US4369063A
Expired / Lapsed
US
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Silver containing conductive coatings
Assignee: BASF Corp
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Filing: 1981-11-12
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Granted: 1983-01-18
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Expires: 2001-11-12
Abstract
Abstract Conductive coating compositions comprising particulate silver metal, a glass frit system, a selenium component, a vehicle for said composition and various optional ingredients, said conductive compositions being applicable for use as heating elements, printed circuits, and the like.
Inventors
- 👤 Earsel McGowan, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:26
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; C; C09; C09D; C09D5/00; C09D5/24; H01; H01B; H01B1/00; H01B1/14; H01B1/16; H05B; H05B3/00; H05B3/10; H05B3/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
50 words
In a conductive coating composition comprising from about 45-90%, by weight, of silver in particulate form, from about 1.5-25%, by weight, of a glass frit composition, and from about 5-50%, by weight, of a vehicle for said composition the improvement comprising from about 0.5-15%, by weight, of a selenium component.
Claim 2
Dependent Claim
50 words
In a conductive coating composition comprising from about 45-90%, by weight, of silver in particulate form, from about 1.5-25%, by weight, of a glass frit composition, and from about 5-50%, by weight, of a vehicle for said composition the improvement comprising from about 0.5-15%, by weight, of a selenium component.
Claim 3
Dependent Claim
15 words
The composition of claim 1, wherein said glass frit comprises a combination of metal oxides.
Claim 4
Dependent Claim
34 words
The composition of claim 2, wherein said oxides are selected from the group consisting of zinc, lead, silicon, titanium, zirconium, sodium, boron, lithium, potassium, calcium, aluminum, tin, vanadium, molybdenum, magnesium, iron and manganese oxides.
Claim 5
Dependent Claim
16 words
The composition of claim 3, wherein said frit comprises lead oxide, silicon dioxide and boron oxide.
Claim 6
Dependent Claim
25 words
The composition of claim 1, wherein said selenium component is selected from metallic selenium, metallic selenide and selenate salts, sulfur-selenium complexes and metal selenide complexes.
Claim 7
Dependent Claim
15 words
The composition of claim 5, wherein said selenium component is a cadmium sulfur selenide pigment.
Claim 8
Dependent Claim
11 words
The composition of claim 1, wherein an organic vehicle is present.
Claim 9
Dependent Claim
23 words
The composition of claim 7, wherein said vehicle is based on pine oil, vegetable oils, mineral oils or low molecular weight petroleum fractions.
Claim 10
Dependent Claim
13 words
The composition of claim 8, wherein said vehicle is based on pine oil.
Claim 11
Dependent Claim
32 words
The composition of claim 1 which contains 50-82% of silver, 2-20% of glass frit, 1-3% of selenium component and 7-22% of vehicle, all percentages being based on the weight of the composition.
Claim 12
Dependent Claim
19 words
The composition of claim 1 which comprises silver, lead borosilicate frit, cadmium sulfur selenide pigment and pine oil-based vehicle.
Claim 13
Dependent Claim
42 words
The composition of claim 11 which contains 80.67% silver powder, 2.56% lead borosilicate frit, 3.0% cadmium sulfur selenide pigment, 10.08% pine oil-based vehicle, 1.02% wetting agent, 1.32% anti-gelling agent and 1.35% iso-stearic acid, all percentages being based on weight of the composition.
References Cited (Backward Citations)
US3849142A
Cited
US3917487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-17 | 1986-07-19 | 1987-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-17 | 1990-07-19 | 1991-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-17 | 1994-07-19 | 1995-01-18 | $7700.00 | Window Closed / Lapsed |