C30B 29/20
Aluminium oxides
C30B29/20 (Aluminium oxides) appears on 287 US grants and 359 published applications in this corpus.
Search patents in C30B- Granted patents
- 287
- Published applications
- 359
- Assignees
- 220
- Inventors
- 805
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 7 | 0 |
| 1996 | 8 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 1 |
| 2003 | 3 | 4 |
| 2004 | 5 | 9 |
| 2005 | 5 | 6 |
| 2006 | 4 | 8 |
| 2007 | 2 | 5 |
| 2008 | 9 | 12 |
| 2009 | 2 | 11 |
| 2010 | 5 | 8 |
| 2011 | 4 | 18 |
| 2012 | 8 | 19 |
| 2013 | 5 | 12 |
| 2014 | 10 | 40 |
| 2015 | 6 | 26 |
| 2016 | 18 | 25 |
| 2017 | 19 | 32 |
| 2018 | 21 | 19 |
| 2019 | 22 | 12 |
| 2020 | 13 | 19 |
| 2021 | 4 | 15 |
| 2022 | 14 | 15 |
| 2023 | 13 | 14 |
| 2024 | 9 | 9 |
| 2025 | 14 | 12 |
| 2026 | 5 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for the surface treatment of a jewel, in particular for the watchmaking industry4 Aug 2026US 12,698,558 B2Comadur SA
- Method of manufacturing semiconductor device, semiconductor device, and apparatus employing the same28 Apr 2026US 12,615,974 B2Samsung Electronics Co., Ltd.
- Plate-like alumina particle and method for manufacturing plate-like alumina particle17 Feb 2026US 12,552,715 B2DIC Corporation
- Alpha alumina with high purity and high relative density, a method for its production and its use27 Jan 2026US 12,534,378 B2
- Systems for preparing crystals20 Jan 2026US 12,529,161 B2Meishan Boya Advanced Materials Co., Ltd.
- Method for the controlled deposition of an oxide layer of a target oxide on a substrate in a tle system, and tle system24 Sep 2026US 2026/0286568 A1Max-Planck-Gesellschaft Zur FöRderung Der Wissenschaften E. V.
- Process for manufacturing a sapphire timepiece element, and timepiece element27 Aug 2026US 2026/0252034 A1Rolex SA
- Composite substrates for the epitaxial growth of thin films and method for fabricating such substrates20 Aug 2026US 2026/0242982 A1Max-Planck-Gesellschaft Zur FöRderung Der Wissenschaften E. V.
- Fins on crucible or gussets on refractory lining for facilitating exclusion of impurities from a boule13 Aug 2026US 2026/0234831 A1Siemens Medical Solutions USA, Inc.
- Enclosed crystal growth12 Feb 2026US 2026/0043168 A1Luxium Solutions, LLC
Most cited
By later US patents
- Apparatus for performing growth of compound thin films918US 4,389,973 AOy Lohja AB · 1983
- Method for performing growth of compound thin films750US 4,413,022 ACanon Kabushiki Kaisha · 1983
- Long persistent phosphors and persistent energy transfer technique225US 6,953,536 B2University of Georgia Research Foundation, Inc. · 2005
- Method of forming thin film using atomic layer deposition method207US 6,576,053 B1Samsung Electronics Co., Ltd. · 2003
- Solid state thermal conversion of polycrystalline alumina to sapphire using a seed crystal78US 5,549,746 AGeneral Electric Company · 1996