US3202488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver-plated copper powder
Assignee: Chomerics Inc
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Filing: 1964-03-04
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Granted: 1965-08-24
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Expires: 1984-03-04
Abstract
No abstract record available.
Inventors
- 👤 John E Ehrreich
- 👤 Donald H Avery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:59
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/42; B; B22; B22F; B22F1/00; B22F1/17; H; H01; H01B; H01B1/00; H01B1/02; H01B1/026; H01B1/20; H01B1/22; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9335; Y10S428/936; Y10T; Y10T428/00; Y10T428/12; Y10T428/12181; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12896; Y10T428/12903; Y10T428/12993
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
107 words
A METAL POWDER FOR RENDERING PLASTIC COMPOSITIONS ELECTRICALLY CONDUCTIVE COMPRISING A COPPER-BEARING POWDER HAVING A CONTINUOUS THIN ELECTRICALLY ADHERENT STABLE COATING OF SILVER THEREON, SAID POWDER HAVING A MATTE APPEARANCE IN LOOSE FORM, SAID COATING HAVING BEEN DEPOSITED BY REPLACEMENT PLATING WITH THE PLATING BEING TERMINATED BY DEPLETION OF SILVER IONS IN THE PLATING SOLUTION AND THE THICKNESS OF SAID COATING BEING LESS THAN THAT WHICH WOULD BE OBTAINABLE IF AN EXCESS OF SAID SILVER IONS WERE AVAILABLE IN SAID PLATING SOLUTIONS, AND THE CONDUCTIVITY OF SAID METAL POWDER CHANGING LESS THAN 50% WHEN SAID POWDER IS EXPOSED TO AN OXIDIZING ATMOSPHERE AT 400*F. FOR 24 HOURS.
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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |