US2830898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical contact elements
Assignee: Metals and Controls Corp
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Filing: 1956-10-04
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Granted: 1958-04-15
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Expires: 1976-10-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Childress B Gwyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:32
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/023; H01H1/0237; H01H1/02372; H01H1/02374
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
AN ELECTRICAL CONTACT ELEMENT FORMED OF 1% TO 25% OF CADMIUM OXIDE PARTICLES DISPERSED IN AN ALLOY CONSISTING ESSENTIALLY OF 0.25% TO 15% OF A MODIFYING AGENT AND THE REMAINDER SELECTED FROM THE GROUP CONSISTING OF SILVER AND COPPER, SAID MODIFYING AGENT BEING SELECTED FROM THE GROUP CONSISTING OF HAFNIUM, VANADIUM AND ZIRCONIUM AND MIXTURES THEREOF, AND SAID PERCENTAGES BEING BY WEIGHT OF THE WOLE.
Claim 2
Dependent Claim
65 words
AN ELECTRICAL CONTACT ELEMENT FORMED OF 1% TO 25% OF CADMIUM OXIDE PARTICLES DISPERSED IN AN ALLOY CONSISTING ESSENTIALLY OF 0.25% TO 15% OF A MODIFYING AGENT AND THE REMAINDER SELECTED FROM THE GROUP CONSISTING OF SILVER AND COPPER, SAID MODIFYING AGENT BEING SELECTED FROM THE GROUP CONSISTING OF HAFNIUM, VANADIUM AND ZIRCONIUM AND MIXTURES THEREOF, AND SAID PERCENTAGES BEING BY WEIGHT OF THE WOLE.
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) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |