C04B 35/52
Based on carbon
Official title: based on carbon, e.g. graphite
C04B35/52 (Based on carbon) appears on 1,733 US grants and 1,627 published applications in this corpus.
Search patents in C04B- Granted patents
- 1,733
- Published applications
- 1,627
- Assignees
- 869
- Inventors
- 3,822
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 24 | 0 |
| 1977 | 30 | 0 |
| 1978 | 27 | 0 |
| 1979 | 14 | 0 |
| 1980 | 39 | 0 |
| 1981 | 27 | 0 |
| 1982 | 18 | 0 |
| 1983 | 16 | 0 |
| 1984 | 27 | 0 |
| 1985 | 24 | 0 |
| 1986 | 23 | 0 |
| 1987 | 25 | 0 |
| 1988 | 24 | 0 |
| 1989 | 20 | 0 |
| 1990 | 24 | 0 |
| 1991 | 23 | 0 |
| 1992 | 35 | 0 |
| 1993 | 18 | 0 |
| 1994 | 27 | 0 |
| 1995 | 22 | 0 |
| 1996 | 28 | 0 |
| 1997 | 25 | 0 |
| 1998 | 20 | 0 |
| 1999 | 28 | 0 |
| 2000 | 26 | 0 |
| 2001 | 28 | 11 |
| 2002 | 28 | 44 |
| 2003 | 31 | 48 |
| 2004 | 34 | 50 |
| 2005 | 23 | 63 |
| 2006 | 25 | 51 |
| 2007 | 26 | 51 |
| 2008 | 15 | 56 |
| 2009 | 21 | 49 |
| 2010 | 32 | 75 |
| 2011 | 47 | 63 |
| 2012 | 26 | 68 |
| 2013 | 51 | 76 |
| 2014 | 65 | 70 |
| 2015 | 50 | 87 |
| 2016 | 68 | 89 |
| 2017 | 66 | 97 |
| 2018 | 83 | 75 |
| 2019 | 61 | 84 |
| 2020 | 65 | 71 |
| 2021 | 48 | 65 |
| 2022 | 47 | 64 |
| 2023 | 45 | 62 |
| 2024 | 51 | 66 |
| 2025 | 47 | 52 |
| 2026 | 36 | 40 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C04B 35/528Obtained from carbonaceous particles with or without other non-organic components575
- C04B 35/524Obtained from polymer precursors344
- C04B 35/522Graphite331
- C04B 35/536Based on expanded graphite or complexed graphite141
- C04B 35/521Obtained by impregnation of carbon products with a carbonisable material104
Recent patents
- Preparation method and use of high-entropy alloy (HEA)@carbon fiber composite nanomaterial28 Jul 2026US 12,692,198 B2Yangtze University
- Cutting tool28 Jul 2026US 12,692,199 B2Sumitomo Electric Hardmetal Corp.
- Composite polycrystal and tool with composite polycrystal28 Jul 2026US 12,692,200 B2Sumitomo Electric Hardmetal Corp.
- Silicon composition and methods of forming the same while forming a silicon doped carbon-based nanomaterial21 Jul 2026US 12,686,642 B2Nabors Energy Transition Solutions LLC
- Polycrystalline diamond and methods for fabricating the same14 Jul 2026US 12,680,395 B2US Synthetic Corporation
- Metal and/or ceramic/graphite-containing aluminum composite material and method for producing metal and/or ceramic/graphite-containing aluminum composite material24 Sep 2026US 2026/0285767 A1Advanced Composite Corporation
- Metal carbide-coated carbon material24 Sep 2026US 2026/0285774 A1Shin-Etsu Chemical Co., Ltd.
- Crucible and method of manufacturing the same24 Sep 2026US 2026/0286571 A1Sec Carbon, Limited
- A cutting element and methods of making same24 Sep 2026US 2026/0286782 A1Element Six (UK) Limited
- Porous silicon carbide composite material, electrode for fuel cell, and method for manufacturing porous silicon carbide composite material24 Sep 2026US 2026/0290847 A1DIC Corporation
Most cited
By later US patents
- Method of rapidly densifying a porous structure524US 5,348,774 AAlliedSignal Inc. · 1994
- Composite abrasive compact having high thermal stability403US 5,127,923 AUS Synthetic Corporation · 1992
- Polycrystalline diamond cutters with working surfaces having varied wear resistance while maintaining impact strength334US 6,601,662 B2Grant Prideco, L.P. · 2003
- Apparatuses, systems and methods for three-dimensional printing262US 9,254,535 B2Velo3D, Inc. · 2016
- Process for preparing carbon materials with diazonium salts and resultant carbon products257US 5,554,739 ACabot Corporation · 1996