29 Sep 2026US 12,747,488 B2Shanghai Jiaotong University
- Alloy for high-stress gouging abrasion11 Aug 2026US 12,703,903 B2Weir Minerals Australia Ltd.
- Steel plate for pressure vessel with excellent cryogenic toughness, and method of manufacturing same28 Jul 2026US 12,692,573 B2Posco
- Methods for producing locally hardened components30 Jun 2026US 12,668,850 B1Southwest Technology and Engineering Research Institute
- Austenitic stainless steel containing niobium27 Aug 2026US 2026/0250818 A1Doosan Enerbility Co., Ltd.
- Austenitic stainless steel containing tungsten27 Aug 2026US 2026/0250824 A1Doosan Enerbility Co., Ltd.
- Stainless steel clad plate with excellent shape and preparation method thereof20 Aug 2026US 2026/0241428 A1Institute of Research of Iron and Steel, Jiangsu Province/Sha-Steel, Co. Ltd (Cn)
- Compact steel plate continuous quenching machine13 Aug 2026US 2026/0234741 A1Northeastern University
- High-strength steel plate for hydrogen transporting steel pipe, production method therefor, and hydrogen transporting steel pipe13 Aug 2026US 2026/0234742 A1Jfe Steel Corporation
Most cited
By later US patents
- Fire extinguishing composition and method43US 4,398,605 AFire Out Enterprises Company, Inc. · 1983
- Hardfacing process and parts produced thereby24US 9,174,293 B2Caterpillar Inc. · 2015
- Process for the heat treatment of steel20US 4,082,577 AFried. Krupp Huttenwerke AG · 1978
- Process for the controlled cooling of ferrous metal20US 4,087,290 AE. F. Houghton & Co. · 1978
- Polyoxazolines in aqueous quenchants20US 4,486,246 AE. F. Houghton & Co. · 1984