Patent US4567111A successfully refreshed from Google Patents.
US4567111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductive pigment-coated surfaces
Assignee: Honeywell UOP LLC
•
Filing: 1984-05-14
•
Granted: 1986-01-28
•
Expires: 2004-05-14
Abstract
Abstract Conductive pigment-coated surfaces which are resistant to the effect of moisture may be prepared by admixing an alloy consisting of a conductive nonnoble metal such as copper and preferentially oxidizable material such as boron with a lead-containing compound such as lead oxide. The resulting composite may be further mixed with an organic vehicle to form a conductive ink which, after being painted on a substrate such as alumina and subsequently fired, will provide a conductive pigment-coated surface which is moisture-resistant and which will possess excellent conductive characteristics.
Inventors
- 👤 Daniel S. Janikowski
- 👤 Ming S. Shum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:20
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/52; H; H01; H01B; H01B1/00; H01B1/14; H01B1/16; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; H05K1/097; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
28 words
A conductive, water-resistant, pigment-coated surface wherein the coating comprises an alloy of a non-noble conductive metal and at least one oxidizable material in admixture with a lead alloy.
Claim 2
Dependent Claim
28 words
A conductive, water-resistant, pigment-coated surface wherein the coating comprises an alloy of a non-noble conductive metal and at least one oxidizable material in admixture with a lead alloy.
Claim 3
Dependent Claim
39 words
The conductive water-resistant, pigment-coated surface as set forth in claim 1 in which said oxidizable material is present in said alloy in an amount in the range of from about 5% to about 20% by weight of said alloy.
Claim 4
Dependent Claim
19 words
The conductive water-resistant, pigment-coated surface as set forth in claim 1 in which said nonnoble conductive metal is nickel.
Claim 5
Dependent Claim
19 words
The conductive water-resistant, pigment-coated surface as set forth in claim 1 in which said nonnoble conductive metal is copper.
Claim 6
Dependent Claim
50 words
The conductive water-resistant, pigment-coated surface as set forth in claim 1 in which said lead alloy is present in said admixture in an amount in the range of from about 0.5 to about 10 times the amount of oxidizable material present in the alloy of nonnoble metal and oxidizable material.
Claim 7
Dependent Claim
20 words
The conductive water-resistant, pigment-coated surface as set forth in claim 1 in which said lead alloy is a lead-copper alloy.
Claim 8
Dependent Claim
28 words
The conductive water-resistant, pigment-coated surface as set forth in claim 1 in which said oxidizable material is selected from the group consisting of carbon, boron, boron-carbon and boron-silicon.
Claim 9
Dependent Claim
18 words
The conductive water-resistant, pigment-coated surface as set forth in claim 7 in which said oxidizable material is boron.
Claim 10
Dependent Claim
18 words
The conductive water-resistant, pigment-coated surface as set forth in claim 7 in which said oxidizable material is carbon.
Claim 11
Dependent Claim
96 words
A process for the preparation of a conductive water-resistant, pigment-coated surface which comprises alloying a non-noble conductive metal with at least one oxidizable material, admixing the thus-formed alloy with a lead alloy, mixing the resultant admixture with an organic vehicle to form an ink, screening said ink onto a substrate, thereafter firing said ink in an oxidizing atmosphere at a temperature in excess of about 1000° F. for a period of time sufficient to oxidize said oxidizable material with oxidation of said non-noble metal, cooling the thus-fired product, and recovering the resultant conductive water-resistant, pigment-coated surface.
Claim 12
Dependent Claim
96 words
A process for the preparation of a conductive water-resistant, pigment-coated surface which comprises alloying a non-noble conductive metal with at least one oxidizable material, admixing the thus-formed alloy with a lead alloy, mixing the resultant admixture with an organic vehicle to form an ink, screening said ink onto a substrate, thereafter firing said ink in an oxidizing atmosphere at a temperature in excess of about 1000° F. for a period of time sufficient to oxidize said oxidizable material with oxidation of said non-noble metal, cooling the thus-fired product, and recovering the resultant conductive water-resistant, pigment-coated surface.
Claim 13
Dependent Claim
25 words
The process as set forth in claim 10 in which said oxidizable material is selected from the group consisting of carbon, boron, boron-carbon, and boron-silicon.
Claim 14
Dependent Claim
36 words
The process as set forth in claim 10 in which said oxidizable material is present in said alloy in an amount in the range of from about 5% to about 20% by weight of said alloy.
Claim 15
Dependent Claim
15 words
The process as set forth in claim 10 in which said oxidizable material is boron.
Claim 16
Dependent Claim
15 words
The process as set forth in claim 10 in which said oxidizable material is copper.
Claim 17
Dependent Claim
16 words
The process as set forth in claim 10 in which said nonnoble conductive metal is nickel.
Claim 18
Dependent Claim
15 words
The process as set forth in claim 10 in which said nonnoble metal is copper.
Claim 19
Dependent Claim
46 words
The process as set forth in claim 10 in which said lead-alloy is present in said admixture in an amount in the range of from about 0.5 to about 10 times the amount of oxidizable material present in the alloy of nonnoble metal and oxidizable material.
Claim 20
Dependent Claim
17 words
The process as set forth in claim 10 in which said lead alloy is a lead-copper alloy.
References Cited (Backward Citations)
US3663276A
Cited
US4079156A
Cited
US4122232A
Cited
US4273822A
Cited
US4323483A
Cited
US4322316A
Cited
US4388347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-27 | 1989-07-29 | 1990-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-27 | 1993-07-29 | 1994-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-27 | 1997-07-29 | 1998-01-28 | $7700.00 | Window Closed / Lapsed |