C23C 22/36
Containing also phosphates
Official title: containing also phosphates
C23C22/36 (Containing also phosphates) appears on 298 US grants and 230 published applications in this corpus.
Search patents in C23C- Granted patents
- 298
- Published applications
- 230
- Assignees
- 116
- Inventors
- 690
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 5 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 11 | 0 |
| 1992 | 7 | 0 |
| 1993 | 11 | 0 |
| 1994 | 7 | 0 |
| 1995 | 14 | 0 |
| 1996 | 5 | 0 |
| 1997 | 6 | 0 |
| 1998 | 9 | 0 |
| 1999 | 16 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 1 |
| 2002 | 10 | 8 |
| 2003 | 10 | 11 |
| 2004 | 12 | 11 |
| 2005 | 3 | 8 |
| 2006 | 2 | 13 |
| 2007 | 0 | 8 |
| 2008 | 3 | 7 |
| 2009 | 3 | 13 |
| 2010 | 5 | 8 |
| 2011 | 3 | 12 |
| 2012 | 8 | 8 |
| 2013 | 6 | 20 |
| 2014 | 12 | 6 |
| 2015 | 8 | 12 |
| 2016 | 8 | 10 |
| 2017 | 11 | 13 |
| 2018 | 9 | 7 |
| 2019 | 7 | 6 |
| 2020 | 7 | 11 |
| 2021 | 2 | 8 |
| 2022 | 6 | 8 |
| 2023 | 5 | 7 |
| 2024 | 4 | 4 |
| 2025 | 8 | 3 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Surface-treated metal sheet29 Sep 2026US 12,747,505 B2Nippon Steel Corporation
- Surface-treated steel24 Feb 2026US 12,559,830 B2Nippon Steel Corporation
- Metal surface-treating agent, and metal material with coating film and method for manufacturing same3 Feb 2026US 12,540,248 B2Nihon Parkerizing Co., Ltd.
- Cr(III) based dry-in-place coating composition for zinc coated steel6 Jan 2026US 12,516,418 B2Henkel AG & Co. KGaA
- Surface-treated steel sheet30 Dec 2025US 12,509,777 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
- Surface-treated steel sheet and method of producing same11 Jun 2026US 2026/0159978 A1Jfe Steel Corporation
- Surface-treated steel sheet and method of producing same11 Jun 2026US 2026/0159979 A1Jfe Steel Corporation
- Surface-treated steel sheet and method of producing same4 Jun 2026US 2026/0152869 A1Jfe Steel Corporation
- Surface-treated steel sheet and method of producing same28 May 2026US 2026/0146333 A1Jfe Steel Corporation
Most cited
By later US patents
- Coating solution for metal surface90US 4,148,670 AAmchem Products, Inc. · 1979
- Composition and process for treating metals64US 5,449,415 AHenkel Corporation · 1995
- Composition and process for treating metals45US 5,427,632 AHenkel Corporation · 1995
- Phosphate coating composition and method of applying a zinc-nickel phosphate coating43US 4,793,867 AChemfil Corporation · 1988
- Conversion coatings for metal surfaces40US 5,380,374 ACircle-Prosco, Inc. · 1995