C23C 28/3225
With at least one zinc-based layer
Official title: {with at least one zinc-based layer}
C23C28/3225 (With at least one zinc-based layer) appears on 221 US grants and 276 published applications in this corpus.
Search patents in C23C- Granted patents
- 221
- Published applications
- 276
- Assignees
- 115
- Inventors
- 702
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 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 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 2 |
| 2002 | 5 | 1 |
| 2003 | 8 | 7 |
| 2004 | 6 | 6 |
| 2005 | 2 | 9 |
| 2006 | 5 | 3 |
| 2007 | 2 | 4 |
| 2008 | 2 | 5 |
| 2009 | 3 | 5 |
| 2010 | 4 | 7 |
| 2011 | 3 | 4 |
| 2012 | 2 | 7 |
| 2013 | 0 | 5 |
| 2014 | 4 | 9 |
| 2015 | 2 | 7 |
| 2016 | 1 | 10 |
| 2017 | 7 | 11 |
| 2018 | 4 | 19 |
| 2019 | 10 | 7 |
| 2020 | 14 | 21 |
| 2021 | 17 | 13 |
| 2022 | 19 | 23 |
| 2023 | 16 | 30 |
| 2024 | 17 | 26 |
| 2025 | 24 | 17 |
| 2026 | 13 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Surface modifying method for galvanized steel sheet21 Jul 2026US 12,686,909 B2Posco
- Anti-corrosion structure anchor19 May 2026US 12,630,991 B1USA Intellectual Property Holding, Inc.
- Manufacturing method for plated steel material having excellent adhesion to plating and corrosion resistance5 May 2026US 12,618,139 B2Posco
- Steel sheet and plated steel sheet7 Apr 2026US 12,595,538 B2Nippon Steel Corporation
- Plated steel material10 Mar 2026US 12,571,074 B2Nippon Steel Corporation
- Method for the Corrosion-Protective Pretreatment of Components Comprising Surfaces of Zinc-Magnesium Hot-Dip Coated Steel8 Oct 2026US 2026/0308768 A1Henkel AG & Co. KGaA
- A method to produce press hardened parts at high productivity6 Aug 2026US 2026/0226571 A1
- Plated steel sheet6 Aug 2026US 2026/0226600 A1Nippon Steel Corporation
- Zn-al-mg coated steel sheet23 Jul 2026US 2026/0209923 A1Jfe Steel Corporation
- Chemical conversion agent23 Jul 2026US 2026/0209948 A1Nihon Parkerizing Co., Ltd.
Most cited
By later US patents
- Threaded joint for steel pipes49US 6,659,509 B2Sumitomo Metal Industries, Ltd. · 2003
- Composite zinc- or zinc alloy-electroplated metal sheet and method for the production thereof34US 5,618,634 ASumitomo Metal Industries, Ltd. · 1997
- Coated steel sheet and method for manufacturing the same32US 6,610,422 B1NKK Corporation · 2003
- Coated metal fastener26US 4,964,774 AIllinois Tool Works Inc. · 1990
- Fretting and whisker resistant coating system and method24US 7,391,116 B2GBC Metals, LLC · 2008