US4697116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezoelectric vibrator
Assignee: Murata Manufacturing Co Ltd
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Filing: 1983-01-06
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Granted: 1987-09-29
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Expires: 2003-01-06
Abstract
Abstract A piezoelectric vibrator comprises a mechanical vibrating member having, an aluminum layer formed on a surface of the vibrating member, and a piezoelectric transducer overlaying the aluminum layer.
Inventors
- 👤 Takeshi Nakamura
- 👤 Hiroshi Nishiyama
- 👤 Ikuo Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:42
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/24; G; G10; G10G; G10G7/00; G10G7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A piezoelectric vibrator, comprising: a mechanical vibrating member made of elinvar; an aluminum layer having first and second opposed surfaces, said first surface being located on one surface of said mechanical vibrating member; a piezoelectric layer having first and second opposed surfaces, said first surface of said piezoelectric layer being located on said second surface of said aluminum layer; and an electrode layer located on said second surface of said piezoelectric layer.
Claim 2
Dependent Claim
72 words
A piezoelectric vibrator, comprising: a mechanical vibrating member made of elinvar; an aluminum layer having first and second opposed surfaces, said first surface being located on one surface of said mechanical vibrating member; a piezoelectric layer having first and second opposed surfaces, said first surface of said piezoelectric layer being located on said second surface of said aluminum layer; and an electrode layer located on said second surface of said piezoelectric layer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-09-28 | 1991-03-30 | 1991-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-28 | 1995-03-30 | 1995-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-28 | 1999-03-30 | 1999-09-29 | $7700.00 | Window Closed / Lapsed |