Longitudinal quartz crystal resonator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 22, 1991
Issued Date -
N/A
app pub date -
Jul 13, 1990
filing date -
Jun 2, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A longitudinal quartz crystal resonator which creates an extremely small amount of vibrational leakage. Quartz is a highly stable material physically and chemically. A so-called quartz crystal resonator formed of quartz therefore has a low series resistance and a high Q-value. Such excellent characteristics are, however, obtained on the condition that the quartz crystal resonator is designed so as to produce a less leakage of vibration. Energy of a vibrational portion is trapped within itself by contriving and improving a configuration of a supporting portion of the longitudinal quartz crystal resonator which is incorporated with the vibrational portion and the supporting portion by an etching method.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully