C01B 33/021
Preparation
Official title: Preparation (chemical coating from the vapour phase C23C16/00)
C01B33/021 (Preparation) appears on 928 US grants and 1,244 published applications in this corpus.
Search patents in C01B- Granted patents
- 928
- Published applications
- 1,244
- Assignees
- 476
- Inventors
- 2,265
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 7 | 0 |
| 1979 | 11 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 11 | 0 |
| 1983 | 8 | 0 |
| 1984 | 19 | 0 |
| 1985 | 15 | 0 |
| 1986 | 4 | 0 |
| 1987 | 15 | 0 |
| 1988 | 12 | 0 |
| 1989 | 14 | 0 |
| 1990 | 11 | 0 |
| 1991 | 14 | 0 |
| 1992 | 12 | 0 |
| 1993 | 5 | 0 |
| 1994 | 8 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 6 | 8 |
| 2003 | 4 | 6 |
| 2004 | 2 | 21 |
| 2005 | 9 | 7 |
| 2006 | 5 | 8 |
| 2007 | 5 | 16 |
| 2008 | 3 | 36 |
| 2009 | 13 | 51 |
| 2010 | 21 | 69 |
| 2011 | 23 | 82 |
| 2012 | 31 | 74 |
| 2013 | 38 | 73 |
| 2014 | 45 | 66 |
| 2015 | 55 | 64 |
| 2016 | 49 | 64 |
| 2017 | 55 | 80 |
| 2018 | 34 | 58 |
| 2019 | 59 | 45 |
| 2020 | 48 | 53 |
| 2021 | 30 | 46 |
| 2022 | 46 | 63 |
| 2023 | 35 | 70 |
| 2024 | 53 | 71 |
| 2025 | 28 | 57 |
| 2026 | 32 | 56 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Process for manufacturing silicon-containing materials in a cascade reactor system6 Oct 2026US 12,753,495 B2Wacker Chemie AG
- Method for manufacturing negative electrode active material6 Oct 2026US 12,755,965 B2Toyota Jidosha Kabushiki Kaisha
- Circular carbon process29 Sep 2026US 12,747,159 B2BASF SE
- Hydrogen production apparatus, hydrogen production method, silicon fine particles for hydrogen production, and production method for silicon fine particles for hydrogen production15 Sep 2026US 12,735,315 B2Nisshin Kasei Co., Ltd.
- Multi-stage magnesiothermic reduction for production of silicon oxides with reduced silicon grain size25 Aug 2026US 12,715,775 B2Mitsubishi Chemical Corporation
- Negative electrode active material, method of manufacturing the negative electrode active material, and negative electrode including the negative electrode active material8 Oct 2026US 2026/0307996 A1Samsung SDI.Co., Ltd.
- Negative electrode active material, negative electrode including the same, and method for manufacturing the same8 Oct 2026US 2026/0312012 A1Samsung SDI.Co., Ltd.
- Gas phase deposition reactor and method for producing polycrystalline silicon1 Oct 2026US 2026/0296900 A1Wacker Chemie AG
- Plasma modification preparation method of silicon-carbon composite material, silicon-carbon composite material and use thereof24 Sep 2026US 2026/0285692 A1Shida Shinghwa Advanced Material Group Co., Ltd.
- Silicon-carbon composite material, preparation method therefor, and application thereof24 Sep 2026US 2026/0285693 A1Ningde Amperex Technology Limited
Most cited
By later US patents
- Process for the deposition of pure semiconductor material372US 4,179,530 AWacker-Chemitronic Gesellschaft fur Elektronik-Grundstoffe mbH · 1979
- Method for silicon deposition106US 5,798,137 AAdvanced Silicon Materials LLC · 1998
- Method of producing porous silicon particles by stain-etching and silicon nanoparticles from stain-etched silicon powder99US 7,514,369 B2Applied Nanotech Holdings, Inc. · 2009
- Narrow size distribution silicon and germanium nanocrystals84US 6,268,041 B1Starfire Electronic Development & Marketing, Ltd. · 2001
- Silicon particles for battery electrodes81US 9,553,303 B2Enevate Corporation · 2017