C04B 2235/3886
Refractory metal nitrides
Official title: Refractory metal nitrides, e.g. vanadium nitride, tungsten nitride
C04B2235/3886 (Refractory metal nitrides) appears on 388 US grants and 442 published applications in this corpus.
Search patents in C04B- Granted patents
- 388
- Published applications
- 442
- Assignees
- 207
- Inventors
- 875
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 9 | 0 |
| 1994 | 3 | 0 |
| 1995 | 6 | 0 |
| 1996 | 6 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 3 | 0 |
| 2002 | 4 | 7 |
| 2003 | 6 | 15 |
| 2004 | 3 | 14 |
| 2005 | 9 | 21 |
| 2006 | 12 | 21 |
| 2007 | 6 | 18 |
| 2008 | 15 | 19 |
| 2009 | 14 | 14 |
| 2010 | 13 | 21 |
| 2011 | 13 | 20 |
| 2012 | 8 | 22 |
| 2013 | 13 | 32 |
| 2014 | 20 | 20 |
| 2015 | 23 | 14 |
| 2016 | 19 | 17 |
| 2017 | 19 | 24 |
| 2018 | 17 | 13 |
| 2019 | 15 | 26 |
| 2020 | 15 | 17 |
| 2021 | 16 | 19 |
| 2022 | 15 | 14 |
| 2023 | 16 | 25 |
| 2024 | 11 | 11 |
| 2025 | 18 | 11 |
| 2026 | 10 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cubic boron nitride sintered material and tool8 Sep 2026US 12,729,164 B2Sumitomo Electric Hardmetal Corp.
- Insert and cutting tool21 Apr 2026US 12,605,769 B2KYOCERA Corporation
- Preparation method of sub-micron powder of high-entropy nitride via nitride thermal reduction with soft mechano-chemical assistance7 Apr 2026US 12,595,213 B2North Minzu University
- Sintered polycrystalline cubic boron nitride material24 Mar 2026US 12,583,797 B2Element Six (UK) Limited
- Porous refractory objects and methods of forming24 Feb 2026US 12,559,429 B2Saint-Gobain Ceramics & Plastics, Inc.
- Fabrication of ceramic matrix composites13 Aug 2026US 2026/0234069 A1Rtx Corporation
- Slurry infiltration of sacrificial material23 Jul 2026US 2026/0209127 A1Rtx Corporation
- Cubic boron nitride sintered body, coated cubic boron nitride sintered body, and tool having same2 Jul 2026US 2026/0184642 A1Tungaloy Corporation
- Silicon nitride sintered body and wear-resistant member using same4 Jun 2026US 2026/0152442 A1Niterra Materials Co., Ltd.
- Cathode component for an electrolytic aluminium production cell4 Jun 2026US 2026/0152866 A1Vsca AS
Most cited
By later US patents
- Compound sintered compact for use in a tool and the method for producing the same119US 4,403,015 ASumitomo Electric Industries, Ltd. · 1983
- Method for producing metal and ceramic sintered bodies and coatings112US 5,590,387 AH. C. Starck GmbH · 1996
- Composition for small ceramic igniters98US 5,514,630 ASaint-Gobain/Norton Industrial Ceramics Corporation · 1996
- Thermal shock resistant ceramic composites97US 7,488,544 B2Stanton Advanced Ceramics, Inc. · 2009
- Thermal shock resistant ceramic composites95US 7,666,344 B2Stanton Advanced Ceramics, Inc. · 2010