C23F 17/00
Multi-step processes for surface treatment of metallic material involving at least one
Official title: Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25 (coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups C23C2/00 - C23C26/00, or by combinations of methods providedfor in subclasses C23C and C25D, C23C28/00)
C23F17/00 (Multi-step processes for surface treatment of metallic material involving at least one) appears on 215 US grants and 304 published applications in this corpus.
Search patents in C23F- Granted patents
- 215
- Published applications
- 304
- Assignees
- 174
- Inventors
- 789
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 1 |
| 2009 | 2 | 2 |
| 2010 | 1 | 0 |
| 2011 | 1 | 2 |
| 2012 | 0 | 2 |
| 2013 | 1 | 7 |
| 2014 | 5 | 9 |
| 2015 | 2 | 34 |
| 2016 | 8 | 26 |
| 2017 | 20 | 42 |
| 2018 | 14 | 30 |
| 2019 | 30 | 32 |
| 2020 | 26 | 21 |
| 2021 | 31 | 23 |
| 2022 | 18 | 17 |
| 2023 | 18 | 15 |
| 2024 | 14 | 14 |
| 2025 | 14 | 11 |
| 2026 | 6 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Steel sheet for hot press formed member22 Sep 2026US 12,741,447 B2Posco
- Stainless steel for separation plate of polymer electrolyte membrane fuel cell having improved hydrophilic property and corrosion resistance, and manufacturing method therefor25 Aug 2026US 12,719,063 B2Posco
- Anti-cavitation damping composite metal structure for flow passage component2 Jun 2026US 12,644,189 B2Hohai University
- Method for surface treatment24 Mar 2026US 12,584,235 B2Provexa Technology AB
- Coating for aluminum alloy aerostructures24 Feb 2026US 12,560,092 B2Rtx Corporation
- Multi-layer electrode connection structure, on-chip capacitor, and a multi-layer electrode connection method10 Sep 2026US 2026/0271311 A1Jiashan Fudan Research Institute
- Laminate and method for manufacturing circuit board27 Aug 2026US 2026/0255493 A1Arisawa Mfg.Co., Ltd.
- Laminated structure and method for manufacturing the same20 Aug 2026US 2026/0242973 A1Murata Manufacturing Co., Ltd.
- Molded sheet-metal part with improved hardness curve16 Jul 2026US 2026/0201491 A1ThyssenKrupp Steel Europe AG
- Method for producing a nitrided part of an aircraft turbomachine9 Jul 2026US 2026/0193767 A1Safran
Most cited
By later US patents
- Process for producing elevated temperature corrosion resistant metal articles61US 4,145,481 AHowmet Turbine Components Corporation · 1979
- Zero-mode waveguides with non-reflecting walls38US 8,906,670 B2Pacific Bioscience of California, Inc. · 2014
- Curved high temperature alloy sandwich panel with a truss core and fabrication method32US 9,731,471 B2HRL Laboratories, LLC · 2017
- Electrodeposited, nanolaminate coatings and claddings for corrosion protection23US 10,253,419 B2Modumetal, Inc. · 2019
- Tube having strain-hardened inside coating22US 4,641,450 ABalzers Aktiengesellschaft · 1987