C23G 1/02
Cleaning or pickling metallic material with solutions or molten salts: with acid
Official title: with acid solutions
C23G1/02 (Cleaning or pickling metallic material with solutions or molten salts: with acid) appears on 1,129 US grants and 1,036 published applications in this corpus.
Search patents in C23G- Granted patents
- 1,129
- Published applications
- 1,036
- Assignees
- 617
- Inventors
- 2,887
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 22 | 0 |
| 1977 | 13 | 0 |
| 1978 | 19 | 0 |
| 1979 | 8 | 0 |
| 1980 | 13 | 0 |
| 1981 | 17 | 0 |
| 1982 | 25 | 0 |
| 1983 | 21 | 0 |
| 1984 | 19 | 0 |
| 1985 | 16 | 0 |
| 1986 | 16 | 0 |
| 1987 | 15 | 0 |
| 1988 | 9 | 0 |
| 1989 | 21 | 0 |
| 1990 | 14 | 0 |
| 1991 | 15 | 0 |
| 1992 | 13 | 0 |
| 1993 | 10 | 0 |
| 1994 | 18 | 0 |
| 1995 | 12 | 0 |
| 1996 | 16 | 0 |
| 1997 | 15 | 0 |
| 1998 | 20 | 0 |
| 1999 | 26 | 0 |
| 2000 | 20 | 0 |
| 2001 | 34 | 8 |
| 2002 | 30 | 32 |
| 2003 | 31 | 32 |
| 2004 | 16 | 40 |
| 2005 | 19 | 45 |
| 2006 | 22 | 30 |
| 2007 | 12 | 27 |
| 2008 | 14 | 29 |
| 2009 | 15 | 35 |
| 2010 | 19 | 26 |
| 2011 | 20 | 27 |
| 2012 | 25 | 20 |
| 2013 | 16 | 32 |
| 2014 | 28 | 29 |
| 2015 | 20 | 41 |
| 2016 | 35 | 42 |
| 2017 | 23 | 50 |
| 2018 | 21 | 60 |
| 2019 | 36 | 54 |
| 2020 | 31 | 57 |
| 2021 | 40 | 36 |
| 2022 | 42 | 73 |
| 2023 | 30 | 77 |
| 2024 | 44 | 52 |
| 2025 | 56 | 47 |
| 2026 | 37 | 35 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Steel sheet with excellent phosphatability and manufacturing method therefor6 Oct 2026US 12,753,458 B2Posco
- Stainless steel having excellent surface electrical conductivity for fuel cell separator and manufacturing method therefor4 Aug 2026US 12,700,597 B2Posco
- Steel sheet with excellent surface quality, and manufacturing method therefor14 Jul 2026US 12,680,142 B2Posco
- Method for producing grain-oriented electrical steel sheet14 Jul 2026US 12,680,149 B2Jfe Steel Corporation
- High-carbon steel sheet having good surface quality and manufacturing method therefor7 Jul 2026US 12,674,220 B2Posco
- High-strength steel sheet and manufacturing method therefor27 Aug 2026US 2026/0250811 A1Jfe Steel Corporation
- High-strength steel sheet and method for manufacturing same27 Aug 2026US 2026/0250812 A1Jfe Steel Corporation
- Steel sheet, member, and part, and methods of producing same27 Aug 2026US 2026/0250813 A1Jfe Steel Corporation
- Systems for treating a metal substrate20 Aug 2026US 2026/0242617 A1PPG Industries Ohio, Inc.
- Non-oriented electrical steel plate and manufacturing method therefor20 Aug 2026US 2026/0242904 A1Baoshan Iron & Steel Co., Ltd.
Most cited
By later US patents
- Thickened acidic aqueous compositions using cross-linked dialkylaminoacrylic microparticles202US 5,100,660 AAllied Colloids Limited · 1992
- Cleaning compositions for removing etching residue and method of using150US 5,334,332 AEKC Technology, Inc. · 1994
- Post clean treatment composition comprising an organic acid and hydroxylamine137US 5,981,454 AEKC Technology, Inc. · 1999
- Implant surface preparation127US 5,876,453 AImplant Innovations, Inc. · 1999
- Implant surface preparation utilizing acid treatment107US 5,603,338 AInnovative Implants, Inc. · 1997