US3849124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitor powder
Assignee: Saint Gobain Abrasives Inc
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Filing: 1971-07-26
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Granted: 1974-11-19
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Expires: 1991-07-26
Abstract
Abstract Powder for making electric capacitor or the like comprising a ternary niobium-zirconium-titanium alloy. The alloy is selected as to composition and treated to produce and retain the beta (body-centered-cubic) phase. The resultant product affords high capacitor stability and low leakage approaching the characteristics of the more expensive tantalum at a capacitance cost comparable to or better than that of niobium.
Inventors
- 👤 G Villani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:47
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/04; H01G9/042; C; C22; C22C; C22C16/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
61 words
A POWDERED MATERIAL OF NIOBIUM-ZIRCONIUM-TITANIUM TERNARY ALLOY, IN FORM SUITABLE FOR MANUFACTURE INTO AN ELECTROLYTIC CAPACITORR ANODE, THE ALLOY HAVING AN ESSENTIALLY HOMOGENEOUS CRYSTAL STRUCTURE OF A SINGLE BODY CENTERED CUBIC ALLOY PHASE WHEREIN THE ELEMENTS OF THE ALLOY ARE PARESENT IN ATOMIC PERCENTAGES OF FROM: 20 TO 40% FOR NIOBIUM 30 TO 60% FOR ZIRCONIUM 20 TO 40% FOR TITANIUM.
Claim 2
Dependent Claim
61 words
A POWDERED MATERIAL OF NIOBIUM-ZIRCONIUM-TITANIUM TERNARY ALLOY, IN FORM SUITABLE FOR MANUFACTURE INTO AN ELECTROLYTIC CAPACITORR ANODE, THE ALLOY HAVING AN ESSENTIALLY HOMOGENEOUS CRYSTAL STRUCTURE OF A SINGLE BODY CENTERED CUBIC ALLOY PHASE WHEREIN THE ELEMENTS OF THE ALLOY ARE PARESENT IN ATOMIC PERCENTAGES OF FROM: 20 TO 40% FOR NIOBIUM 30 TO 60% FOR ZIRCONIUM 20 TO 40% FOR TITANIUM.
Claim 3
Dependent Claim
20 words
The material of claim 1 wherein the niobium and titanium are present in the alloy in substantially equal atomic amounts.
Claim 4
Dependent Claim
16 words
The material of claim 2 having a Fisher Average Particle Diameter of less than 6 microns.
Claim 5
Dependent Claim
28 words
The material of claim 3 wherein the elements of the alloy are found throughout the material in essentially the atomic proportions of: 50% zirconium 25% niobium 25% titanium.
Claim 6
Dependent Claim
28 words
The material of claim 2 wHerein the elements of the alloy are found throughout the material in essentially the atomic proportions of: 50% zirconium 25% niobium 25% titanium.
Claim 7
Dependent Claim
77 words
A capacitor grade powder for use in manufacturing solid electrolytic capacitor sintered, porous anodes anodizable to 200 volts and affording high thermal stability and low leakage and dissipation factor, consistent with high capacitance, comprising single phase body-centered-cubic crystal structure niobium-zirconium-titanium ternary alloy throughout the powder mass, the elements of the alloy being present in essentially homogeneous atomic percentages and within the respective ranges of: 20-80% for niobium, 20-80% for zirconium, 20-80% for titanium, throughout the powder mass.
Claim 8
Dependent Claim
77 words
A capacitor grade powder for use in manufacturing solid electrolytic capacitor sintered, porous anodes anodizable to 200 volts and affording high thermal stability and low leakage and dissipation factor, consistent with high capacitance, comprising single phase body-centered-cubic crystal structure niobium-zirconium-titanium ternary alloy throughout the powder mass, the elements of the alloy being present in essentially homogeneous atomic percentages and within the respective ranges of: 20-80% for niobium, 20-80% for zirconium, 20-80% for titanium, throughout the powder mass.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |