C04B 41/5066
Silicon nitride
Official title: {Silicon nitride}
C04B41/5066 (Silicon nitride) appears on 78 US grants and 48 published applications in this corpus.
Search patents in C04B- Granted patents
- 78
- Published applications
- 48
- Assignees
- 57
- Inventors
- 208
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 5 |
| 2010 | 1 | 2 |
| 2011 | 2 | 1 |
| 2012 | 2 | 2 |
| 2013 | 1 | 1 |
| 2014 | 3 | 1 |
| 2015 | 0 | 1 |
| 2016 | 2 | 1 |
| 2017 | 0 | 1 |
| 2018 | 1 | 2 |
| 2019 | 1 | 5 |
| 2020 | 2 | 1 |
| 2021 | 5 | 7 |
| 2022 | 1 | 5 |
| 2023 | 1 | 0 |
| 2024 | 6 | 6 |
| 2025 | 3 | 1 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Composite ceramic substrate having multi-layer configuration29 Sep 2026US 12,747,191 B2Tong Hsing Electronic Industries, Ltd.
- Coating layer with slow SIO2 crystallization rate14 Jul 2026US 12,679,782 B2ROLLS-ROYCE plc
- Method of forming a barrier layer on a ceramic matrix composite2 Jun 2026US 12,643,828 B2Rolls-Royce High Temperature Composites Inc.
- Environmental barrier coating with thermal resistance12 May 2026US 12,624,229 B2Rtx Corporation
- High temperature oxidation protection for carbon-carbon composites17 Jun 2025US 12,330,996 B2Goodrich Corporation
- Method for fabricating an environmental barrier coating on a ceramic matrix composite13 Aug 2026US 2026/0234070 A1Rtx Corporation
- Method for producing graphitised formed parts by means of 3d printing6 Aug 2026US 2026/0225313 A1Nippon Kornmeyer Carbon Group GmbH
- Preparation method of polymer-derived high-temperature ceramic film sensor16 Jan 2025US 2025/0019310 A1Lingnan Normal University
- Recession resistant intermediate layer for cmc vane19 Dec 2024US 2024/0417336 A1ROLLS-ROYCE plc
- Composite ceramic substrate having multi-layer configuration31 Oct 2024US 2024/0360043 A1Tong Hsing Electronic Industries, Ltd.
Most cited
By later US patents
- Multilayer ceramics from hydrogen silsesquioxane200US 4,756,977 ADow Corning Corporation · 1988
- Platinum and rhodium catalysis of low temperature formation multilayer ceramics55US 4,822,697 ADow Corning Corporation · 1989
- Ceramic composite valve for internal combustion engines and the like47US 4,928,645 AW. R. Grace & Co.-Conn. · 1990
- Thermal barrier coating for silicon nitride40US 6,159,553 AThe United States of America as represented by the Secretary of the Air Force · 2000
- Sintered diamond tool and method for manufacturing the same35US 6,528,159 B1Sumitomo Electric Industries, Ltd. · 2003