C23F 4/00
Processes for removing metallic material from surfaces, not provided for in group
Official title: Processes for removing metallic material from surfaces, not provided for in group C23F1/00 or C23F3/00
C23F4/00 (Processes for removing metallic material from surfaces, not provided for in group) appears on 916 US grants and 837 published applications in this corpus.
Search patents in C23F- Granted patents
- 916
- Published applications
- 837
- Assignees
- 397
- Inventors
- 2,150
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 12 | 0 |
| 1981 | 12 | 0 |
| 1982 | 11 | 0 |
| 1983 | 23 | 0 |
| 1984 | 18 | 0 |
| 1985 | 12 | 0 |
| 1986 | 9 | 0 |
| 1987 | 8 | 0 |
| 1988 | 5 | 0 |
| 1989 | 16 | 0 |
| 1990 | 10 | 0 |
| 1991 | 9 | 0 |
| 1992 | 13 | 0 |
| 1993 | 8 | 0 |
| 1994 | 10 | 0 |
| 1995 | 10 | 0 |
| 1996 | 8 | 0 |
| 1997 | 8 | 0 |
| 1998 | 15 | 0 |
| 1999 | 15 | 0 |
| 2000 | 21 | 0 |
| 2001 | 26 | 13 |
| 2002 | 21 | 33 |
| 2003 | 23 | 34 |
| 2004 | 24 | 52 |
| 2005 | 30 | 38 |
| 2006 | 20 | 71 |
| 2007 | 15 | 47 |
| 2008 | 16 | 25 |
| 2009 | 20 | 22 |
| 2010 | 33 | 35 |
| 2011 | 17 | 19 |
| 2012 | 29 | 27 |
| 2013 | 18 | 28 |
| 2014 | 24 | 35 |
| 2015 | 34 | 60 |
| 2016 | 48 | 55 |
| 2017 | 38 | 32 |
| 2018 | 38 | 39 |
| 2019 | 38 | 43 |
| 2020 | 43 | 21 |
| 2021 | 18 | 27 |
| 2022 | 24 | 24 |
| 2023 | 17 | 17 |
| 2024 | 18 | 14 |
| 2025 | 15 | 14 |
| 2026 | 7 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for forming groove on metal strip surface and method for manufacturing grain-oriented electrical steel sheet30 Jun 2026US 12,668,883 B2Jfe Steel Corporation
- Anti-cavitation damping composite metal structure for flow passage component2 Jun 2026US 12,644,189 B2Hohai University
- Control method for sidewall contamination of MRAM magnetic tunnel26 May 2026US 12,642,005 B2Jiangsu Leuven Instruments Co. Ltd
- Metal member, metal-resin joined body, and method for manufacturing same12 May 2026US 12,623,433 B2Nippon Light Metal Company, Ltd.
- Reduction treatment method10 Feb 2026US 12,544,808 B2Ushio Denki Kabushiki Kaisha
- A system for use in processing a plurality of bodies of polycrystalline diamond material30 Jul 2026US 2026/0216617 A1Element Six (UK) Limited
- Method of processing a body of polycrystalline diamond material30 Jul 2026US 2026/0217619 A1Element Six (UK) Limited
- A method for processing a body of polycrystalline diamond material30 Jul 2026US 2026/0218385 A1Element Six (UK) Limited
- Method of processing a plurality of bodies of polycrystalline diamond material30 Jul 2026US 2026/0218386 A1Element Six (UK) Limited
- Apparatus for use in processing a body of polycrystalline diamond material23 Jul 2026US 2026/0209951 A1Element Six (UK) Limited
Most cited
By later US patents
- Methods for etch of metal and metal-oxide films564US 9,064,815 B2APPLIED Materials.Inc. · 2015
- Oxide and metal removal562US 9,309,598 B2APPLIED Materials.Inc. · 2016
- Etching of nano-imprint templates using an etch reactor522US 7,955,516 B2APPLIED Materials.Inc. · 2011
- Surface modification of medical implants400US 6,033,582 AEtex Corporation · 2000
- Selective thin film etch process297US 4,793,897 AAPPLIED Materials.Inc. · 1988