US2874449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of providing an electrically conductive network on a support of insulating material
Assignee: US Philips Corp
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Filing: 1955-12-27
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Granted: 1959-02-24
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Expires: 1975-12-27
Abstract
No abstract record available.
Inventors
- 👤 Rooy Antonius Johannes De
- 👤 Jonkers Johannes Jose Antonius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:43
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/02; H05K3/04; H05K3/046; H05K3/048; H01; H01J; H01J29/00; H01J29/02; H01J29/08; H01J9/00; H01J9/02; H01J9/14; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/49155; Y10T29/49162
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A METHOD OF FORMING A COPPER METAL GRID COMPRISING THE STEPS, PLACING A FINELY-MESHED METAL GRID ON THE SURFACE OF AN INSULATING SUPPORT, COATING SAID SURFACE AND METAL GRID WITH A THIN LAYER OF A FINELY-DIVIDED SOLUBLE CRYSTALLINE MATERIAL, REMOVING THE GRID THEREBY REMOVING THE CRYSTALLINE MATERIAL THAT HAD BEEN ON THE GRID SURFACE AND EXPOSING PORTIONS OF ATHE INSULATING SUPPORT SURFACE CORRESPONDING TO THE GRID, COATING THE LAYER OF CRYSTALLINE MATERIAL AND EXPOSED SURFACE OF THE INSULATING SUPPORT WITH A THIN LAYER OF METAL, IMMERSING THE INSULATING SUPPORT IN A SOLVENT FOR SAID CRYSTALLINE MATERIAL UNTIL THE SOLVENT HAS PENETRATED THROUGH THE METAL LAYER AND HAS DISSOLVED THE CRYSTALLINE MATERIAL, REMOVING THE DISSOLVED CRYSTALLINE MATERIAL AND METAL NOT ADHERING DIRECTLY TO THE SURFACE OF THE INSULATING SUPPORT THEREBY FORMING A METAL PRINT OF SAID NETWORK ON THE INSULATING SUPPORT, ELECTRODEPOSITING ON SIAD NETWORK ON THE COPPER GRID AND REMOVING THE THUS FORMED COPPER GRID FROM THE INSULATING SUPPORT.
Claim 2
Independent Claim
159 words
A METHOD OF FORMING A COPPER METAL GRID COMPRISING THE STEPS, PLACING A FINELY-MESHED METAL GRID ON THE SURFACE OF AN INSULATING SUPPORT, COATING SAID SURFACE AND METAL GRID WITH A THIN LAYER OF A FINELY-DIVIDED SOLUBLE CRYSTALLINE MATERIAL, REMOVING THE GRID THEREBY REMOVING THE CRYSTALLINE MATERIAL THAT HAD BEEN ON THE GRID SURFACE AND EXPOSING PORTIONS OF ATHE INSULATING SUPPORT SURFACE CORRESPONDING TO THE GRID, COATING THE LAYER OF CRYSTALLINE MATERIAL AND EXPOSED SURFACE OF THE INSULATING SUPPORT WITH A THIN LAYER OF METAL, IMMERSING THE INSULATING SUPPORT IN A SOLVENT FOR SAID CRYSTALLINE MATERIAL UNTIL THE SOLVENT HAS PENETRATED THROUGH THE METAL LAYER AND HAS DISSOLVED THE CRYSTALLINE MATERIAL, REMOVING THE DISSOLVED CRYSTALLINE MATERIAL AND METAL NOT ADHERING DIRECTLY TO THE SURFACE OF THE INSULATING SUPPORT THEREBY FORMING A METAL PRINT OF SAID NETWORK ON THE INSULATING SUPPORT, ELECTRODEPOSITING ON SIAD NETWORK ON THE COPPER GRID AND REMOVING THE THUS FORMED COPPER GRID FROM THE INSULATING SUPPORT.
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) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |