C21D 8/0278
Involving a particular surface treatment
Official title: involving a particular surface treatment (C21D8/0294 takes precedence)
C21D8/0278 (Involving a particular surface treatment) appears on 545 US grants and 848 published applications in this corpus.
Search patents in C21D- Granted patents
- 545
- Published applications
- 848
- Assignees
- 127
- Inventors
- 1,450
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 4 | 0 |
| 2001 | 7 | 5 |
| 2002 | 4 | 6 |
| 2003 | 9 | 12 |
| 2004 | 12 | 15 |
| 2005 | 5 | 11 |
| 2006 | 2 | 5 |
| 2007 | 4 | 4 |
| 2008 | 4 | 6 |
| 2009 | 2 | 3 |
| 2010 | 5 | 7 |
| 2011 | 4 | 11 |
| 2012 | 3 | 7 |
| 2013 | 4 | 22 |
| 2014 | 12 | 23 |
| 2015 | 7 | 37 |
| 2016 | 11 | 42 |
| 2017 | 35 | 62 |
| 2018 | 22 | 39 |
| 2019 | 51 | 47 |
| 2020 | 44 | 30 |
| 2021 | 31 | 23 |
| 2022 | 28 | 48 |
| 2023 | 26 | 104 |
| 2024 | 40 | 119 |
| 2025 | 79 | 78 |
| 2026 | 62 | 82 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Steel sheet, member, and method for producing steel sheet, and method for producing member15 Sep 2026US 12,735,762 B2Jfe Steel Corporation
- Zinc or zinc-alloy coated strip or steel with improved zinc adhesion15 Sep 2026US 12,735,780 B2voestalpine Stahl GmbH
- TWIP steel sheet having an austenitic matrix8 Sep 2026US 12,729,409 B2ArcelorMittal
- Method for producing a steel sheet having excellent processability before hot forming8 Sep 2026US 12,729,413 B2ArcelorMittal
- Steel sheet and plated steel sheet8 Sep 2026US 12,729,420 B2Nippon Steel Corporation
- A cold rolled martensitic steel and a method of martensitic steel thereof8 Oct 2026US 2026/0308706 A1
- Hydrogen induced cracking-resistant cold-rolled hot-dip galvanized ultra-high-strength dual-phase steel and manufacturing method therefor8 Oct 2026US 2026/0308732 A1Baoshan Iron & Steel Co., Ltd.
- High strength steel sheet, high strength coated steel sheet, methods for producing the same, and member1 Oct 2026US 2026/0297712 A1Jfe Steel Corporation
- Coated steel sheet, member, and methods for producing the same1 Oct 2026US 2026/0297713 A1Jfe Steel Corporation
- Steel sheet and plated steel sheet1 Oct 2026US 2026/0297714 A1Nippon Steel Corporation
Most cited
By later US patents
- Coated hot- and cold-rolled steel sheet comprising a very high resistance after thermal treatment151US 6,296,805 B1Sollac · 2001
- Method for hot shaping a workpiece and agent for reducing the heat emission51US 8,685,298 B2Boehler Schmiedetechnik GmbH & Co KG · 2014
- Process for the manufacture of a part with very high mechanical properties, formed by stamping of a strip of rolled steel sheet and more particularly hot rolled and coated50US 6,564,604 B2Unisor · 2003
- High strength galvanized steel plate excellent in adhesion of plated metal and formability in press working and high strength alloy galvanized steel plate and method for production thereof31US 6,517,955 B1Nippon Steel Corporation · 2003
- High tensile hot-dip zinc-coated steel plate excellent in ductility and method for production thereof27US 6,423,426 B1Kawasaki Steel Corporation · 2002