C04B 2235/3218
Aluminium hydroxides
Official title: Aluminium (oxy)hydroxides, e.g. boehmite, gibbsite, alumina sol
C04B2235/3218 (Aluminium hydroxides) appears on 383 US grants and 508 published applications in this corpus.
Search patents in C04B- Granted patents
- 383
- Published applications
- 508
- Assignees
- 202
- Inventors
- 962
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 7 | 1 |
| 2002 | 2 | 9 |
| 2003 | 4 | 19 |
| 2004 | 15 | 23 |
| 2005 | 5 | 22 |
| 2006 | 9 | 20 |
| 2007 | 11 | 18 |
| 2008 | 9 | 20 |
| 2009 | 9 | 44 |
| 2010 | 17 | 21 |
| 2011 | 13 | 31 |
| 2012 | 18 | 33 |
| 2013 | 24 | 18 |
| 2014 | 27 | 27 |
| 2015 | 25 | 17 |
| 2016 | 27 | 21 |
| 2017 | 14 | 16 |
| 2018 | 14 | 18 |
| 2019 | 20 | 24 |
| 2020 | 12 | 21 |
| 2021 | 13 | 18 |
| 2022 | 22 | 19 |
| 2023 | 10 | 21 |
| 2024 | 11 | 14 |
| 2025 | 15 | 5 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process for producing a porous alpha-alumina catalyst support16 Jun 2026US 12,654,152 B2BASF SE
- Method for manufacturing honeycomb structure28 Apr 2026US 12,612,341 B2NGK Insulators, Ltd.
- Composite member, and heat generation device, building member and light emitting device, each of which uses same14 Apr 2026US 12,600,673 B2Panasonic Intellectual Property Management Co., Ltd.
- Alpha alumina with high purity and high relative density, a method for its production and its use27 Jan 2026US 12,534,378 B2
- Methods of forming siAlON in carbon/carbon composites13 Jan 2026US 12,522,543 B2Goodrich Corporation
- Alumina granule30 Jul 2026US 2026/0217608 A1Sumitomo Chemical Company, Limited
- Method for reducing carbon-based emissions and/or carbon-based casting defects during a moulding cycle of a moulding material containing smectite containing clay, said moulding cycle comprising two or more cycles16 Jul 2026US 2026/0199963 A1HüTtenes-Albertus Chemische Werke Gesellschaft Mit BeschräNkter Haftung
- Moulding material for producing a clay-bonded mould, and use thereof in a moulding material cycle16 Jul 2026US 2026/0200801 A1HüTtenes-Albertus Chemische Werke Gesellschaft Mit BeschräNkter Haftung
- Method for guiding a moulding material in a moulding material cycle comprising two or more cycles16 Jul 2026US 2026/0200805 A1HüTtenes-Albertus Chemische Werke Gesellschaft Mit BeschräNkter Haftung
- Method for guiding a moulding material in a moulding material cycle comprising two or more cycles16 Jul 2026US 2026/0200806 A1HüTtenes-Albertus Chemische Werke Gesellschaft Mit BeschräNkter Haftung
Most cited
By later US patents
- Ceramic aggregate particles158US 6,881,483 B23M Innovative Properties Company · 2005
- Abrasive grains in the shape of platelets157US 4,848,041 AMinnesota Mining and Manufacturing Company · 1989
- Thermal shock resistant ceramic composites97US 7,488,544 B2Stanton Advanced Ceramics, Inc. · 2009
- Thermal shock resistant ceramic composites95US 7,666,344 B2Stanton Advanced Ceramics, Inc. · 2010
- Agglomerate abrasive grain and a method of making the same88US 6,790,126 B23M Innovative Properties Company · 2004