C23G 1/081
Solutions containing h2so4
Official title: {solutions containing H2SO4}
C23G1/081 (Solutions containing h2so4) appears on 86 US grants and 110 published applications in this corpus.
Search patents in C23G- Granted patents
- 86
- Published applications
- 110
- Assignees
- 41
- Inventors
- 295
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 1 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 2 |
| 2006 | 2 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 4 |
| 2012 | 1 | 1 |
| 2013 | 1 | 4 |
| 2014 | 4 | 1 |
| 2015 | 2 | 2 |
| 2016 | 3 | 4 |
| 2017 | 2 | 7 |
| 2018 | 2 | 6 |
| 2019 | 2 | 6 |
| 2020 | 2 | 4 |
| 2021 | 8 | 3 |
| 2022 | 6 | 28 |
| 2023 | 4 | 11 |
| 2024 | 12 | 9 |
| 2025 | 18 | 8 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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
- Ferritic stainless steel sheet for current collectors for sulfide-based solid-state batteries, and method for manufacturing same16 Jun 2026US 12,658,454 B2Jfe Steel Corporation
- Method for producing electrical steel sheet7 Apr 2026US 12,595,525 B2Nippon Steel Corporation
- Procedure for finishing stainless steel parts13 Jan 2026US 12,522,945 B2Acondicionamiento Tarrasense
- Method for manufacturing grain-oriented electrical steel sheet6 Aug 2026US 2026/0226576 A1Nippon Steel Corporation
- Method for manufacturing grain-oriented electrical steel sheet30 Jul 2026US 2026/0218346 A1Nippon Steel Corporation
- Grain-oriented electrical steel sheet and manufacturing method therefor9 Jul 2026US 2026/0193749 A1Nippon Steel Corporation
- Forming method for insulation coating of grain oriented electrical steel sheet6 Nov 2025US 2025/0340964 A1Nippon Steel Corporation
- Plated steel sheets for hot press forming having excellent hydrogen brittleness resistance and impact resistance, hot press formed parts, and manufacturing methods thereof16 Oct 2025US 2025/0319509 A1Posco
Most cited
By later US patents
- Methods for cleaning materials45US 4,589,925 AUnion Oil Company of California · 1986
- Hydrogen peroxide pickling of stainless steel12US 5,743,968 AArmco Inc. · 1998
- Method at treatment of metals10US 6,174,383 B1Eka Chemicals AB · 2001
- Method of producing a cold-rolled strip in one pass9US 5,759,307 ABWG Bergwerk- und Walzwerk-Maschinenbau GmbH · 1998
- Hydrogen peroxide pickling of stainless steel8US 5,702,534 AArmco Inc. · 1997