C04B 2235/767
Hexagonal symmetry
Official title: Hexagonal symmetry, e.g. beta-Si3N4, beta-Sialon, alpha-SiC or hexa-ferrites
C04B2235/767 (Hexagonal symmetry) appears on 429 US grants and 514 published applications in this corpus.
Search patents in C04B- Granted patents
- 429
- Published applications
- 514
- Assignees
- 247
- Inventors
- 972
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 2 |
| 2002 | 5 | 4 |
| 2003 | 9 | 17 |
| 2004 | 12 | 23 |
| 2005 | 8 | 11 |
| 2006 | 14 | 29 |
| 2007 | 15 | 21 |
| 2008 | 14 | 27 |
| 2009 | 14 | 32 |
| 2010 | 17 | 28 |
| 2011 | 13 | 19 |
| 2012 | 18 | 30 |
| 2013 | 25 | 27 |
| 2014 | 26 | 20 |
| 2015 | 17 | 26 |
| 2016 | 26 | 15 |
| 2017 | 21 | 21 |
| 2018 | 16 | 19 |
| 2019 | 21 | 26 |
| 2020 | 14 | 20 |
| 2021 | 17 | 30 |
| 2022 | 22 | 21 |
| 2023 | 23 | 20 |
| 2024 | 12 | 15 |
| 2025 | 18 | 8 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Magnetic ball11 Aug 2026US 12,703,666 B2Saint-Gobain Centre De Recherches Et D ' Etudes Europeen
- Cordierite-indialite-pseudobrookite structured ceramic bodies, batch composition mixtures, and methods of manufacturing ceramic bodies therefrom16 Jun 2026US 12,655,064 B2Corning Incorporated
- Ferrite sintered magnet12 May 2026US 12,626,846 B2TDK Corporation
- Ultra-lightweight graphene-HBN nanoparticle aerogels17 Mar 2026US 12,577,169 B2Shandong Lutai Holding Group Co. Ltd
- Silicon nitride sintered substrate6 Jan 2026US 12,515,953 B2Tokuyama Corporation
- Silicon nitride sintered body and wear-resistant member using same4 Jun 2026US 2026/0152442 A1Niterra Materials Co., Ltd.
- Silicon nitride-type sintered body, bearing rolling element, silicon nitride-type blank ball, and bearing12 Feb 2026US 2026/0042709 A1AGC Inc.
- Ceramic structure5 Feb 2026US 2026/0035308 A1KYOCERA Corporation
- Turbine Engine Abradable Systems2 Oct 2025US 2025/0304500 A1Rtx Corporation
- Hexagonal boron nitride powder and method for producing the same25 Sep 2025US 2025/0296887 A1Tokuyama Corporation
Most cited
By later US patents
- Solid freeform fabrication methods283US 5,738,817 ARutgers, The State University · 1998
- Solid freeform fabrication methods223US 5,900,207 ARutgers, the State University Old Queens · 1999
- Light emitting device and illumination apparatus62US 7,253,446 B2Fujikura Ltd. · 2007
- Sputtering target, transparent conductive oxide, and process for producing the sputtering target56US 6,669,830 B1Idemitsu Kosan Co., Ltd. · 2003
- Oxide magnetic material, ferrite particle, sintered magnet, bonded magnet, magnetic recording medium and motor50US 6,139,766 ATDK Corporation · 2000