Piezoelectric element, liquid discharge head, ultrasonic motor, and dust removing device
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United States of America Patent
Stats
-
Nov 21, 2017
Grant Date -
Mar 27, 2014
app pub date -
Dec 22, 2011
filing date -
Jan 7, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A piezoelectric element having an improved piezoelectric constant is provided, and a liquid discharge head, an ultrasonic motor, and a dust removing device, each of which uses the above piezoelectric element, are also provided. A piezoelectric element at least includes a pair of electrodes and a piezoelectric material provided in contact with the pair of electrodes, the piezoelectric material is formed of an aggregate of crystal grains containing barium titanate as a primary component, and among the crystal grains of the aggregate, crystal grains at least in contact with the electrodes have dislocation layers in the grains. A liquid discharge head, an ultrasonic motor, and a dust removing device each use the above piezoelectric element.
First Claim
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International Classification(s)
- 2011 Application Filing Year
- H01L Class
- 19146 Applications Filed
- 15997 Patents Issued To-Date
- 83.56 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H01L Class
- 0 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 21, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 21, 2029 |
