C04B 2235/3205
Alkaline earth oxides or oxide forming salts thereof
Official title: Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
C04B2235/3205 (Alkaline earth oxides or oxide forming salts thereof) appears on 4,528 US grants and 5,577 published applications in this corpus.
Search patents in C04B- Granted patents
- 4,528
- Published applications
- 5,577
- Assignees
- 1,703
- Inventors
- 9,719
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 6 | 0 |
| 1978 | 8 | 0 |
| 1979 | 2 | 0 |
| 1980 | 8 | 0 |
| 1981 | 12 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 9 | 0 |
| 1985 | 7 | 0 |
| 1986 | 9 | 0 |
| 1987 | 7 | 0 |
| 1988 | 13 | 0 |
| 1989 | 16 | 0 |
| 1990 | 20 | 0 |
| 1991 | 27 | 0 |
| 1992 | 26 | 0 |
| 1993 | 25 | 0 |
| 1994 | 20 | 0 |
| 1995 | 17 | 0 |
| 1996 | 19 | 0 |
| 1997 | 31 | 0 |
| 1998 | 20 | 0 |
| 1999 | 28 | 0 |
| 2000 | 27 | 0 |
| 2001 | 43 | 20 |
| 2002 | 54 | 71 |
| 2003 | 89 | 198 |
| 2004 | 124 | 211 |
| 2005 | 112 | 207 |
| 2006 | 134 | 231 |
| 2007 | 137 | 243 |
| 2008 | 128 | 209 |
| 2009 | 161 | 281 |
| 2010 | 177 | 321 |
| 2011 | 194 | 279 |
| 2012 | 214 | 265 |
| 2013 | 218 | 242 |
| 2014 | 217 | 231 |
| 2015 | 207 | 245 |
| 2016 | 228 | 238 |
| 2017 | 213 | 216 |
| 2018 | 187 | 228 |
| 2019 | 187 | 227 |
| 2020 | 167 | 229 |
| 2021 | 159 | 236 |
| 2022 | 184 | 240 |
| 2023 | 186 | 227 |
| 2024 | 160 | 221 |
| 2025 | 174 | 144 |
| 2026 | 102 | 117 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C04B 2235/3206Magnesium oxides or oxide-forming salts thereofIndexing code2,644
- C04B 2235/3208Calcium oxide or oxide-forming salts thereofIndexing code2,485
- C04B 2235/3215Barium oxides or oxide-forming salts thereofIndexing code1,623
- C04B 2235/3213Strontium oxides or oxide-forming salts thereofIndexing code1,454
Recent patents
- Annealing separator composition for grain- oriented electrical steel sheet, grain-oriented electrical steel sheet, and method for producing grain-oriented electrical steel sheet6 Oct 2026US 12,753,457 B2Posco
- Refractory compound and binder therefor, method for the production and use thereof6 Oct 2026US 12,757,552 B2Intocast AG
- Highly dense red mud shields for X-ray and γ-ray attenuation29 Sep 2026US 12,747,190 B2Council of Scientific and Industrial Research
- M-type hexaferrite comprising a low dielectric loss ceramic29 Sep 2026US 12,749,604 B2Rogers Corporation
- Dielectric ceramic composition and multilayer ceramic electronic device22 Sep 2026US 12,741,911 B2Taiyo Yuden Co., Ltd.
- Dielectric composition with high-temperature stability8 Oct 2026US 2026/0308067 A1Amotech Co., Ltd.
- Dielectric composition with high-temperature stability8 Oct 2026US 2026/0308068 A1Amotech Co., Ltd.
- Process for improving flash sintering of ceramics and improved ceramics8 Oct 2026US 2026/0308072 A1The Regents of the University of Colorado, a body corporate
- Dielectric ceramic composition and multilayer ceramic electronic device1 Oct 2026US 2026/0296979 A1TDK Corporation
- Manufacturing method for heat treatment jig24 Sep 2026US 2026/0285762 A1Tokyo Yogyo Kabushiki Kaisha
Most cited
By later US patents
- Combinatorial synthesis of novel materials365US 5,985,356 ASymyx Technologies, Inc. · 1999
- Polycrystalline diamond cutters with working surfaces having varied wear resistance while maintaining impact strength334US 6,601,662 B2Grant Prideco, L.P. · 2003
- Nanocrystalline apatites and composites, prostheses incorporating them, and method for their production242US 6,013,591 AMassachusetts Institute of Technology · 2000
- Long persistent phosphors and persistent energy transfer technique225US 6,953,536 B2University of Georgia Research Foundation, Inc. · 2005
- Method for fabricating artificial bone implant green parts218US 5,639,402 A1997