C04B 35/62871
Silicon nitride
Official title: {Silicon nitride}
C04B35/62871 (Silicon nitride) appears on 128 US grants and 122 published applications in this corpus.
Search patents in C04B- Granted patents
- 128
- Published applications
- 122
- Assignees
- 57
- Inventors
- 248
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 8 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 1 |
| 2002 | 4 | 3 |
| 2003 | 1 | 2 |
| 2004 | 3 | 0 |
| 2005 | 1 | 2 |
| 2006 | 1 | 4 |
| 2007 | 1 | 5 |
| 2008 | 2 | 1 |
| 2009 | 3 | 9 |
| 2010 | 3 | 2 |
| 2011 | 3 | 7 |
| 2012 | 2 | 5 |
| 2013 | 4 | 9 |
| 2014 | 3 | 3 |
| 2015 | 2 | 6 |
| 2016 | 3 | 8 |
| 2017 | 7 | 8 |
| 2018 | 5 | 7 |
| 2019 | 4 | 7 |
| 2020 | 9 | 4 |
| 2021 | 1 | 5 |
| 2022 | 1 | 4 |
| 2023 | 5 | 9 |
| 2024 | 5 | 1 |
| 2025 | 3 | 7 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multilayer coating for oxidation protection30 Jun 2026US 12,668,550 B2Rtx Corporation
- Method of fabricating a ceramic matrix composite including a dip coating process10 Feb 2026US 12,545,625 B1Rolls-Royce High Temperature Composites Inc.
- Composites and methods of forming composites having an increased volume of oxidation resistant ceramic particles20 May 2025US 12,304,869 B2Goodrich Corporation
- Method for coating short fibres8 Apr 2025US 12,269,780 B2Centre National De La Recherche Scientifique
- System and method for coating ceramic fiber1 Apr 2025US 12,264,110 B2General Electric Company
- Fabrication of ceramic matrix composites13 Aug 2026US 2026/0234069 A1Rtx Corporation
- Advanced polymer impregnation and pyrolysis of ceramic matrix composites28 May 2026US 2026/0146007 A1
- Method for fabricating interface coatings23 Apr 2026US 2026/0109651 A1Rtx Corporation
- Method for manufacturing a composite material part4 Dec 2025US 2025/0368582 A1Safran Ceramics
- Ceramic matrix composite parts and methods for their production9 Oct 2025US 2025/0314177 A1Rtx Corporation
Most cited
By later US patents
- Fiber reinforced composite product97US 3,991,248 ADucommun Incorporated · 1976
- Continuous fiber reinforced composites and methods, apparatuses, and compositions for making the same97US 6,899,777 B2Advanced Ceramics Research, Inc. · 2005
- Process for producing fiber reinforced composite74US 5,876,659 AHitachi, Ltd. · 1999
- Article and method for making complex shaped preform and silicon carbide composite by melt infiltration73US 6,024,898 AGeneral Electric Company · 2000
- Coated and whiskered fibers for use in composite materials63US 5,187,021 ADiamond Fiber Composites, Inc. · 1993