C23C 4/02
Pretreatment of the material to be coated
Official title: Pretreatment of the material to be coated, e.g. for coating on selected surface areas
C23C4/02 (Pretreatment of the material to be coated) appears on 1,124 US grants and 1,348 published applications in this corpus.
Search patents in C23C- Granted patents
- 1,124
- Published applications
- 1,348
- Assignees
- 685
- Inventors
- 3,262
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 6 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 8 | 0 |
| 1985 | 4 | 0 |
| 1986 | 14 | 0 |
| 1987 | 18 | 0 |
| 1988 | 12 | 0 |
| 1989 | 17 | 0 |
| 1990 | 10 | 0 |
| 1991 | 8 | 0 |
| 1992 | 13 | 0 |
| 1993 | 11 | 0 |
| 1994 | 19 | 0 |
| 1995 | 19 | 0 |
| 1996 | 20 | 0 |
| 1997 | 14 | 0 |
| 1998 | 29 | 0 |
| 1999 | 27 | 0 |
| 2000 | 30 | 0 |
| 2001 | 42 | 11 |
| 2002 | 32 | 30 |
| 2003 | 28 | 48 |
| 2004 | 31 | 53 |
| 2005 | 30 | 72 |
| 2006 | 18 | 55 |
| 2007 | 23 | 58 |
| 2008 | 28 | 66 |
| 2009 | 32 | 53 |
| 2010 | 24 | 53 |
| 2011 | 28 | 46 |
| 2012 | 26 | 44 |
| 2013 | 27 | 48 |
| 2014 | 26 | 61 |
| 2015 | 26 | 57 |
| 2016 | 23 | 78 |
| 2017 | 35 | 52 |
| 2018 | 40 | 57 |
| 2019 | 42 | 62 |
| 2020 | 44 | 64 |
| 2021 | 40 | 67 |
| 2022 | 33 | 41 |
| 2023 | 43 | 56 |
| 2024 | 33 | 51 |
| 2025 | 38 | 38 |
| 2026 | 20 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Fully-automatic aluminum thermal-spraying corrosion prevention production line based on robots and visual recognition29 Sep 2026US 12,746,631 B2Guizhou Power Grid Company Limited
- Metallic coating process for combustor panels using a barrel configuration1 Sep 2026US 12,723,302 B2Rtx Corporation
- Hydraulic devices including coated surfaces25 Aug 2026US 12,716,119 B2Maxterial, Inc.
- Resin molded body25 Aug 2026US 12,716,122 B2Panasonic Housing Solutions Co., Ltd.
- Rare-earth oxide coatings for refractory alloys, methods of manufacturethereof and articles comprising the same6 Aug 2026US 2026/0226602 A1University of Virginia Patent Foundation
- Cold spraying coating onto turbine engine component30 Jul 2026US 2026/0218383 A1Rtx Corporation
- Cold spraying coating onto turbine engine component30 Jul 2026US 2026/0218384 A1Rtx Corporation
- Solar collection energy storage and energy conversion or chemical conversion systems23 Jul 2026US 2026/0210583 A1
- Pneumatic devices including surface coatings9 Jul 2026US 2026/0193747 A1Maxterial, Inc.
Most cited
By later US patents
- Method for coating internal surface of plasma processing chamber393US 6,875,477 B2Hitachi High-Technologies Corporation · 2005
- Low contamination components for semiconductor processing apparatus and methods for making components368US 8,318,327 B2Lam Research Corporation · 2012
- Surgical implant having a graded porous coating343US 4,542,539 AArtech · 1985
- Laser-produced porous surface342US 7,537,664 B2Howmedica Osteonics Corp. · 2009
- Laser-produced porous surface266US 8,728,387 B2Howmedica Osteonics Corp. · 2014