C04B 2235/721
Carbon content
C04B2235/721 (Carbon content) appears on 248 US grants and 282 published applications in this corpus.
Search patents in C04B- Granted patents
- 248
- Published applications
- 282
- Assignees
- 183
- Inventors
- 675
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 5 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 8 | 7 |
| 2003 | 8 | 13 |
| 2004 | 8 | 17 |
| 2005 | 8 | 18 |
| 2006 | 9 | 14 |
| 2007 | 7 | 7 |
| 2008 | 7 | 9 |
| 2009 | 12 | 14 |
| 2010 | 11 | 19 |
| 2011 | 13 | 21 |
| 2012 | 11 | 7 |
| 2013 | 11 | 14 |
| 2014 | 4 | 10 |
| 2015 | 11 | 5 |
| 2016 | 8 | 9 |
| 2017 | 7 | 12 |
| 2018 | 14 | 11 |
| 2019 | 5 | 8 |
| 2020 | 5 | 12 |
| 2021 | 9 | 11 |
| 2022 | 9 | 8 |
| 2023 | 9 | 13 |
| 2024 | 4 | 11 |
| 2025 | 9 | 5 |
| 2026 | 6 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sintered body, light emitting device, wavelength conversion member, and method for manufacturing sintered body28 Apr 2026US 12,612,550 B2Nichia Corporation
- Method for separating impurities from silicon carbide, and temperature-treated and purified silicon carbide powder24 Mar 2026US 12,583,752 B2ESK-SIC GmbH
- Vapor-mediated synthesis of silicon carbide matrices for ceramic matrix composites by reactive melt infiltration17 Mar 2026US 12,577,172 B2The Regents of the University of California
- Corrosion-resistant components3 Mar 2026US 12,567,564 B2CoorsTek, Inc.
- Crucibles and compositions and processes for making same10 Feb 2026US 12,545,623 B2Materion Corporation
- Composite sintered body16 Jul 2026US 2026/0200803 A1NGK Insulators, Ltd.
- Inorganic particle dispersed slurry composition and method for producing inorganic sintered body9 Jul 2026US 2026/0193140 A1Sekisui Chemical Co., Ltd.
- Sputtering target material and sputtering target21 May 2026US 2026/0139361 A1Sumitomo Chemical Company, Limited
- Synthesis of diamond-boron carbide (b4c) ceramic materials30 Apr 2026US 2026/0116828 A1Diamond Innovations, Inc.
- Copper-coated titanium diboride articles16 Apr 2026US 2026/0103816 A1Alcoa USA Corp.
Most cited
By later US patents
- Silicon carbide and silicon bonded polycrystalline diamond body and method of making it157US 4,151,686 AGeneral Electric Company · 1979
- Very high purity fine powders and methods to produce such powders142US 6,569,397 B12003
- 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
- Non-frangible alumina-silica fibers117US 4,047,965 AMinnesota Mining and Manufacturing Company · 1977