US3771073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic devices using germanium-containing chalogenide glasses
Assignee: AT&T Inc
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Filing: 1971-12-20
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Granted: 1973-11-06
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Expires: 1991-12-20
Abstract
Abstract Ultrasonic devices are described which are dependent for their operation on certain germanium-containing compositions of the chalcogenide family of glasses. The ultrasonic devices exhibit acoustic losses comparable to those of devices made from fused silica.
Inventors
- 👤 J Krause
- 👤 C Kurkjian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:30
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/0009; C; C03; C03C; C03C3/00; C03C3/32; C03C3/321; H; H03; H03H; H03H9/00; H03H9/30; H03H9/36; Y; Y10; Y10S; Y10S65/00; Y10S65/15
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
134 words
An elastic wave device comprising a glass medium along which elastic waves are transmitted, means for establishing elastic waves in said medium and means for detecting said waves after they are transmitted along said medium, characterized in that said transmission medium is a glass having a composition within an area of the ternary diagram for germanium, sulfur and arsenic formed by connecting with straight lines the following point pairs: 44 Ge, 29 S, 27 As - 25 Ge, 29 S, 46 As 25 Ge, 29 S, 46 As - 25 Ge, 73 S, 2 AS 25 Ge, 73 S, 2 As - 40 Ge, 58 S, 2 As 40 Ge, 58 S, 2 As - 44 Ge, 50 S, 6 As 44 Ge, 50 S, 6 As - 44 Ge, 29 S, 27 As.
Claim 2
Dependent Claim
134 words
An elastic wave device comprising a glass medium along which elastic waves are transmitted, means for establishing elastic waves in said medium and means for detecting said waves after they are transmitted along said medium, characterized in that said transmission medium is a glass having a composition within an area of the ternary diagram for germanium, selenium and phosphorus formed by connecting with straight lines the following point pairs: 40 Ge, 48 Se, 12 P - 33 Ge, 47 Se, 20 P 33 Ge, 47 Se, 20 P - 25 Ge, 52 Se, 23 P 25 Ge, 52 Se, 23 P - 25 Ge, 73 Se, 2 P 25 Ge, 73 Se, 2 P - 42 Ge, 56 Se, 2 P 42 Ge, 56 Se, 2 P - 40 Ge, 48 Se, 12 P.
Claim 3
Dependent Claim
134 words
An elastic wave device comprising a glass medium along which elastic waves are transmitted, means for establishing elastic waves in said medium and means for detecting said waves after they are transmitted along said medium, characterized in that said transmission medium is a glass having a composition within an area of the ternary diagram for germanium, sulfur and phosphorus formed by connecting with straight lines the following point pairs: 40 Ge, 54 S, 6 P - 35 Ge, 55 S, 10 P 35 Ge, 55 S, 10 P - 33 Ge, 58 S, 9 P 33 Ge, 58 S, 9 P - 33 Ge, 66 S, 1 P 33 Ge, 66 S, 1 P - 40 Ge, 59 S, 1 P 40 Ge, 59 S, 1 P - 40 Ge, 54 S, 6 P.
Claim 4
Dependent Claim
134 words
An elastic wave device comprising a glass medium along which elastic waves are transmitted, means for establishing elastic waves in said medium and means for detecting said waves after they are transmitted along said medium, characterized in that said transmission medium is a glass having a composition within an area of the ternary diagram for germanium, selenium and antimony formed by connecting with straight lines the following point pairs: 37 Ge, 57 Se, 6 Sb - 35 Ge, 52 Se, 13 Sb 35 Ge, 52 Se, 13 Sb - 25 Ge, 52 Se, 23 Sb 25 Ge, 52 Se, 23 Sb - 25 Ge, 73 Se, 2 Sb 25 Ge, 73 Se, 2 Sb - 34 Ge, 64 Se, 2 Sb 34 Ge, 64 Se, 2 Sb - 37 Ge, 57 Se, 6 Sb.
Claim 5
Dependent Claim
121 words
An elastic wave device comprising a glass medium along which elastic waves are transmitted, means for establishing elastic waves in said medium and means for detecting said waves after they are transmitted along said medium, characterized in that said transmission medium is a glass having a composition within an area of the ternary diagram for germanium, sulfur and antimony formed by connecting with straight lines the following point pairs: 35 Ge, 63 S, 2 Sb - 35 Ge, 55 S, 10 Sb 35 Ge, 55 S, 10 Sb - 25 Ge, 55 S, 20 Sb 25 Ge, 55 S, 20 Sb - 25 Ge, 73 S, 2 Sb 25 Ge, 73 S, 2 Sb - 35 Ge, 63 S, 2 Sb.
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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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |