Patent US2985532A successfully refreshed from Google Patents.
US2985532A
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Electrical contacts
Assignee: Engelhard Industries Inc
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Filing: 1957-12-05
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Granted: 1961-05-23
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Expires: 1977-12-05
Abstract
No abstract record available.
Inventors
- 👤 Streicher Johann Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:42
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/023; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/929
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A METHOD OF MANUFACTURING ELECTRICAL CONTACTS FROM POWERED SILVER COMPRISING ADDING TO AT LEAST A PORTION OF THE SILVER POWDER AN AGENT SELECTED FROM THE GROUP CONSISTING OF A HALOGEN AND A SOLUTION CONTAINING AMMONIUM HALIDE, SAID AGENT BEING ADDED IN AN AMOUNT SUFFICIENT TO REACT WITH THE SILVER AND FORM IN SITU ON THE SILVER FROM 0.8 PERCENT TO 6.0 PERCENT BY WEIGHT OF SILVER HALIDE, THEREAFTER COMPACTING THE POWDER INTO DESIRED FROM AND SINTERING THE FORM TO PRODUCE THE ELECTRICAL CONTACT.
Claim 2
Independent Claim
83 words
A METHOD OF MANUFACTURING ELECTRICAL CONTACTS FROM POWERED SILVER COMPRISING ADDING TO AT LEAST A PORTION OF THE SILVER POWDER AN AGENT SELECTED FROM THE GROUP CONSISTING OF A HALOGEN AND A SOLUTION CONTAINING AMMONIUM HALIDE, SAID AGENT BEING ADDED IN AN AMOUNT SUFFICIENT TO REACT WITH THE SILVER AND FORM IN SITU ON THE SILVER FROM 0.8 PERCENT TO 6.0 PERCENT BY WEIGHT OF SILVER HALIDE, THEREAFTER COMPACTING THE POWDER INTO DESIRED FROM AND SINTERING THE FORM TO PRODUCE THE ELECTRICAL CONTACT.
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) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |