H02N 2/00
Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
Official title: Electric machines in general using piezoelectric effect, electrostriction or magnetostriction (generating mechanical vibrations in general B06B; piezoelectric, electrostrictive or magnetostrictive devices in general H10N30/00)
H02N2/00 (Electric machines in general using piezoelectric effect, electrostriction or magnetostriction) appears on 4,994 US grants and 4,804 published applications in this corpus.
Search patents in H02N- Granted patents
- 4,994
- Published applications
- 4,804
- Assignees
- 1,603
- Inventors
- 7,785
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 5 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 14 | 0 |
| 1984 | 14 | 0 |
| 1985 | 21 | 0 |
| 1986 | 20 | 0 |
| 1987 | 34 | 0 |
| 1988 | 45 | 0 |
| 1989 | 47 | 0 |
| 1990 | 54 | 0 |
| 1991 | 62 | 0 |
| 1992 | 77 | 0 |
| 1993 | 60 | 0 |
| 1994 | 56 | 0 |
| 1995 | 66 | 0 |
| 1996 | 55 | 0 |
| 1997 | 58 | 0 |
| 1998 | 73 | 0 |
| 1999 | 68 | 0 |
| 2000 | 101 | 0 |
| 2001 | 98 | 42 |
| 2002 | 102 | 89 |
| 2003 | 61 | 67 |
| 2004 | 85 | 116 |
| 2005 | 73 | 150 |
| 2006 | 109 | 138 |
| 2007 | 108 | 151 |
| 2008 | 131 | 189 |
| 2009 | 121 | 188 |
| 2010 | 175 | 224 |
| 2011 | 165 | 238 |
| 2012 | 148 | 231 |
| 2013 | 181 | 230 |
| 2014 | 169 | 222 |
| 2015 | 183 | 246 |
| 2016 | 196 | 244 |
| 2017 | 221 | 272 |
| 2018 | 191 | 239 |
| 2019 | 247 | 270 |
| 2020 | 209 | 231 |
| 2021 | 185 | 247 |
| 2022 | 259 | 218 |
| 2023 | 223 | 213 |
| 2024 | 170 | 158 |
| 2025 | 154 | 122 |
| 2026 | 70 | 69 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Bearing component with piezoelectric core29 Sep 2026US 12,747,757 B2The Timken Company
- Drive device, drive system, control system and drive motor29 Sep 2026US 12,747,778 B2Physik Instrumente (Pi) GmbH & Co. KG
- Stored energy release triggered by piezoelectric element22 Sep 2026US 12,744,476 B2Mission Systems Davenport Inc.
- Energy harvesting with a micro-electro-mechanical system (MEMS)1 Sep 2026US 12,726,142 B1Duality Reality Energy, LLC
- Electricity generating shoe assembly25 Aug 2026US 12,714,182 B2
- Flexible Smart Sensor Decal with Integrated Wireless Communication and Energy Harvesting1 Oct 2026US 2026/0298859 A1
- Piezoelectric driving device and camera module1 Oct 2026US 2026/0299249 A1Alps Alpine Co., Ltd.
- Energy harvesting apparatus and method1 Oct 2026US 2026/0302831 A1Nditive3D Inc.
- Flight control surface having lithiated carbon fibers struts24 Sep 2026US 2026/0285473 A1Airbus Americas, Inc.
- Apparatus and methods for image-guided robotic surgical interventions10 Sep 2026US 2026/0266924 A1Worcester Polytechnic Institute
Most cited
By later US patents
- Electroactive polymer devices1,577US 6,545,384 B1SRI International · 2003
- Foldable lens delivery system1,445US 5,607,433 AMicro Medical Devices, Inc. · 1997
- High-efficiency, large stroke electromechanical actuator1,075US 5,907,211 AMassachusetts Institute of Technology · 1999
- Driving apparatus381US 7,408,288 B2Konica Minolta Holdings, Inc. · 2008
- Longitudinal-effect type laminar piezoelectric/electrostrictive driver, and printing actuator using the driver379US 5,126,618 ABrother Kogyo Kabushiki Kaisha · 1992