US3655255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic-optic ultrasonic devices using germanium containing chalcogenide glasses
Assignee: AT&T Inc
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Filing: 1970-07-13
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Granted: 1972-04-11
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Expires: 1990-07-13
Abstract
Abstract Acousto-optic and ultrasonic devices are described which are dependent for their operation on certain germanium-containing compositions of the chalcogenide family of glasses. The acoustooptic devices made from these glasses exhibit high efficiencies when compared to those of devices constructed of earlier materials. The ultrasonic devices exhibit acoustic losses comparable to those of devices made from fused silica.
Inventors
- 👤 John Thorvald Krause
- 👤 Charles Robert Kurkjian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:22
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/32; C03C3/321; G; G02; G02F; G02F1/00; G02F1/0009; H; H03; H03H; H03H9/00; H03H9/30; H03H9/36
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
99 words
The device of claim 1 in which the acousto-optic material has a composition within an area of the ternary diagram for germanium, selenium and arsenic formed by connecting with straight lines the following point pairs: 43 Ge, 27 Se, 30 As - 40 Ge, 20 Se, 40 As 40 Ge, 20 Se, 40 As -25 Ge, 20 Se, 55 As 25 Ge, 20 Se, 55 As - 25 Ge, 73 Se, 2 As 25 Ge, 73 Se, 2 As - 42 Ge, 56 Se, 2 As 42 Ge, 56 Se, 2 As - 43 Ge, 27 Se, 30 As.
Claim 2
Dependent Claim
18 words
The device of claim 2 in which said material contains from 2 to 5 atom percent of arsenic.
Claim 3
Dependent Claim
100 words
The device of claim 1 in which the acousto-optic material has 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 4
Dependent Claim
18 words
The device of claim 4 in which the material contains from 2 to 5 atom percent of arsenic.
Claim 5
Dependent Claim
100 words
The device of claim 1 in which the acousto-optic material has 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 6
Dependent Claim
99 words
The device of claim 1 in which the acousto-optic material has 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 7
Dependent Claim
99 words
The device of claim 1 in which the acousto-optic material has 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 8
Dependent Claim
87 words
The device of claim 1 in which the acousto-optic material has 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.
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) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |