C23C 22/73
Chemical surface treatment of metallic material by reaction of the surface with
Official title: characterised by the process
C23C22/73 (Chemical surface treatment of metallic material by reaction of the surface with) appears on 759 US grants and 797 published applications in this corpus.
Search patents in C23C- Granted patents
- 759
- Published applications
- 797
- Assignees
- 390
- Inventors
- 1,986
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 19 | 0 |
| 1977 | 9 | 0 |
| 1978 | 8 | 0 |
| 1979 | 1 | 0 |
| 1980 | 8 | 0 |
| 1981 | 9 | 0 |
| 1982 | 12 | 0 |
| 1983 | 6 | 0 |
| 1984 | 10 | 0 |
| 1985 | 16 | 0 |
| 1986 | 13 | 0 |
| 1987 | 11 | 0 |
| 1988 | 9 | 0 |
| 1989 | 22 | 0 |
| 1990 | 16 | 0 |
| 1991 | 8 | 0 |
| 1992 | 12 | 0 |
| 1993 | 6 | 0 |
| 1994 | 8 | 0 |
| 1995 | 10 | 0 |
| 1996 | 6 | 0 |
| 1997 | 9 | 0 |
| 1998 | 5 | 0 |
| 1999 | 9 | 0 |
| 2000 | 11 | 0 |
| 2001 | 6 | 4 |
| 2002 | 12 | 14 |
| 2003 | 16 | 14 |
| 2004 | 7 | 23 |
| 2005 | 5 | 16 |
| 2006 | 7 | 22 |
| 2007 | 6 | 10 |
| 2008 | 5 | 17 |
| 2009 | 6 | 24 |
| 2010 | 17 | 27 |
| 2011 | 9 | 28 |
| 2012 | 14 | 14 |
| 2013 | 14 | 28 |
| 2014 | 18 | 33 |
| 2015 | 11 | 50 |
| 2016 | 30 | 41 |
| 2017 | 24 | 43 |
| 2018 | 29 | 36 |
| 2019 | 35 | 31 |
| 2020 | 21 | 47 |
| 2021 | 16 | 41 |
| 2022 | 40 | 82 |
| 2023 | 24 | 42 |
| 2024 | 49 | 49 |
| 2025 | 65 | 39 |
| 2026 | 20 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Continuous coil pretreatment process6 Oct 2026US 12,753,515 B2Arconic Technologies LLC
- Grain-oriented electrical steel sheet and manufacturing method therefor25 Aug 2026US 12,716,134 B2Nippon Steel Corporation
- 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
- Method for coating zinc die-cast parts, multi-layered coating for the protection of zinc die-cast parts, and coated zinc die-cast part4 Aug 2026US 12,698,564 B2Fnt Co., Ltd.
- Electrical steel sheet having insulating coating, method for producing the same, transformer core and transformer using the electrical steel sheet, and method for reducing dielectric loss in transformer4 Aug 2026US 12,700,528 B2Jfe Steel Corporation
- Continuous coil pretreatment process8 Oct 2026US 2026/0308766 A1Arconic Technologies LLC
- Phosphonate-free, aqueous pickling compositions and their use27 Aug 2026US 2026/0250850 A1Chemetall GmbH
- Grain-oriented electrical steel sheet and method for forming insulating coating20 Aug 2026US 2026/0242905 A1Nippon Steel Corporation
- Compositions, systems, and methods for treating a substrate6 Aug 2026US 2026/0226371 A1PPG Industries Ohio, Inc.
- Grain-oriented electrical steel sheet and method for forming intermediate layer and insulating coating included in grain-oriented electrical steel sheet6 Aug 2026US 2026/0226574 A1Nippon Steel Corporation
Most cited
By later US patents
- High temperature amorphous composition based on aluminum phosphate76US 6,461,415 B1Applied Thin Films, Inc. · 2002
- Chemical process control system62US 4,886,590 AMan-Gill Chemical Company · 1989
- Metallic coated steel having a siloxane film providing temporary corrosion protection and method therefor60US 5,292,549 AArmco Inc. · 1994
- Process for making bioactive coatings on osseous prostheses, and prostheses thus obtained56US 4,366,183 ASociete Europeene de Propulsion · 1982
- Coating with optical taggent52US 6,410,926 B1PPG Industries Ohio, Inc. · 2002