US4101710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver compositions
Assignee: EIDP Inc
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Filing: 1977-03-07
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Granted: 1978-07-18
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Expires: 1997-03-07
Abstract
Abstract Conductive silver compositions useful for producing in a single application step solderable metal coatings on titanate bodies especially semiconducting ceramic titanate bodies, the silver compositions comprising specific amounts of finely divided silver; boron, Ni 3 B, and/or certain nickel boride/phosphides; and a binder which is glass and/or PbF 2 . These inorganic solids are dispersed in an inert liquid vehicle. Also these compositions fired on a dielectric substrate.
Inventors
- 👤 Sanford Morton Marcus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:55
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/14; H01B1/16; H01C; H01C17/00; H01C17/28; H01C17/281; H01C17/283; H01C17/286
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
98 words
A conductive silver composition useful for producing in a single application step solderable metal coatings on ceramic titanate bodies, said silver compositions being a mixture of finely divided inorganic particles dispersed in a vehicle, the inorganic particles consisting essentially of about, by weight, (A) (1) 75-98% silver (2) 2-6% boron, and (3) 1-22% glass, PbF 2 , or mixtures thereof, or (B) (1) 40-70% silver, (2) 25-60% Ni 3 B 1-x P x wherein x is in the approximate range 0-0.6, and (3) 3-22% glass, PbF 2 , or mixtures thereof, or (C) mixtures of (A) and (B).
Claim 2
Dependent Claim
98 words
A conductive silver composition useful for producing in a single application step solderable metal coatings on ceramic titanate bodies, said silver compositions being a mixture of finely divided inorganic particles dispersed in a vehicle, the inorganic particles consisting essentially of about, by weight, (A) (1) 75-98% silver (2) 2-6% boron, and (3) 1-22% glass, PbF 2 , or mixtures thereof, or (B) (1) 40-70% silver, (2) 25-60% Ni 3 B 1-x P x wherein x is in the approximate range 0-0.6, and (3) 3-22% glass, PbF 2 , or mixtures thereof, or (C) mixtures of (A) and (B).
Claim 3
Dependent Claim
13 words
Compositions according to claim 1 wherein the inorganic particles consist essentially of (A).
Claim 4
Dependent Claim
10 words
Compositions according to claim 2 wherein (A) (3) is glass.
Claim 5
Dependent Claim
12 words
Compositions according to claim 2 wherein (A) (3) is PbF 2 .
Claim 6
Dependent Claim
26 words
Compositions according to claim 2 wherein (A) consists essentially of about (1) 75-80% silver, (2) 3-4% boron, and (3) 10-21% glass, PbF 2 or mixtures thereof.
Claim 7
Dependent Claim
22 words
Compositions according to claim 5 of about (1) 76% silver, (2) 3% boron, and (3) 21% glass, PbF 2 or mixtures thereof.
Claim 8
Dependent Claim
13 words
Compositions according to claim 1 wherein the inorganic particles consist essentially of (B).
Claim 9
Dependent Claim
10 words
Compositions according to claim 7 wherein (B) (3) is glass.
Claim 10
Dependent Claim
12 words
Compositions according to claim 7 wherein (B) (3) is PbF 2 .
Claim 11
Dependent Claim
32 words
Compositions according to claim 7 wherein (B) consists essentially of about (1) 50-60% silver, (2) 25-40% said Ni 3 B 1-x P x , (3) 10∝21% glass, PbF 2 or mixtures thereof.
Claim 12
Dependent Claim
32 words
Compositions according to claim 10 consisting essentially of about (1) 56% silver, (2) 30% said Ni 3 B 1-x P x , and (3) 14% glass, PbF 2 , or mixtures thereof.
Claim 13
Dependent Claim
12 words
Compositions according to claim 1 of 60-80% inorganic particles and 20-40% vehicle.
Claim 14
Dependent Claim
15 words
Ceramic titanate bodies having adherent thereto a sintered electrode of the composition of claim 1.
Claim 15
Dependent Claim
15 words
Ceramic titanate bodies having adherent thereto a sintered electrode of the composition of claim 2.
Claim 16
Dependent Claim
15 words
Ceramic titanate bodies having adherent thereto a sintered electrode of the composition of claim 7.
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) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |