C04B 41/91
Involving the removal of part of the materials of the treated articles
Official title: involving the removal of part of the materials of the treated articles, e.g. etching
C04B41/91 (Involving the removal of part of the materials of the treated articles) appears on 367 US grants and 329 published applications in this corpus.
Search patents in C04B- Granted patents
- 367
- Published applications
- 329
- Assignees
- 267
- Inventors
- 1,053
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 7 | 0 |
| 1987 | 6 | 0 |
| 1988 | 3 | 0 |
| 1989 | 11 | 0 |
| 1990 | 4 | 0 |
| 1991 | 14 | 0 |
| 1992 | 1 | 0 |
| 1993 | 15 | 0 |
| 1994 | 16 | 0 |
| 1995 | 7 | 0 |
| 1996 | 5 | 0 |
| 1997 | 13 | 0 |
| 1998 | 10 | 0 |
| 1999 | 9 | 0 |
| 2000 | 7 | 0 |
| 2001 | 5 | 5 |
| 2002 | 5 | 13 |
| 2003 | 10 | 9 |
| 2004 | 6 | 8 |
| 2005 | 7 | 8 |
| 2006 | 3 | 8 |
| 2007 | 5 | 4 |
| 2008 | 0 | 15 |
| 2009 | 4 | 14 |
| 2010 | 6 | 5 |
| 2011 | 9 | 8 |
| 2012 | 5 | 2 |
| 2013 | 6 | 4 |
| 2014 | 6 | 8 |
| 2015 | 2 | 17 |
| 2016 | 14 | 8 |
| 2017 | 2 | 11 |
| 2018 | 8 | 13 |
| 2019 | 9 | 11 |
| 2020 | 13 | 17 |
| 2021 | 12 | 15 |
| 2022 | 8 | 17 |
| 2023 | 12 | 26 |
| 2024 | 14 | 36 |
| 2025 | 15 | 29 |
| 2026 | 20 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Organometallic compounds for the deposition of high purity tin oxide and dry etching of the tin oxide films and deposition reactors16 Jun 2026US 12,655,164 B2Seastar Chemicals Ulc
- Thermally guided chemical etching of a substrate and real-time monitoring thereof9 Jun 2026US 12,652,988 B2Momentum Optics LLC
- Method for producing ceramic tiles2 Jun 2026US 12,643,834 B2Marazzi Group SRL
- Material surface treatment equipment, material surface treatment method and silicon carbide material surface treatment method19 May 2026US 12,630,481 B2National Central University
- Method of making a shaped tool component12 May 2026US 12,623,974 B2Element Six (UK) Limited
- Methods for coating removal17 Sep 2026US 2026/0274766 A1General Electric Company
- Laser etched ceramic-containing material13 Aug 2026US 2026/0233339 A1Rtx Corporation
- Dust-free insulation material and method for producing same13 Aug 2026US 2026/0234061 A1Joong-Il Materials Inc.
- Method for producing recycled zirconia13 Aug 2026US 2026/0234067 A1National Institute for Materials Science
- Ceramic matrix composite article and method of making the same13 Aug 2026US 2026/0234072 A1Rtx Corporation
Most cited
By later US patents
- Process for converting a metal carbide to carbon by etching in halogens566US 6,579,833 B1The Board of Trustees of the University of Illinois · 2003
- Treatment of etching chambers using activated cleaning gas291US 6,379,575 B1APPLIED Materials.Inc. · 2002
- Method and apparatus which reduce the erosion rate of surfaces exposed to halogen-containing plasmas123US 7,696,117 B2APPLIED Materials.Inc. · 2010
- Method for etching titanium nitride local interconnects118US 4,878,994 ATexas Instruments Incorporated · 1989
- Ceramic composite material and porous ceramic material77US 5,981,415 AUbe Industries, Ltd. · 1999