C04B 2235/404
Refractory metals
C04B2235/404 (Refractory metals) appears on 551 US grants and 649 published applications in this corpus.
Search patents in C04B- Granted patents
- 551
- Published applications
- 649
- Assignees
- 335
- Inventors
- 1,440
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 6 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 7 | 0 |
| 1994 | 6 | 0 |
| 1995 | 5 | 0 |
| 1996 | 7 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 1 |
| 2002 | 13 | 13 |
| 2003 | 20 | 35 |
| 2004 | 13 | 37 |
| 2005 | 23 | 32 |
| 2006 | 19 | 21 |
| 2007 | 22 | 19 |
| 2008 | 16 | 23 |
| 2009 | 8 | 28 |
| 2010 | 20 | 27 |
| 2011 | 14 | 27 |
| 2012 | 17 | 20 |
| 2013 | 23 | 30 |
| 2014 | 22 | 16 |
| 2015 | 11 | 20 |
| 2016 | 27 | 28 |
| 2017 | 19 | 27 |
| 2018 | 17 | 23 |
| 2019 | 20 | 25 |
| 2020 | 20 | 31 |
| 2021 | 25 | 35 |
| 2022 | 16 | 26 |
| 2023 | 20 | 27 |
| 2024 | 28 | 43 |
| 2025 | 28 | 17 |
| 2026 | 16 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method of making vacuum insulated panel25 Aug 2026US 12,715,199 B2LuxWall, Inc.
- Polycrystalline diamond and methods for fabricating the same14 Jul 2026US 12,680,395 B2US Synthetic Corporation
- Multilayer electronic component16 Jun 2026US 12,658,365 B2Samsung Electro-Mechanics Co., Ltd.
- Particle enhancement of ceramic matrix composites, method of manufacture thereof and articles comprising the same2 Jun 2026US 12,643,829 B2Rtx Corporation
- Material systems for repair of thermal barrier coating and methods thereof26 May 2026US 12,637,947 B2General Electric Company
- Metal carbide-coated carbon material24 Sep 2026US 2026/0285774 A1Shin-Etsu Chemical Co., Ltd.
- Particle enhancement of ceramic matrix composites, method of manufacture thereof and articles comprising the same10 Sep 2026US 2026/0265152 A1Rtx Corporation
- Method of manufacturing ceramic matrix composites reinforced with metallic particles27 Aug 2026US 2026/0250202 A1Politechnika Warszawska
- Fabrication of ceramic matrix composites13 Aug 2026US 2026/0234069 A1Rtx Corporation
- Blue light-emitting material having a perovskite-like structure and improved photoluminescent quantum yield, and method of preparing same30 Jul 2026US 2026/0218044 A1Iucf-Hyu (Ind-Univ.Cooperation Foundation Hanyang University)
Most cited
By later US patents
- Composite abrasive compact having high thermal stability403US 5,127,923 AUS Synthetic Corporation · 1992
- Composite synthetic materials149US 4,960,643 A1990
- Methods to partially reduce a niobium metal oxide and oxygen reduced niobium oxides131US 6,391,275 B1Cabot Corporation · 2002
- Methods to partially reduce a niobium metal oxide oxygen reduced niobium oxides120US 6,416,730 B1Cabot Corporation · 2002
- Thermally-stable polycrystalline diamond materials and compacts117US 7,473,287 B2Smith International, Inc. · 2009