C04B 2235/52
Constituents or additives characterised by their shapes
C04B2235/52 (Constituents or additives characterised by their shapes) appears on 3,329 US grants and 3,977 published applications in this corpus.
Search patents in C04B- Granted patents
- 3,329
- Published applications
- 3,977
- Assignees
- 1,371
- Inventors
- 7,333
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 9 | 0 |
| 1982 | 6 | 0 |
| 1983 | 8 | 0 |
| 1984 | 9 | 0 |
| 1985 | 10 | 0 |
| 1986 | 11 | 0 |
| 1987 | 13 | 0 |
| 1988 | 21 | 0 |
| 1989 | 22 | 0 |
| 1990 | 34 | 0 |
| 1991 | 39 | 0 |
| 1992 | 46 | 0 |
| 1993 | 56 | 0 |
| 1994 | 46 | 0 |
| 1995 | 46 | 0 |
| 1996 | 45 | 0 |
| 1997 | 47 | 0 |
| 1998 | 33 | 0 |
| 1999 | 43 | 0 |
| 2000 | 30 | 0 |
| 2001 | 41 | 9 |
| 2002 | 33 | 63 |
| 2003 | 39 | 111 |
| 2004 | 69 | 138 |
| 2005 | 53 | 136 |
| 2006 | 65 | 145 |
| 2007 | 64 | 124 |
| 2008 | 76 | 134 |
| 2009 | 68 | 188 |
| 2010 | 108 | 149 |
| 2011 | 101 | 163 |
| 2012 | 97 | 177 |
| 2013 | 111 | 136 |
| 2014 | 114 | 150 |
| 2015 | 120 | 152 |
| 2016 | 117 | 186 |
| 2017 | 130 | 191 |
| 2018 | 143 | 185 |
| 2019 | 156 | 206 |
| 2020 | 156 | 200 |
| 2021 | 159 | 205 |
| 2022 | 141 | 151 |
| 2023 | 149 | 202 |
| 2024 | 153 | 198 |
| 2025 | 145 | 168 |
| 2026 | 125 | 110 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C04B 2235/5208FibersIndexing code2,499
- C04B 2235/528SpheresIndexing code417
- C04B 2235/5296With a defined aspect ratioIndexing code361
- C04B 2235/5284Hollow fibersIndexing code301
- C04B 2235/5292Flakes, platelets or platesIndexing code298
- C04B 2235/5276Whiskers, spindles, needles or pinsIndexing code285
- C04B 2235/5204Monocrystalline powdersIndexing code8
Recent patents
- Method to control dissolution of silicon carbide during fabrication of a ceramic matrix composite6 Oct 2026US 12,753,127 B1Rolls-Royce High Temperature Composites Inc.
- Refractory compound and binder therefor, method for the production and use thereof6 Oct 2026US 12,757,552 B2Intocast AG
- Paste composition for additive manufacturing15 Sep 2026US 12,734,581 B2Vito NV
- Methods of making nanopowders, nanoceramic materials and nanoceramic components15 Sep 2026US 12,735,363 B2APPLIED Materials.Inc.
- Production of aerogel thermal insulation sheet by central injection approach15 Sep 2026US 12,735,364 B1Taiwan Aerogel Technology Material Co., Ltd.
- Sintering additives for improved microstructure control8 Oct 2026US 2026/0308070 A1UT-Battelle, LLC
- 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
- High Purity SiOC and SiC, Methods Compositions and Applications1 Oct 2026US 2026/0296898 A1Pallidus, Inc.
Most cited
By later US patents
- Carbon fibrils, method for producing same and compositions containing same361US 4,663,230 AHyperion Catalysis International, Inc. · 1987
- Nanotube fiber reinforced composite materials and method of producing fiber reinforced composites261US 6,934,600 B2Auburn University · 2005
- Carbon fibrils and method for producing same250US 5,165,909 AHyperion Catalysis Int'l., Inc. · 1992
- Electrostatic chuck having gas cavity and method244US 6,310,755 B1APPLIED Materials.Inc. · 2001
- Flexible nonwoven mat204US 5,380,580 AMinnesota Mining and Manufacturing Company · 1995