Patent US2879183A successfully refreshed from Google Patents.
US2879183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulating coatings and a method for their production
Assignee: AT&T Inc
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Filing: 1955-12-15
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Granted: 1959-03-24
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Expires: 1975-12-15
Abstract
No abstract record available.
Inventors
- 👤 William H Doherty
- 👤 Raymond C Platow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:24
CPC Classifications
H; H01; H01P; H01P3/00; H01P3/18; H01B; H01B13/00; H01B13/06; H01B3/00; H01B3/002; H01B3/004; H01B3/008; H01B3/02; H01B3/10; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
THE METHOD OF MAKING A LAMINATED ELECTRICAL CONDUCTOR WHICH COMPRISES COATING A METALLIC CONDUCTOR WITH A POLYMERIC ORGANIC ELECTRICALLY-INSULATING MATERIAL SUITABLE FOR WIRE INSULATION, COVERING SAID COATING WITH AT LEAST ONE FILM OF AN ACIDIFIED AQUEOUS SOLUTION COMPRISING COLLOIDAL HYDRATED SILICA AND A WATER-SOLUBLE COUPLING AGENT CONSISTING OF A LOW-MOLECULAR-WEIGHT ALCOHOL, SAID SOLUTION BEING NON-REACTIVE WITH METALLIC PORTIONS OF THE LAMINATED CONDUCTOR, DRYING SAID FILM BETWEEN SUCCESSIVE APPLICATIONS, WHEREBY SAID FILM IS CONVERTED TO A COATING OF AN ADHERENT FORM OF SILICA WHICH OVERLAYS VOIDS IN THE ORGANIC ELECTRICALLY-INSULATING COATING THEREUNDER, THEN COVERING THE SILICA COATING SO PRODUCED WITH AN ELECTRICALLY-CONDUCTIVE METAL FILM, AND REPEATING THE STEPS OF COATING WITH A POLYMERIC ORGANIC INSULATING MATERIAL, COATING WITH AT LEAST ONE FILM OF THE ACIDIFIED AQUEOUS SOLUTION AS DESCRIBED HEREIN, AND COATING WITH AN ELECTRICALLY-CONDUCTIVE METAL FILM TO PRODUCE A LAMINATED ELECTRICAL CONDUCTOR THE CONDUCTING PORTIONS OF WHICH ARE SEPARATED BY A LAYER OF POLYMERIC ORGANIC ELECTRICALLY-INSULATING MATERIAL COVERED WITH A COATING OF SILICA.
Claim 2
Independent Claim
163 words
THE METHOD OF MAKING A LAMINATED ELECTRICAL CONDUCTOR WHICH COMPRISES COATING A METALLIC CONDUCTOR WITH A POLYMERIC ORGANIC ELECTRICALLY-INSULATING MATERIAL SUITABLE FOR WIRE INSULATION, COVERING SAID COATING WITH AT LEAST ONE FILM OF AN ACIDIFIED AQUEOUS SOLUTION COMPRISING COLLOIDAL HYDRATED SILICA AND A WATER-SOLUBLE COUPLING AGENT CONSISTING OF A LOW-MOLECULAR-WEIGHT ALCOHOL, SAID SOLUTION BEING NON-REACTIVE WITH METALLIC PORTIONS OF THE LAMINATED CONDUCTOR, DRYING SAID FILM BETWEEN SUCCESSIVE APPLICATIONS, WHEREBY SAID FILM IS CONVERTED TO A COATING OF AN ADHERENT FORM OF SILICA WHICH OVERLAYS VOIDS IN THE ORGANIC ELECTRICALLY-INSULATING COATING THEREUNDER, THEN COVERING THE SILICA COATING SO PRODUCED WITH AN ELECTRICALLY-CONDUCTIVE METAL FILM, AND REPEATING THE STEPS OF COATING WITH A POLYMERIC ORGANIC INSULATING MATERIAL, COATING WITH AT LEAST ONE FILM OF THE ACIDIFIED AQUEOUS SOLUTION AS DESCRIBED HEREIN, AND COATING WITH AN ELECTRICALLY-CONDUCTIVE METAL FILM TO PRODUCE A LAMINATED ELECTRICAL CONDUCTOR THE CONDUCTING PORTIONS OF WHICH ARE SEPARATED BY A LAYER OF POLYMERIC ORGANIC ELECTRICALLY-INSULATING MATERIAL COVERED WITH A COATING OF SILICA.
References Cited (Backward Citations)
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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) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |