C23C 22/74
For obtaining burned-in conversion coatings
Official title: for obtaining burned-in conversion coatings
C23C22/74 (For obtaining burned-in conversion coatings) appears on 359 US grants and 329 published applications in this corpus.
Search patents in C23C- Granted patents
- 359
- Published applications
- 329
- Assignees
- 163
- Inventors
- 749
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 5 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 7 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 9 | 0 |
| 1986 | 7 | 0 |
| 1987 | 6 | 0 |
| 1988 | 5 | 0 |
| 1989 | 14 | 0 |
| 1990 | 11 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 6 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 1 |
| 2002 | 5 | 7 |
| 2003 | 9 | 3 |
| 2004 | 1 | 11 |
| 2005 | 1 | 6 |
| 2006 | 5 | 14 |
| 2007 | 2 | 4 |
| 2008 | 3 | 10 |
| 2009 | 4 | 15 |
| 2010 | 11 | 18 |
| 2011 | 4 | 15 |
| 2012 | 10 | 8 |
| 2013 | 13 | 10 |
| 2014 | 7 | 13 |
| 2015 | 5 | 14 |
| 2016 | 7 | 14 |
| 2017 | 6 | 11 |
| 2018 | 13 | 14 |
| 2019 | 11 | 7 |
| 2020 | 8 | 12 |
| 2021 | 7 | 16 |
| 2022 | 14 | 44 |
| 2023 | 9 | 14 |
| 2024 | 26 | 19 |
| 2025 | 35 | 21 |
| 2026 | 8 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Grain-oriented electrical steel sheet and manufacturing method therefor25 Aug 2026US 12,716,134 B2Nippon Steel Corporation
- 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
- Method for producing grain-oriented electrical steel sheet14 Jul 2026US 12,680,149 B2Jfe Steel Corporation
- Grain-oriented electrical steel sheet and method for forming insulating coating16 Jun 2026US 12,655,502 B2Nippon Steel Corporation
- Grain-oriented electrical steel sheet and method for forming insulating coating16 Jun 2026US 12,655,503 B2Nippon Steel Corporation
- Grain-oriented electrical steel sheet and method for forming insulating coating20 Aug 2026US 2026/0242905 A1Nippon Steel Corporation
- 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
- Composition for forming insulating film on electrical steel sheet, electrical steel sheet, and method for manufacturing electrical steel sheet23 Jul 2026US 2026/0209946 A1Posco
- Chemical conversion agent23 Jul 2026US 2026/0209948 A1Nihon Parkerizing Co., Ltd.
- Method of producing electrical steel sheet with insulating coating16 Jul 2026US 2026/0204463 A1Jfe Steel Corporation
Most cited
By later US patents
- High temperature amorphous composition based on aluminum phosphate76US 6,461,415 B1Applied Thin Films, Inc. · 2002
- Metallic coated steel having a siloxane film providing temporary corrosion protection and method therefor60US 5,292,549 AArmco Inc. · 1994
- Thick coating compositions50US 4,617,056 ASermatech International, Inc. · 1986
- Coating composition44US 4,110,117 AMobil Oil Corporation · 1978
- Spherical aluminum particles in coatings44US 4,537,632 ASermatech International, Inc. · 1985