C04B 2235/5224
Alumina or aluminates
C04B2235/5224 (Alumina or aluminates) appears on 603 US grants and 570 published applications in this corpus.
Search patents in C04B- Granted patents
- 603
- Published applications
- 570
- Assignees
- 264
- Inventors
- 1,235
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 8 | 0 |
| 1990 | 10 | 0 |
| 1991 | 13 | 0 |
| 1992 | 19 | 0 |
| 1993 | 15 | 0 |
| 1994 | 11 | 0 |
| 1995 | 20 | 0 |
| 1996 | 15 | 0 |
| 1997 | 15 | 0 |
| 1998 | 12 | 0 |
| 1999 | 11 | 0 |
| 2000 | 7 | 0 |
| 2001 | 9 | 1 |
| 2002 | 7 | 17 |
| 2003 | 10 | 12 |
| 2004 | 12 | 19 |
| 2005 | 12 | 22 |
| 2006 | 8 | 16 |
| 2007 | 4 | 24 |
| 2008 | 9 | 19 |
| 2009 | 18 | 42 |
| 2010 | 17 | 14 |
| 2011 | 18 | 32 |
| 2012 | 21 | 19 |
| 2013 | 11 | 13 |
| 2014 | 16 | 18 |
| 2015 | 11 | 18 |
| 2016 | 11 | 22 |
| 2017 | 18 | 25 |
| 2018 | 18 | 33 |
| 2019 | 23 | 35 |
| 2020 | 28 | 37 |
| 2021 | 34 | 31 |
| 2022 | 26 | 23 |
| 2023 | 19 | 28 |
| 2024 | 31 | 18 |
| 2025 | 20 | 22 |
| 2026 | 9 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Ceramic matrix composites and their preforms11 Aug 2026US 12,703,169 B2Rtx Corporation
- Sagger for sintering lithium composite transition metal oxide and preparation method thereof4 Aug 2026US 12,698,242 B2Guangdong Brunp Recycling Technology Co., Ltd.
- Tooling for producing z-channels in ceramic fiber preforms14 Jul 2026US 12,678,990 B2Rtx Corporation
- Ceramic continuous fibers having metal element and ceramic matrix composite material using same7 Jul 2026US 12,673,901 B2Tosoh Corporation
- Prepreg for ceramic matrix composite12 May 2026US 12,623,972 B2Saint-Gobain Centre De Recherches Et D ' Etudes Europeen
- Composite panel core structure27 Aug 2026US 2026/0250208 A1General Electric Company
- Slurry infiltration of sacrificial material23 Jul 2026US 2026/0209127 A1Rtx Corporation
- Cmc component with cover plate23 Jul 2026US 2026/0210546 A1Rtx Corporation
- A tube furnace for the use in a sintering and/or debinding process16 Jul 2026US 2026/0199973 A1BASF SE
- Cmc component with cover plate16 Jul 2026US 2026/0201815 A1Rtx Corporation
Most cited
By later US patents
- Honeycomb filter and ceramic filter assembly201US 6,669,751 B1Ibiden Co., Ltd. · 2003
- Ceramic structural body188US 5,914,187 AIbiden Co., Ltd. · 1999
- BN coating of ceramic fibers for ceramic fiber composites139US 4,642,271 AThe United States of America as represented by the Secretary of the Navy · 1987
- Carbon/carbon composite fasteners126US 5,127,783 AThe B. F. Goodrich Company · 1992
- Flexible graphite composite122US 5,902,762 AUCAR Carbon Technology Corporation · 1999