US4054940A
Expired / Lapsed
US
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Three conductivity state circuit element
Assignee: Thales SA
•
Filing: 1975-01-07
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Granted: 1977-10-18
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Expires: 1995-01-07
Abstract
Abstract A device possessing three conduction states comprises two electrodes connected with one another through the agency of a compound in the form C x H y in which there are held in suspension particles of vanadium oxide, VO 2 , the proportion by volume being of the order of 7%.
Inventors
- 👤 Francois Buchy
- 👤 Pierre Merenda
- 👤 Jean Pierre D'Haenens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:00
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
70 words
A three conduction state circuit element, comprising one input electrode and one output electrode and a pasted composite connecting these electrodes to each other a said composite being formed by particles in suspension in a binder, and said binder undergoing a sudden increase in volume, at a first well-defined temperature, said substance changing from the insulating to the conducting state at a second given temperature, lower than said first temperature.
Claim 2
Dependent Claim
70 words
A three conduction state circuit element, comprising one input electrode and one output electrode and a pasted composite connecting these electrodes to each other a said composite being formed by particles in suspension in a binder, and said binder undergoing a sudden increase in volume, at a first well-defined temperature, said substance changing from the insulating to the conducting state at a second given temperature, lower than said first temperature.
Claim 3
Dependent Claim
19 words
An element as claimed in claim 1, wherein the binder has the chemical formula C 36 H 74 .
Claim 4
Dependent Claim
15 words
An element as claimed in claim 2, wherein the particles are particles of vanadium oxide.
Claim 5
Dependent Claim
22 words
An element as claimed in claim 3, wherein the particles of vanadium oxide occupy about 7% of the volume of the binder.
References Cited (Backward Citations)
US1863253A
Cited
GB377238A
Cited
US2107742A
Cited
US3149298A
Cited
US3399330A
Cited
US3588638A
Cited
US3614480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-17 | 1981-04-18 | 1981-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-17 | 1985-04-18 | 1985-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-17 | 1989-04-18 | 1989-10-18 | $7700.00 | Window Closed / Lapsed |