C04B 2235/3217
Aluminum oxide or oxide forming salts thereof
Official title: Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
C04B2235/3217 (Aluminum oxide or oxide forming salts thereof) appears on 3,902 US grants and 4,996 published applications in this corpus.
Search patents in C04B- Granted patents
- 3,902
- Published applications
- 4,996
- Assignees
- 1,589
- Inventors
- 8,944
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 13 | 0 |
| 1979 | 1 | 0 |
| 1980 | 8 | 0 |
| 1981 | 14 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 10 | 0 |
| 1986 | 13 | 0 |
| 1987 | 11 | 0 |
| 1988 | 16 | 0 |
| 1989 | 14 | 0 |
| 1990 | 19 | 0 |
| 1991 | 28 | 0 |
| 1992 | 16 | 0 |
| 1993 | 30 | 0 |
| 1994 | 29 | 0 |
| 1995 | 22 | 0 |
| 1996 | 21 | 0 |
| 1997 | 26 | 0 |
| 1998 | 27 | 0 |
| 1999 | 36 | 0 |
| 2000 | 33 | 0 |
| 2001 | 29 | 6 |
| 2002 | 33 | 57 |
| 2003 | 48 | 149 |
| 2004 | 91 | 164 |
| 2005 | 74 | 186 |
| 2006 | 98 | 184 |
| 2007 | 106 | 164 |
| 2008 | 95 | 181 |
| 2009 | 99 | 252 |
| 2010 | 146 | 227 |
| 2011 | 138 | 217 |
| 2012 | 166 | 234 |
| 2013 | 181 | 232 |
| 2014 | 168 | 193 |
| 2015 | 176 | 186 |
| 2016 | 175 | 186 |
| 2017 | 162 | 208 |
| 2018 | 166 | 209 |
| 2019 | 164 | 273 |
| 2020 | 163 | 234 |
| 2021 | 169 | 235 |
| 2022 | 191 | 251 |
| 2023 | 195 | 264 |
| 2024 | 165 | 206 |
| 2025 | 193 | 174 |
| 2026 | 101 | 124 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of producing manufactured object and manufactured object6 Oct 2026US 12,752,457 B2Canon Kabushiki Kaisha
- Paramagnetic garnet-based transparent ceramic and method for producing same6 Oct 2026US 12,755,877 B2Shin-Etsu Chemical Co., Ltd.
- Refractory compound and binder therefor, method for the production and use thereof6 Oct 2026US 12,757,552 B2Intocast AG
- Synthetic mineral composition, a method of forming a synthetic mineral composition and uses of a synthetic mineral composition15 Sep 2026US 12,735,360 B2Sibelco Nederland N.V.
- Methods of making nanopowders, nanoceramic materials and nanoceramic components15 Sep 2026US 12,735,363 B2APPLIED Materials.Inc.
- Method for preparing porous ceramic with uniform micro-nano pores8 Oct 2026US 2026/0308066 A1Central South University
- 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
- Castable refractory compositions and manufacturing methods24 Sep 2026US 2026/0285763 A1Calderys France
Most cited
By later US patents
- Nanocrystalline apatites and composites, prostheses incorporating them, and method for their production242US 6,013,591 AMassachusetts Institute of Technology · 2000
- Ceramic structural body188US 5,914,187 AIbiden Co., Ltd. · 1999
- Tunable dielectric compositions including low loss glass184US 6,905,989 B2Paratek Microwave, Inc. · 2005
- Luminescent ceramic for a light emitting device173US 7,361,938 B2Philips Lumileds Lighting Company, LLC · 2008
- Lithium ion-conductive solid electrolyte containing lithium titanium phosphate169US 4,985,317 AJapan Synthetic Rubber Co., Ltd. · 1991