US4019074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
LiNbO3 saw device
Assignee: Toshiba Corp
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Filing: 1975-10-01
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Granted: 1977-04-19
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Expires: 1995-10-01
Abstract
Abstract An electro-mechanical transducer comprises a LiNbO 3 -piezoelectric substrate containing as an impurity at least one material selected from the group consisting of Ta, Ta 2 O 5 , Pd, SiO 2 , TiO 2 , V 2 O 5 and V, and at least two electro-mechanical transducing interdigital electrode pairs, provided on said LiNbO 3 -piezoelectric substrate.
Inventors
- 👤 Kimio Shibayama
- 👤 Kazuhiko Yamanouchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:54
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/02535; H03H9/02543; H03H9/02559; H10; H10N; H10N30/00; H10N30/80; H10N30/85; H10N30/853; H10N30/8542
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
65 words
An electro-mechanical transducer comprising a LiNbO 3 -piezoelectric substrate containing at least one impurity selected from the group consisting of Ta, Ta 2 O 5 , Pd, SiO 2 , TiO 2 , V 2 O 5 , V and a mixture of at least two of these impurities, and at least one electrode device for electro-mechanical conversion, provided on said LiNbO 3 -piezoelectric substrate.
Claim 2
Dependent Claim
65 words
An electro-mechanical transducer comprising a LiNbO 3 -piezoelectric substrate containing at least one impurity selected from the group consisting of Ta, Ta 2 O 5 , Pd, SiO 2 , TiO 2 , V 2 O 5 , V and a mixture of at least two of these impurities, and at least one electrode device for electro-mechanical conversion, provided on said LiNbO 3 -piezoelectric substrate.
Claim 3
Dependent Claim
49 words
An electro-mechanical transducer according to claim 1 characterized in that said electro-mechanical transducer is an elastic surface wave device which comprises a LiNbO 3 -piezoelectric substrate prepared by performing a rotated Y-131° cut, and first and second interdigital electrode pairs provided on said piezoelectric substrate separately from each other.
Claim 4
Dependent Claim
58 words
An electro-mechanical transducer according to claim 1 characterized in that said electro-mechanical transducer is an elastic surface wave device which comprises a glass substrate, first and second LiNbO 3 -piezoelectric substrates prepared by performing a rotated Y-131° cut, provided on said insulation substrate separately from each other, and interdigital electrode pairs provided on each of said piezoelectric substrates.
Claim 5
Dependent Claim
31 words
An electro-mechanical transducer according to claim 1 characterized in that said electro-mechanical transducer is a bulk wave device which comprises first and second electrodes provided on said LiNbO 3 -piezoelectric substrate.
References Cited (Backward Citations)
US3423686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-18 | 1980-10-18 | 1981-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-18 | 1984-10-18 | 1985-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-18 | 1988-10-18 | 1989-04-19 | $7700.00 | Window Closed / Lapsed |