C04B 2237/343
Alumina or aluminates
C04B2237/343 (Alumina or aluminates) appears on 1,433 US grants and 1,285 published applications in this corpus.
Search patents in C04B- Granted patents
- 1,433
- Published applications
- 1,285
- Assignees
- 617
- Inventors
- 3,290
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 9 | 0 |
| 1978 | 8 | 0 |
| 1979 | 6 | 0 |
| 1980 | 10 | 0 |
| 1981 | 9 | 0 |
| 1982 | 9 | 0 |
| 1983 | 10 | 0 |
| 1984 | 6 | 0 |
| 1985 | 17 | 0 |
| 1986 | 19 | 0 |
| 1987 | 21 | 0 |
| 1988 | 27 | 0 |
| 1989 | 37 | 0 |
| 1990 | 23 | 0 |
| 1991 | 34 | 0 |
| 1992 | 36 | 0 |
| 1993 | 27 | 0 |
| 1994 | 28 | 0 |
| 1995 | 28 | 0 |
| 1996 | 22 | 0 |
| 1997 | 23 | 0 |
| 1998 | 18 | 0 |
| 1999 | 31 | 0 |
| 2000 | 20 | 0 |
| 2001 | 24 | 8 |
| 2002 | 26 | 47 |
| 2003 | 43 | 42 |
| 2004 | 35 | 47 |
| 2005 | 26 | 35 |
| 2006 | 27 | 32 |
| 2007 | 23 | 33 |
| 2008 | 12 | 31 |
| 2009 | 12 | 50 |
| 2010 | 29 | 47 |
| 2011 | 26 | 37 |
| 2012 | 38 | 46 |
| 2013 | 26 | 56 |
| 2014 | 29 | 51 |
| 2015 | 51 | 60 |
| 2016 | 36 | 66 |
| 2017 | 52 | 71 |
| 2018 | 42 | 62 |
| 2019 | 48 | 62 |
| 2020 | 56 | 69 |
| 2021 | 49 | 70 |
| 2022 | 34 | 68 |
| 2023 | 43 | 63 |
| 2024 | 70 | 56 |
| 2025 | 52 | 53 |
| 2026 | 30 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Metal-ceramic substrate, method for the production thereof, and module28 Jul 2026US 12,692,202 B2Heraeus Electronics GmbH & Co. KG
- Multilayer sintered ceramic body14 Jul 2026US 12,679,777 B2Heraeus Covantics North America LLC
- Passive Q-switched lasers and methods for operation and manufacture thereof7 Jul 2026US 12,676,453 B2pTriEye Ltd.
- Ceramic joint body, method of manufacturing the same, and mixing member for liquid chromatography9 Jun 2026US 12,650,413 B2KYOCERA Corporation
- Polymer-derived ceramic thin film thermocouple and preparation method thereof9 Jun 2026US 12,652,955 B2
- Improved aluminum-containing nitride ceramic matrix composite, method of making, and method of use20 Aug 2026US 2026/0242660 A1SLT Technologies, Inc.
- Carbon-ceramic composites, electrode comprising the same and secondary battery comprising the electrode20 Aug 2026US 2026/0245988 A1SK On Co., Ltd.
- Bonded body13 Aug 2026US 2026/0234066 A1NGK Corporation
- Copper-ceramic substrate with an upper face which can be sintered13 Aug 2026US 2026/0240018 A1Heraeus Electronics GmbH & Co. KG
- Porous ceramic layer, porous ceramic layered body and separation membrane30 Jul 2026US 2026/0216665 A1Sumitomo Chemical Company, Limited
Most cited
By later US patents
- Halogen gas plasma-resistive members and method for producing the same, laminates, and corrosion-resistant members455US 6,783,875 B2NGK Insulators, Ltd. · 2004
- Electrostatic chuck having gas cavity and method244US 6,310,755 B1APPLIED Materials.Inc. · 2001
- Integrated multilayered microfludic devices and methods for making the same242US 6,572,830 B1Motorola, Inc. · 2003
- Multilayered microfluidic DNA analysis system and method238US 6,544,734 B12003
- Multilayered ferroelectric composite waveguides216US 5,830,591 A1998