US2585752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of discontinuous, conducting coatings upon insulating surfaces
Assignee: Sprague Electric Co
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Filing: 1948-05-26
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Granted: 1952-02-12
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Expires: 1968-05-26
Abstract
No abstract record available.
Inventors
- 👤 Stanley O Dorst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:46
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/3465; H05K3/3468; H01; H01B; H01B1/00; H01G; H01G4/00; H01G4/28; H05K3/10; H05K3/108; H05K1/00; H05K1/02; H05K1/03; H05K1/0306; H05K2201/00; H05K2201/03; H05K2201/0302; H05K2201/0305; H05K2201/0332; H05K2201/0335; H05K2201/0344; H05K3/02; H05K3/06; H05K3/067; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A PROCESS FOR PRODUCING DISCONTINUOUS, CONDUCTING COATINGS UPON THE SURFACES OF INSULATING BODIES, WHICH COMPRISES PROVIDING THE ENTIRE SURFACE OF THE INSULATING BODY WITH A THIN LAYER OF A METAL OF THE CLASS CONSISTING OF SILVER, PLATINUM AND PALLADIUM MASKING PORTIONS OF SAID LAYER WITH AN INSULATING COATING, ELECTROPLATING THE EXPOSED PORTIONS OF SAID LAYER WITH A CONDUCTING METAL OF THE CLASS CONSISTING OF COPPER, NICKEL, CADMIUM, LEAD AND TIN, REMOVING THE INSULATING COATING, AND DIPPING THE ENTIRE SURFACE IN A BATH OF MOLTEN SOLDER COMPOSED OF AN ALLOY OF AT LEAST TWO METALS SELECTED FROM THE GROUP CONSISTING OF LEAD, TIN, BISMUTH, ZINC, COPPER, SILVER AND CADMIUM, UNTIL THE NEWLY EXPOSED PORTIONS OF THE THIN LAYER HAVE BEEN DISSOLVED BY THE SOLDER.
Claim 2
Dependent Claim
123 words
A PROCESS FOR PRODUCING DISCONTINUOUS, CONDUCTING COATINGS UPON THE SURFACES OF INSULATING BODIES, WHICH COMPRISES PROVIDING THE ENTIRE SURFACE OF THE INSULATING BODY WITH A THIN LAYER OF A METAL OF THE CLASS CONSISTING OF SILVER, PLATINUM AND PALLADIUM MASKING PORTIONS OF SAID LAYER WITH AN INSULATING COATING, ELECTROPLATING THE EXPOSED PORTIONS OF SAID LAYER WITH A CONDUCTING METAL OF THE CLASS CONSISTING OF COPPER, NICKEL, CADMIUM, LEAD AND TIN, REMOVING THE INSULATING COATING, AND DIPPING THE ENTIRE SURFACE IN A BATH OF MOLTEN SOLDER COMPOSED OF AN ALLOY OF AT LEAST TWO METALS SELECTED FROM THE GROUP CONSISTING OF LEAD, TIN, BISMUTH, ZINC, COPPER, SILVER AND CADMIUM, UNTIL THE NEWLY EXPOSED PORTIONS OF THE THIN LAYER HAVE BEEN DISSOLVED BY THE SOLDER.
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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) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |