C04B 2235/421
Boron
C04B2235/421 (Boron) appears on 254 US grants and 243 published applications in this corpus.
Search patents in C04B- Granted patents
- 254
- Published applications
- 243
- Assignees
- 172
- Inventors
- 620
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 7 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 6 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 0 |
| 2002 | 6 | 3 |
| 2003 | 5 | 19 |
| 2004 | 7 | 17 |
| 2005 | 11 | 17 |
| 2006 | 8 | 9 |
| 2007 | 8 | 5 |
| 2008 | 6 | 8 |
| 2009 | 5 | 15 |
| 2010 | 7 | 11 |
| 2011 | 9 | 10 |
| 2012 | 6 | 10 |
| 2013 | 8 | 15 |
| 2014 | 17 | 6 |
| 2015 | 10 | 6 |
| 2016 | 10 | 8 |
| 2017 | 13 | 10 |
| 2018 | 8 | 7 |
| 2019 | 11 | 13 |
| 2020 | 3 | 15 |
| 2021 | 8 | 11 |
| 2022 | 6 | 6 |
| 2023 | 10 | 7 |
| 2024 | 6 | 7 |
| 2025 | 4 | 3 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Piezoelectric materials and piezoelectric devices25 Aug 2026US 12,721,042 B2Beijing BOE Technology Development Co., Ltd.
- Matrix for ceramic-containing materials17 Mar 2026US 12,578,094 B1Rtx Corporation
- Solid-phase-sintered silicon carbide article and preparation method thereof17 Feb 2026US 12,552,718 B2Nantong Sanzer Precision Ceramics Co., Ltd.
- Method for fabricating a ceramic material14 Oct 2025US 12,441,663 B2Rtx Corporation
- Gallium nitride-based sintered body and method for manufacturing same9 Sep 2025US 12,410,101 B2Tosoh Corporation
- Cmc having roughened surfaces for improved heat transfer24 Sep 2026US 2026/0285769 A1Rtx Corporation
- Fabrication of ceramic matrix composites13 Aug 2026US 2026/0234069 A1Rtx Corporation
- Ceramic body and electric heater13 Aug 2026US 2026/0239494 A1NGK Insulators, Ltd.
- Synthesis of diamond-boron carbide (b4c) ceramic materials30 Apr 2026US 2026/0116828 A1Diamond Innovations, Inc.
- Ceramic matrix composite preform infiltration5 Feb 2026US 2026/0035311 A1Rtx Corporation
Most cited
By later US patents
- Composite abrasive compact having high thermal stability403US 5,127,923 AUS Synthetic Corporation · 1992
- Polycrystalline diamond compact (PDC) cutting element having multiple catalytic elements156US 7,635,035 B1US Synthetic Corporation · 2009
- Thermally-stable polycrystalline diamond materials and compacts117US 7,473,287 B2Smith International, Inc. · 2009
- Graphite-loaded silicon carbide112US 5,486,496 AAlumina Ceramics Co. (ACI) · 1996
- Graphite-loaded silicon carbide105US 5,543,368 AAlumina Ceramics Co. (ACI) · 1996