C04B 35/62852
Alumina or aluminates
Official title: {Alumina or aluminates}
C04B35/62852 (Alumina or aluminates) appears on 94 US grants and 73 published applications in this corpus.
Search patents in C04B- Granted patents
- 94
- Published applications
- 73
- Assignees
- 81
- Inventors
- 259
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 8 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 2 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 2 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 5 |
| 2010 | 4 | 2 |
| 2011 | 1 | 3 |
| 2012 | 2 | 3 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 1 |
| 2016 | 0 | 4 |
| 2017 | 1 | 6 |
| 2018 | 4 | 10 |
| 2019 | 7 | 8 |
| 2020 | 5 | 3 |
| 2021 | 5 | 2 |
| 2022 | 2 | 2 |
| 2023 | 1 | 5 |
| 2024 | 5 | 5 |
| 2025 | 2 | 3 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for charging open pores in ceramic matrix composite, and ceramic matrix composite14 Apr 2026US 12,600,678 B2Ihi Aerospace Co., Ltd.
- Nanolaminate fiber interface coatings for composites9 Sep 2025US 12,410,107 B2Rtx Corporation
- Pre-impregnated rovings for composite material14 Jan 2025US 12,195,401 B2Centre National De La Recherche Scientifique
- Ceramic matrix composite manufacturing method and ceramic matrix composite26 Nov 2024US 12,151,981 B2Mitsubishi Heavy Industries Aero Engines, Ltd.
- Dry prepreg for ceramic matrix composites22 Oct 2024US 12,122,889 B23M Innovative Properties Company
- Fabrication of ceramic matrix composites13 Aug 2026US 2026/0234069 A1Rtx Corporation
- Ceramic matrix composite and method for producing the same9 Jul 2026US 2026/0193141 A1Tosoh Corporation
- Multi-phase ceramic matrix composite14 May 2026US 2026/0132089 A1Rtx Corporation
- Method for manufacturing a composite material part4 Dec 2025US 2025/0368582 A1Safran Ceramics
- Composite phosphor ceramic optical fiber with high luminous efficiency and high color rendering index, and preparation method therefor30 Oct 2025US 2025/0334731 A1Jiangsu Normal University
Most cited
By later US patents
- Process for producing fiber reinforced composite74US 5,876,659 AHitachi, Ltd. · 1999
- Article and method for making complex shaped preform and silicon carbide composite by melt infiltration73US 6,024,898 AGeneral Electric Company · 2000
- Methods of making composite ceramic articles having embedded filler71US 4,851,375 ALanxide Technology Company, LP · 1989
- Structural ceramic materials having refractory interface layers57US 4,837,230 AKaiser Aerotech · 1989
- Light metal matrix composite materials reinforced with silicon carbide fibers55US 4,134,759 AThe Research Institute for Iron, Steel and Other Metals of the Tohoku University · 1979