C23C 22/06
Using aqueous acidic solutions with ph less than 6
Official title: using aqueous acidic solutions with pH less than 6
C23C22/06 (Using aqueous acidic solutions with ph less than 6) appears on 1,911 US grants and 1,841 published applications in this corpus.
Search patents in C23C- Granted patents
- 1,911
- Published applications
- 1,841
- Assignees
- 769
- Inventors
- 4,324
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 23 | 0 |
| 1977 | 17 | 0 |
| 1978 | 26 | 0 |
| 1979 | 18 | 0 |
| 1980 | 13 | 0 |
| 1981 | 18 | 0 |
| 1982 | 18 | 0 |
| 1983 | 19 | 0 |
| 1984 | 17 | 0 |
| 1985 | 15 | 0 |
| 1986 | 16 | 0 |
| 1987 | 26 | 0 |
| 1988 | 19 | 0 |
| 1989 | 19 | 0 |
| 1990 | 27 | 0 |
| 1991 | 28 | 0 |
| 1992 | 30 | 0 |
| 1993 | 32 | 0 |
| 1994 | 47 | 0 |
| 1995 | 45 | 0 |
| 1996 | 37 | 0 |
| 1997 | 28 | 0 |
| 1998 | 34 | 0 |
| 1999 | 45 | 0 |
| 2000 | 39 | 0 |
| 2001 | 43 | 9 |
| 2002 | 50 | 38 |
| 2003 | 51 | 79 |
| 2004 | 56 | 72 |
| 2005 | 25 | 55 |
| 2006 | 25 | 55 |
| 2007 | 17 | 47 |
| 2008 | 21 | 52 |
| 2009 | 18 | 64 |
| 2010 | 40 | 61 |
| 2011 | 29 | 80 |
| 2012 | 37 | 67 |
| 2013 | 45 | 65 |
| 2014 | 50 | 57 |
| 2015 | 50 | 80 |
| 2016 | 57 | 73 |
| 2017 | 40 | 74 |
| 2018 | 55 | 89 |
| 2019 | 80 | 90 |
| 2020 | 61 | 89 |
| 2021 | 48 | 81 |
| 2022 | 63 | 132 |
| 2023 | 52 | 106 |
| 2024 | 81 | 89 |
| 2025 | 111 | 81 |
| 2026 | 50 | 56 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C23C 22/34Containing fluorides or complex fluorides729
- C23C 22/07Containing phosphates602
- C23C 22/48Not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates587
- C23C 22/40Containing molybdates, tungstates or vanadates218
- C23C 22/24Containing hexavalent chromium compounds204
- C23C 22/46Containing oxalates71
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Most cited
By later US patents
- Generation of compact alumina passivation layers on aluminum plasma equipment components108US 9,903,020 B2APPLIED Materials.Inc. · 2018
- Conditioned semiconductor system parts107US 9,885,117 B2APPLIED Materials.Inc. · 2018
- Process for producing chalcogenide semiconductors95US 4,642,140 AThe United States of America as represented by the United States Department of Energy · 1987
- Coating solution for metal surface90US 4,148,670 AAmchem Products, Inc. · 1979
- Process for improving the adhesion of polymeric materials to metal surfaces90US 5,869,130 AMac Dermid, Incorporated · 1999