US3978436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface acoustic wave device and method of making same
Assignee: RCA Corp
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Filing: 1975-11-10
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Granted: 1976-08-31
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Expires: 1995-11-10
Abstract
Abstract A piezoelectric body has a transducer on one surface. The transducer includes an electrically insulating body on the piezoelectric body; the electrically insulating body has a surface relief pattern on a surface which is opposite the piezoelectric body. An electrically conductive layer is on the electrically insulating body on the surface having the relief pattern thereon. The transducer can be formed by means of a master body. A surface of the master body, having a relief pattern thereon, is pressed against the electrically insulating body to form a relief pattern on the electrically insulating body. The electrically conductive layer is then formed on the electrically insulating body on the surface having the relief pattern thereon.
Inventors
- 👤 Roger Casanova Alig
- 👤 Lubomyr Stephen Onyshkevych
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:37
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/02535; H03H9/02818; H03H9/02866; H03H9/02543; H03H9/02574; Y; Y10; Y10T; Y10T29/00; Y10T29/42
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
56 words
A surface acoustic wave device comprising: a piezoelectric body; and a transducer on one surface of said piezoelectric body, said transducer having an electrically insulating body on said piezoelectric body with a surface relief pattern on a surface opposite said piezoelectric body, a layer of conductive material on said surface, having the surface relief pattern thereon.
Claim 2
Dependent Claim
56 words
A surface acoustic wave device comprising: a piezoelectric body; and a transducer on one surface of said piezoelectric body, said transducer having an electrically insulating body on said piezoelectric body with a surface relief pattern on a surface opposite said piezoelectric body, a layer of conductive material on said surface, having the surface relief pattern thereon.
Claim 3
Dependent Claim
19 words
A surface acoustic wave device in accordance with claim 1, wherein said layer of conductive material is a metal.
Claim 4
Dependent Claim
17 words
A surface acoustic wave device in accordance with claim 2, wherein said surface relief pattern is periodic.
Claim 5
Dependent Claim
25 words
A surface acoustic wave device in accordance with claim 3 further comprising a planar electrode on a surface of said piezoelectric body opposite said transducer.
Claim 6
Dependent Claim
36 words
A surface acoustic wave device in accordance with claim 4 further comprising a substrate, said piezoelectric body on said substrate with said planar electrode interposed in a sandwich fashion between said piezoelectric body and said substrate.
Claim 7
Dependent Claim
20 words
A surface acoustic wave device in accordance with claim 5 wherein said substrate is made from an electrically insulating material.
Claim 8
Independent Claim
86 words
A method of making a surface acoustic wave device, from a master body having a surface relief pattern on one surface of said master body, wherein said method comprises the steps of: providing a body of electrically insulating material on a body of piezoelectric material; pressing said one surface of said master body against said insulating body on a surface opposite said piezoelectric body, to form a relief pattern thereon; and forming a layer of electrically conductive material on said relief pattern of said insulating body.
Claim 9
Independent Claim
86 words
A method of making a surface acoustic wave device, from a master body having a surface relief pattern on one surface of said master body, wherein said method comprises the steps of: providing a body of electrically insulating material on a body of piezoelectric material; pressing said one surface of said master body against said insulating body on a surface opposite said piezoelectric body, to form a relief pattern thereon; and forming a layer of electrically conductive material on said relief pattern of said insulating body.
Claim 10
Dependent Claim
18 words
The method in accordance with claim 7 wherein said surface relief pattern of said master body is periodic.
Claim 11
Dependent Claim
16 words
The method in accordance with claim 8 wherein said layer of conductive material is a metal.
References Cited (Backward Citations)
US3942048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |