C01B 21/0682
Preparation by direct nitridation of silicon
Official title: {Preparation by direct nitridation of silicon}
C01B21/0682 (Preparation by direct nitridation of silicon) appears on 45 US grants and 32 published applications in this corpus.
Search patents in C01B- Granted patents
- 45
- Published applications
- 32
- Assignees
- 40
- Inventors
- 124
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
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| 1987 | 1 | 0 |
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| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
| 2017 | 2 | 2 |
| 2018 | 2 | 1 |
| 2019 | 1 | 1 |
| 2020 | 0 | 2 |
| 2021 | 2 | 1 |
| 2022 | 0 | 4 |
| 2023 | 1 | 3 |
| 2024 | 0 | 2 |
| 2025 | 3 | 3 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Silicon nitride substrate, silicon nitride circuit substrate, and evaluation method, evaluation device, and evaluation system for silicon nitride substrate and silicon nitride circuit substrate21 Jul 2026US 12,690,479 B2Proterial, Ltd.
- Method and system for manufacturing silicon nitride from waste silicon kerf10 Mar 2026US 12,570,531 B1CRS-SPV Inc.
- Method and apparatus for producing silicon-containing materials23 Dec 2025US 12,503,364 B2Schmid Silicon Technology GmbH
- Synthesis method of silicon nitride powder and sintered body2 Dec 2025US 12,486,170 B2Zone Infinity Co., Ltd.
- Method for producing a silicon nitride powder and battery comprising the powder21 Oct 2025US 12,451,488 B2Institutt for Energiteknikk
- Antibacterial agent and method for using composition containing silicon nitride as antibacterial agent13 Aug 2026US 2026/0231949 A1Denka Company Limited
- Method and apparatus for producing silicon-containing materials5 Mar 2026US 2026/0062294 A1Schmid Silicon Techn ology GmbH
- Process for producing silicon nitride powder29 Jan 2026US 2026/0028226 A1Tokuyama Corporation
- Silicon nitride powder and method for producing same, and silicon nitride sintered body and method for producing same11 Sep 2025US 2025/0282688 A1Denka Company Limited
- Method of manufacturing silicon nitride substrate19 Jun 2025US 2025/0197299 A1
Most cited
By later US patents
- Silicon nitride vacuum furnace process101US 4,970,057 ANorton Company · 1990
- Method and apparatus for making a fine powder compound of a metal and another element34US 4,484,943 AToyota Jidosha Kabushiki Kaisha · 1984
- Low temperature method of forming materials using one or more metal reactants and a halogen-containing reactant to form one or more reactive intermediates32US 5,149,514 ASRI International · 1992
- Method of nitriding silicon20US 4,235,857 AFord Motor Company · 1980
- Process and apparatus for manufacturing fine powder19US 4,556,416 ASumitomo Electric Industries, Ltd. · 1985