US4126839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface acoustic wave apparatus
Assignee: Sony Corp
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Filing: 1977-02-15
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Granted: 1978-11-21
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Expires: 1997-02-15
Abstract
Abstract A surface acoustic wave apparatus is disclosed in which a conductive earth pattern is formed on almost all the upper surface of a header, a surface acoustic wave element is provided on the header through the conductive earth pattern, and the conductive earth pattern is separated between an input side earth pin and an output side earth pin.
Inventors
- 👤 Hiroshi Yamanoi
- 👤 Tomosaburo Kitamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:45
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/05; H03H9/058; H03H9/02535; H03H9/02818; H03H9/02874
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
162 words
A surface acoustic wave apparatus comprising: (a) a header made of insulating material; (b) an earth pattern made of conductive material and coated on almost all the upper surface of said header; (c) a surface acoustic wave element comprising a substrate having a major surface thereof, an input transducer provided on a first portion of said major surface, an output transducer provided on a second portion of said major surface, said surface acoustic wave element being mounted on said header, the surface opposite to said major surface of said substrate being in contact with said earth pattern; (d) a first earth pin provided through said header at a side of said first portion of said surface acoustic wave element; (e) a second earth pin provided through said header at a side of said second portion of said surface acoustic wave element; and (f) a cut-out portion formed through said earth pattern separating said earth pattern between said first and second earth pins.
Claim 2
Dependent Claim
162 words
A surface acoustic wave apparatus comprising: (a) a header made of insulating material; (b) an earth pattern made of conductive material and coated on almost all the upper surface of said header; (c) a surface acoustic wave element comprising a substrate having a major surface thereof, an input transducer provided on a first portion of said major surface, an output transducer provided on a second portion of said major surface, said surface acoustic wave element being mounted on said header, the surface opposite to said major surface of said substrate being in contact with said earth pattern; (d) a first earth pin provided through said header at a side of said first portion of said surface acoustic wave element; (e) a second earth pin provided through said header at a side of said second portion of said surface acoustic wave element; and (f) a cut-out portion formed through said earth pattern separating said earth pattern between said first and second earth pins.
Claim 3
Dependent Claim
32 words
A surface acoustic wave apparatus as claimed in claim 1, wherein said cut-out portion is located to cross substantially the center of said earth pattern between said input and output sides thereof.
Claim 4
Dependent Claim
29 words
A surface acoustic wave apparatus according to claim 1, which further comprises a second cut-out portion through said earth pattern located to divide said earth pattern into four portions.
Claim 5
Dependent Claim
28 words
A surface acoustic wave apparatus as claimed in claim 3, in which two pairs of said divided portions facing across said second cut-out portion are electrically connected, respectively.
Claim 6
Dependent Claim
60 words
A surface acoustic wave apparatus as claimed in claim 4, in which one pair of said divided portions are electrically connected by a coupling portion provided at one end of said second cut-out portion, and the other pair of said divided portions are electrically connected by a coupling portion provided at the other end of said second cut-out portion, respectively.
Claim 7
Dependent Claim
22 words
A surface acoustic wave apparatus as claimed in claim 3, in which said second cut-out portion intersects said first mentioned cut-out portion.
Claim 8
Dependent Claim
27 words
A surface acoustic wave apparatus as claimed in claim 6, wherein said second cut-out portion intersects said first mentioned cut-out portion in the shape of a cross.
Claim 9
Dependent Claim
26 words
A surface acoustic wave apparatus as claimed in claim 6, wherein said second cut-out portion lies in the direction in which a surface acoustic wave propagates.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-20 | 1982-05-22 | 1982-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-20 | 1986-05-22 | 1986-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-20 | 1990-05-22 | 1990-11-21 | $7700.00 | Window Closed / Lapsed |