C04B 2235/422
Carbon
C04B2235/422 (Carbon) appears on 1,480 US grants and 1,887 published applications in this corpus.
Search patents in C04B- Granted patents
- 1,480
- Published applications
- 1,887
- Assignees
- 833
- Inventors
- 3,783
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 7 | 0 |
| 1980 | 10 | 0 |
| 1981 | 4 | 0 |
| 1982 | 5 | 0 |
| 1983 | 7 | 0 |
| 1984 | 5 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 8 | 0 |
| 1991 | 14 | 0 |
| 1992 | 13 | 0 |
| 1993 | 7 | 0 |
| 1994 | 12 | 0 |
| 1995 | 7 | 0 |
| 1996 | 11 | 0 |
| 1997 | 11 | 0 |
| 1998 | 10 | 0 |
| 1999 | 19 | 0 |
| 2000 | 12 | 0 |
| 2001 | 14 | 3 |
| 2002 | 21 | 30 |
| 2003 | 24 | 59 |
| 2004 | 32 | 54 |
| 2005 | 33 | 63 |
| 2006 | 26 | 64 |
| 2007 | 33 | 51 |
| 2008 | 35 | 49 |
| 2009 | 28 | 64 |
| 2010 | 30 | 73 |
| 2011 | 40 | 68 |
| 2012 | 40 | 73 |
| 2013 | 52 | 85 |
| 2014 | 63 | 72 |
| 2015 | 66 | 85 |
| 2016 | 67 | 91 |
| 2017 | 73 | 121 |
| 2018 | 97 | 96 |
| 2019 | 70 | 95 |
| 2020 | 60 | 90 |
| 2021 | 73 | 102 |
| 2022 | 48 | 83 |
| 2023 | 71 | 86 |
| 2024 | 69 | 101 |
| 2025 | 69 | 67 |
| 2026 | 62 | 62 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Biochar for stable solidification of heavy metals8 Sep 2026US 12,729,162 B2Chinese Research Academy of Environmental Sciences
- Method for manufacturing a SiC ceramic part25 Aug 2026US 12,715,818 B2Jiageng (Jiangsu) Special Materials Co., Ltd.
- Block copolymer porous carbon fibers and uses thereof25 Aug 2026US 12,715,819 B2Virginia Tech Intellectual Properties, Inc.
- Piezoelectric materials and piezoelectric devices25 Aug 2026US 12,721,042 B2Beijing BOE Technology Development Co., Ltd.
- Method for manufacturing conductive particles for conducting ions and electrons of positive or negative electrode28 Jul 2026US 12,692,197 B1Shenzhen TXD Technology Co., Ltd.
- Thermal insulation materials suitable for use at high temperatures, and process for making said materials8 Oct 2026US 2026/0308071 A1Mersen Scotland Holytown Limited
- Processes for the preparation of (3s,4r)-3-ethyl-4-(3h-imidazo[1,2-a]pyrrolo[2,3-e]-pyrazin-8-yl)-n-(2,2,2-trifluoroethyl)pyrrolidine-1-carboxamide and solid state forms thereof8 Oct 2026US 2026/0308162 A1
- Fiber composite felt8 Oct 2026US 2026/0309422 A1Sgl Carbon SE
- 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.
Most cited
By later US patents
- 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
- Process for preparing carbon materials with diazonium salts and resultant carbon products257US 5,554,739 ACabot Corporation · 1996
- Silicon carbide and silicon bonded polycrystalline diamond body and method of making it157US 4,151,686 AGeneral Electric Company · 1979
- Reaction of carbon black with diazonium salts, resultant carbon black products and their uses157US 5,851,280 ACabot Corporation · 1998