US5771148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intercalation-based voltage variable capacitor
Assignee: Motorola Solutions Inc
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Filing: 1995-11-17
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Granted: 1998-06-23
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Expires: 2015-11-17
Abstract
Abstract A voltage variable capacitor (VVC) is made by placing an intercalation compound between two electrodes of a capacitor. The VVC has a reservoir of an intercalant in proximity with the intercalation compound. The two materials are chosen from those known to exhibit the intercalation reaction. The extent of the intercalation reaction is controlled by applying a voltage to the intercalant reservoir and the intercalation compound. A variable capacitor is created by applying a signal to the device and appropriately controlling the .di-elect cons. of the device by using the input control voltages.
Inventors
- 👤 James Lynn Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:49
CPC Classifications
H; H01; H01G; H01G7/00; H01G7/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
62 words
A voltage variable capacitor, comprising: a pair of charge storage members; a dielectric material having an electrolyte in intimate contact therewith, the dielectric material comprising an intercalation compound and the dielectric material disposed between the pair of charge storage members; a source electrode for providing a source of ions to intercalate the dielectric material; and a control electrode for the source electrode.
Claim 2
Dependent Claim
62 words
A voltage variable capacitor, comprising: a pair of charge storage members; a dielectric material having an electrolyte in intimate contact therewith, the dielectric material comprising an intercalation compound and the dielectric material disposed between the pair of charge storage members; a source electrode for providing a source of ions to intercalate the dielectric material; and a control electrode for the source electrode.
Claim 3
Dependent Claim
34 words
The voltage variable capacitor as described in claim 1, wherein the electrolyte is one or more materials selected from the group consisting of LiClO 4 dissolved in propylene carbonate, and potassium dissolved in acetonitrile.
Claim 4
Dependent Claim
50 words
A voltage variable capacitor, comprising: a pair of charge storage members; a dielectric material, comprising an intercalation compound, disposed between the pair of charge storage members; a source electrode for providing a source of Li + ions to intercalate the dielectric material; and a control electrode for the source electrode.
Claim 5
Dependent Claim
50 words
A voltage variable capacitor, comprising: a pair of charge storage members; a dielectric material, comprising an intercalation compound, disposed between the pair of charge storage members; a source electrode for providing a source of Li + ions to intercalate the dielectric material; and a control electrode for the source electrode.
Claim 6
Dependent Claim
24 words
The voltage variable capacitor as described in claim 3, wherein the intercalation compound is a lithium-electro-intercalated TiS 2 compound or a lithium-intercalated CuO compound.
Claim 7
Dependent Claim
81 words
A voltage variable capacitor, comprising: a pair of charge storage plates; a lithium-electro-intercalated TiS 2 compound disposed between and in intimate contact with the pair of charge storage plates; a nonaqueous electrolyte comprising LiClO 4 dissolved in propylene carbonate arranged to be in contact with the lithium-electro-intercalated TiS 2 compound; a source electrode arranged to be in contact with the nonaqueous electrolyte; and a control electrode for the source electrode, arranged to be in contact with the lithium-electro-intercalated TiS 2 compound.
Claim 8
Dependent Claim
81 words
A voltage variable capacitor, comprising: a pair of charge storage plates; a lithium-electro-intercalated TiS 2 compound disposed between and in intimate contact with the pair of charge storage plates; a nonaqueous electrolyte comprising LiClO 4 dissolved in propylene carbonate arranged to be in contact with the lithium-electro-intercalated TiS 2 compound; a source electrode arranged to be in contact with the nonaqueous electrolyte; and a control electrode for the source electrode, arranged to be in contact with the lithium-electro-intercalated TiS 2 compound.
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) | 2001-06-22 | 2001-12-22 | 2002-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-22 | 2005-12-22 | 2006-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-22 | 2009-12-22 | 2010-06-23 | $7700.00 | Window Closed / Lapsed |