C04B 35/491
Based on lead zirconates and lead titanates
Official title: based on lead zirconates and lead titanates {, e.g. PZT}
C04B35/491 (Based on lead zirconates and lead titanates) appears on 451 US grants and 382 published applications in this corpus.
Search patents in C04B- Granted patents
- 451
- Published applications
- 382
- Assignees
- 213
- Inventors
- 993
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 7 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 12 | 0 |
| 1990 | 6 | 0 |
| 1991 | 9 | 0 |
| 1992 | 12 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 7 | 0 |
| 1996 | 5 | 0 |
| 1997 | 11 | 0 |
| 1998 | 10 | 0 |
| 1999 | 6 | 0 |
| 2000 | 10 | 0 |
| 2001 | 15 | 2 |
| 2002 | 17 | 13 |
| 2003 | 13 | 16 |
| 2004 | 11 | 21 |
| 2005 | 5 | 17 |
| 2006 | 13 | 26 |
| 2007 | 13 | 23 |
| 2008 | 16 | 30 |
| 2009 | 18 | 32 |
| 2010 | 23 | 25 |
| 2011 | 19 | 19 |
| 2012 | 19 | 14 |
| 2013 | 11 | 14 |
| 2014 | 16 | 19 |
| 2015 | 11 | 12 |
| 2016 | 12 | 18 |
| 2017 | 16 | 19 |
| 2018 | 13 | 8 |
| 2019 | 15 | 5 |
| 2020 | 5 | 7 |
| 2021 | 4 | 5 |
| 2022 | 3 | 7 |
| 2023 | 6 | 9 |
| 2024 | 2 | 10 |
| 2025 | 5 | 8 |
| 2026 | 10 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Piezoelectric materials and piezoelectric devices25 Aug 2026US 12,721,042 B2Beijing BOE Technology Development Co., Ltd.
- Dielectric for a capacitor and a method of manufacturing same4 Aug 2026US 12,700,541 B2Hyundai Motor Company
- High permittivity antiferroelectric and manufacturing method thereof16 Jun 2026US 12,655,067 B2Hyundai Motor Company
- Antiferroelectric containing dysprosium and a manufacturing method thereof9 Jun 2026US 12,649,693 B2Hyundai Motor Company
- Ceramic cutter material with a piezoelectric effect and preparation method thereof, and cutting tool19 May 2026US 12,635,418 B2Shandong University
- Ceramic speaker and manufacturing method therefor24 Sep 2026US 2026/0285766 A1Amosense Co., Ltd.
- Antiferroelectric containing dysprosium and a manufacturing method thereof17 Sep 2026US 2026/0274755 A1Hyundai Motor Company
- Composition, sheet-like product, multilayer body, method for manufacturing composition, and chip-type multilayer electronic component26 Mar 2026US 2026/0085012 A1Murata Manufacturing Co., Ltd.
- Piezoelectric material with perovskite structure for high operating temperatures and its manufacturing process4 Dec 2025US 2025/0368532 A1PI Ceramic GmbH
- Piezoelectric structure18 Sep 2025US 2025/0295035 A1
Most cited
By later US patents
- Cubic metal oxide thin film epitaxially grown on silicon138US 5,270,298 ABell Communications Research, Inc. · 1993
- Crystallographically aligned ferroelectric films usable in memories and method of crystallographically aligning perovskite films125US 5,155,658 ABell Communications Research, Inc. · 1992
- Method for making piezoelectric ceramic/polymer composite transducers122US 5,340,510 AMaterials Systems, Inc. · 1994
- Method for sintering ceramic tapes118US 6,447,712 B1University of Washington · 2002
- Method of manufacturing transparent high density ceramic material96US 5,032,304 ASumitomo Special Metal Co., Ltd. · 1991