C04B 38/00
Porous mortars, concrete, artificial stone or ceramic ware
Official title: Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof (treating slag with gases or gas generating material C04B5/06 {; expanded graphite C04B35/536})
C04B38/00 (Porous mortars, concrete, artificial stone or ceramic ware) appears on 4,281 US grants and 4,597 published applications in this corpus.
Search patents in C04B- Granted patents
- 4,281
- Published applications
- 4,597
- Assignees
- 1,824
- Inventors
- 8,966
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 22 | 0 |
| 1977 | 25 | 0 |
| 1978 | 20 | 0 |
| 1979 | 11 | 0 |
| 1980 | 13 | 0 |
| 1981 | 32 | 0 |
| 1982 | 16 | 0 |
| 1983 | 29 | 0 |
| 1984 | 28 | 0 |
| 1985 | 29 | 0 |
| 1986 | 37 | 0 |
| 1987 | 40 | 0 |
| 1988 | 38 | 0 |
| 1989 | 58 | 0 |
| 1990 | 54 | 0 |
| 1991 | 68 | 0 |
| 1992 | 46 | 0 |
| 1993 | 66 | 0 |
| 1994 | 53 | 0 |
| 1995 | 54 | 0 |
| 1996 | 50 | 0 |
| 1997 | 81 | 0 |
| 1998 | 74 | 0 |
| 1999 | 75 | 0 |
| 2000 | 55 | 0 |
| 2001 | 81 | 17 |
| 2002 | 71 | 99 |
| 2003 | 81 | 139 |
| 2004 | 91 | 138 |
| 2005 | 55 | 155 |
| 2006 | 85 | 188 |
| 2007 | 63 | 222 |
| 2008 | 87 | 204 |
| 2009 | 114 | 259 |
| 2010 | 149 | 216 |
| 2011 | 160 | 185 |
| 2012 | 133 | 185 |
| 2013 | 148 | 154 |
| 2014 | 144 | 226 |
| 2015 | 141 | 213 |
| 2016 | 164 | 168 |
| 2017 | 152 | 177 |
| 2018 | 154 | 211 |
| 2019 | 167 | 213 |
| 2020 | 161 | 206 |
| 2021 | 143 | 190 |
| 2022 | 149 | 212 |
| 2023 | 128 | 190 |
| 2024 | 162 | 187 |
| 2025 | 124 | 147 |
| 2026 | 100 | 96 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C04B 38/0006Honeycomb structures1,328
- C04B 38/06Porous mortars, concrete, artificial stone or ceramic ware: by burning-out added substances745
- C04B 38/0022Obtained by a chemical conversion or reaction other than those relating to457
- C04B 38/0051Porous mortars, concrete, artificial stone or ceramic ware: characterised by the pore356
- C04B 38/10Porous mortars, concrete, artificial stone or ceramic ware: by using foaming agents296
- C04B 38/02Porous mortars, concrete, artificial stone or ceramic ware: by adding chemical blowing274
- C04B 38/009Porous or hollow ceramic granular materials255
- C04B 38/08Porous mortars, concrete, artificial stone or ceramic ware: by adding porous substances223
All 17 subgroupsShow fewer
- C04B 38/007Porous mortars, concrete, artificial stone or ceramic ware: characterised by the pore189
- C04B 38/0038Porous mortars, concrete, artificial stone or ceramic ware: by superficial sintering or128
- C04B 38/0045Porous mortars, concrete, artificial stone or ceramic ware: by a process involving128
- C04B 38/04Porous mortars, concrete, artificial stone or ceramic ware: by dissolving-out added substances89
- C04B 38/008Bodies obtained by assembling separate elements having such a configuration that the76
- C04B 38/0003Containing continuous channels66
- C04B 38/0093Porous mortars, concrete, artificial stone or ceramic ware: other features66
- C04B 38/0067Porous mortars, concrete, artificial stone or ceramic ware: characterised by the density39
- C04B 38/0087Porous mortars, concrete, artificial stone or ceramic ware: by generating pores in6
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Most cited
By later US patents
- Method for manufacturing a porous ceramic scaffold having an organic/inorganic hybrid coating layer containing a bioactive factor777US 8,734,831 B2Snu R&Db Foundation · 2014
- Liposome extrusion method511US 4,737,323 ALiposome Technology, Inc. · 1988
- Diesel particulate trap330US 4,329,162 ACorning Glass Works · 1982
- Device for removal of contaminants from fluid streams235US 5,750,026 ACorning Incorporated · 1998
- Luneberg dielectric lens and method of producing same224US 7,671,820 B2Sumitomo Electric Industries, Ltd. · 2010