C04B 2235/3248
Zirconates or hafnates
Official title: Zirconates or hafnates, e.g. zircon
C04B2235/3248 (Zirconates or hafnates) appears on 496 US grants and 618 published applications in this corpus.
Search patents in C04B- Granted patents
- 496
- Published applications
- 618
- Assignees
- 265
- Inventors
- 1,262
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 4 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 1 |
| 2002 | 5 | 6 |
| 2003 | 11 | 25 |
| 2004 | 12 | 20 |
| 2005 | 5 | 17 |
| 2006 | 15 | 18 |
| 2007 | 16 | 20 |
| 2008 | 5 | 24 |
| 2009 | 17 | 28 |
| 2010 | 20 | 19 |
| 2011 | 17 | 22 |
| 2012 | 16 | 15 |
| 2013 | 15 | 17 |
| 2014 | 14 | 28 |
| 2015 | 15 | 37 |
| 2016 | 30 | 31 |
| 2017 | 39 | 57 |
| 2018 | 25 | 24 |
| 2019 | 40 | 32 |
| 2020 | 34 | 22 |
| 2021 | 23 | 30 |
| 2022 | 9 | 30 |
| 2023 | 17 | 27 |
| 2024 | 23 | 23 |
| 2025 | 16 | 22 |
| 2026 | 14 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sagger for sintering lithium composite transition metal oxide and preparation method thereof4 Aug 2026US 12,698,242 B2Guangdong Brunp Recycling Technology Co., Ltd.
- Dielectric for a capacitor and a method of manufacturing same4 Aug 2026US 12,700,541 B2Hyundai Motor Company
- Method for manufacturing conductive particles for conducting ions and electrons of positive or negative electrode28 Jul 2026US 12,692,197 B1Shenzhen TXD Technology Co., Ltd.
- Oxynitride ceramic material with lithium addition14 Jul 2026US 12,683,189 B1King Fahd University of Petroleum and Minerals
- Dielectric composition and multilayer ceramic electronic device2 Jun 2026US 12,643,825 B2TDK Corporation
- Dielectric ceramic, method of preparing the same, and multilayer ceramic capacitor including the same8 Oct 2026US 2026/0311933 A1Samsung Electro-Mechanics Co., Ltd.
- Dielectric composition, dielectric element, electronic device, and multilayer electronic device1 Oct 2026US 2026/0296978 A1TDK Corporation
- Dielectric ceramic composition and multilayer ceramic electronic device1 Oct 2026US 2026/0296979 A1TDK Corporation
- Multilayer ceramic electronic device24 Sep 2026US 2026/0285764 A1TDK Corporation
- Dielectric ceramic composition and multilayer ceramic electronic device24 Sep 2026US 2026/0285765 A1TDK Corporation
Most cited
By later US patents
- Method of producing high-temperature parts by way of low-temperature sintering172US 5,284,695 ABoard of Regents, The University of Texas System · 1994
- Very high purity fine powders and methods to produce such powders142US 6,569,397 B12003
- Al2O3-Y2O3-ZrO2/HfO2 materials, and methods of making and using the same131US 7,507,268 B23M Innovative Properties Company · 2009
- High purity fine metal powders and methods to produce such powder117US 6,786,950 B2NanoProducts Corporation · 2004
- Method of making amorphous materials and ceramics111US 7,168,267 B23M Innovative Properties Company · 2007