US3851228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitor with copper oxide containing electrode
Assignee: EIDP Inc
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Filing: 1973-04-23
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Granted: 1974-11-26
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Expires: 1993-04-23
Abstract
Abstract Improved glass-free metallizations for formation of conductors on substrates, comprising specified proportionate amounts of (a) copper oxide or a precursor of copper oxide, and (b) palladium or palladium oxide. Also substrates having such metallizations fired thereon, and capacitors thereof.
Inventors
- 👤 J Sheard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:00
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/005; H01G4/008; H01G4/0085
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
100 words
IN METALLIZATIONS OF FINELY DIVIDED NOBLE METAL(S) USEFUL FOR CONDUCTOR FORMATION, IMPROVED ESSENTIALLY GLASS-FREE METALLIZATIONS OF PARTICLES OF (A) ONE OR MORE MEMBERS SELECTED FROM THE GROUP OF PALLADIUM, PALLADIUM OXIDE, AND MIXTURES THEREOF AND (B) ONE OR MORE MEMBERS FROM THE GROUP CONSISTING OF COPPER OXIDES AND PRECURSORS THEREOF; THE RATIO OF COPPER IN (A) CALCULATED AS THE ELEMENT TO PALLADIUM IN (B) CALCULATED AS THE ELEMENT, BEING UP TO 2.5/1, BY WEIGHT; THE PARTICLES OF SAID METALLIZATION BEING OF A SIZE SUCH THAT AT LEAST 90 PERCENT BY WEIGHT OF SAID PARTICLES ARE NOT GREATER THAN 5 MICRONS.
Claim 2
Dependent Claim
100 words
IN METALLIZATIONS OF FINELY DIVIDED NOBLE METAL(S) USEFUL FOR CONDUCTOR FORMATION, IMPROVED ESSENTIALLY GLASS-FREE METALLIZATIONS OF PARTICLES OF (A) ONE OR MORE MEMBERS SELECTED FROM THE GROUP OF PALLADIUM, PALLADIUM OXIDE, AND MIXTURES THEREOF AND (B) ONE OR MORE MEMBERS FROM THE GROUP CONSISTING OF COPPER OXIDES AND PRECURSORS THEREOF; THE RATIO OF COPPER IN (A) CALCULATED AS THE ELEMENT TO PALLADIUM IN (B) CALCULATED AS THE ELEMENT, BEING UP TO 2.5/1, BY WEIGHT; THE PARTICLES OF SAID METALLIZATION BEING OF A SIZE SUCH THAT AT LEAST 90 PERCENT BY WEIGHT OF SAID PARTICLES ARE NOT GREATER THAN 5 MICRONS.
Claim 3
Dependent Claim
10 words
Metallizations of claim 1 dispersed in an inert liquid vehicle.
Claim 4
Dependent Claim
9 words
Metallizations according to claim 1 of palladium and Cu2O.
Claim 5
Dependent Claim
9 words
Metallizations according to claim 1 of palladium and CuO.
Claim 6
Dependent Claim
10 words
Metallizations according to claim 1 of palladium oxide and Cu2O.
Claim 7
Dependent Claim
10 words
Metallizations according to claim 1 of palladium oxide and CuO.
Claim 8
Dependent Claim
14 words
Metallizations of claim 1 additionally comprising up to 10 percent finely divided barium titanate.
Claim 9
Dependent Claim
13 words
A dielectric substrate having thereon a conductor of the composition of claim 1.
Claim 10
Dependent Claim
13 words
A dielectric substrate having thereon a conductor of the composition of claim 3.
Claim 11
Dependent Claim
13 words
A dielectric substrate having thereon a conductor of the composition of claim 4.
Claim 12
Dependent Claim
13 words
A dielectric substrate having thereon a conductor of the composition of claim 5.
Claim 13
Dependent Claim
10 words
Metallizations according to claim 1 of palladium oxide and CuO.
Claim 14
Dependent Claim
15 words
A multilayer capacitor having two or more electrodes of the sintered composition of claim 1.
Claim 15
Dependent Claim
15 words
A multilayer capacitor having two or more electrodes of the sintered composition of claim 3.
Claim 16
Dependent Claim
15 words
A multilayer capacitor having two or more electrodes of the sintered composition of claim 4.
Claim 17
Dependent Claim
15 words
A multilayer capacitor having two or more electrodes of the sintered compsoition of claim 5.
Claim 18
Dependent Claim
15 words
A multilayer capacitor having two or more electrodes of the sintered composition of claim 6.
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |