US3975755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable non-crystalline material for switching devices
Assignee: Xerox Corp
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Filing: 1975-03-17
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Granted: 1976-08-17
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Expires: 1995-03-17
Abstract
Abstract A switching device having as the active switching element a material with a band gap between 0.6 and 1.2 eV and a mean coordination number of 4. These parameters provide a material having a glass transition temperature that is relatively high such that the material is resistant to devitrification. Amorphous (a-) CdAs 2 is the most promising active switching material having the parameters, and a method of making thin films of a-CdAs 2 by open source evaporation is disclosed.
Inventors
- 👤 David D. Thornburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:08
CPC Classifications
H; H10; H10N; H10N70/00; H10N70/20; H10N70/011; H10N70/021; H10N70/026; H10N70/801; H10N70/821; H10N70/826; H10N70/881; Y; Y10; Y10S; Y10S257/00; Y10S257/912
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
25 words
A non-rectifying solid state switching device comprising: a body of amorphous CdAs 2 , and at least two spaced electrodes in contact with said body.
Claim 2
Dependent Claim
25 words
A non-rectifying solid state switching device comprising: a body of amorphous CdAs 2 , and at least two spaced electrodes in contact with said body.
Claim 3
Dependent Claim
39 words
A non-rectifying solid state switching device comprising: a thin film of amorphous CdAs 2 , and at least two spaced electrodes in contact with opposed surfaces of said thin film; said thin film being less than 10 microns thick.
Claim 4
Dependent Claim
39 words
A non-rectifying solid state switching device comprising: a thin film of amorphous CdAs 2 , and at least two spaced electrodes in contact with opposed surfaces of said thin film; said thin film being less than 10 microns thick.
References Cited (Backward Citations)
US3432729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-17 | 1980-02-16 | 1980-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-17 | 1984-02-16 | 1984-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-17 | 1988-02-16 | 1988-08-17 | $7700.00 | Window Closed / Lapsed |