US4532075A
Expired / Lapsed
US
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Thick film conductor composition
Assignee: EIDP Inc
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Filing: 1984-08-10
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Granted: 1985-07-30
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Expires: 2004-08-10
Abstract
Abstract A thick film conductor composition comprising an admixture of finely divided particles of noble metal and inorganic binder dispersed in organic medium in which the inorganic binder consists essentially of a bismuth silicate glass and/or bismuth germanate glass, ZnO and optionally Bi 2 O 3 .
Inventors
- 👤 Barry E. Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:40
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; C; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C3/12; C03C3/253; H01; H01B; H01B1/00; H01B1/14; H01B1/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
100 words
A printable thick film conductor composition comprising an admixture of A. 60-99% wt. finely divided particles of noble metal, noble metal alloy or mixtures thereof and B. 40-1% wt. inorganic binder consisting essentially of finely divided particles of (1) a boron-free glass corresponding to the formula Bi.sub.4 Si.sub.3-x Ge.sub.x O.sub.12, wherein x=0-3, having dissolved therein, basis glass, 0-100 pph PbO, (2) 0-100 pph Bi 2 O 3 , and (3) 4-100 pph ZnO, provided that when x=0, the glass has dissolved therein at least 1 pph PbO, dispersed in C. an organic medium which is clean burning at 400°-450° C.
Claim 2
Dependent Claim
100 words
A printable thick film conductor composition comprising an admixture of A. 60-99% wt. finely divided particles of noble metal, noble metal alloy or mixtures thereof and B. 40-1% wt. inorganic binder consisting essentially of finely divided particles of (1) a boron-free glass corresponding to the formula Bi.sub.4 Si.sub.3-x Ge.sub.x O.sub.12, wherein x=0-3, having dissolved therein, basis glass, 0-100 pph PbO, (2) 0-100 pph Bi 2 O 3 , and (3) 4-100 pph ZnO, provided that when x=0, the glass has dissolved therein at least 1 pph PbO, dispersed in C. an organic medium which is clean burning at 400°-450° C.
Claim 3
Dependent Claim
26 words
The composition of claim 1 in which the organic medium is comprised of ethyl cellulose dissolved in a mixture of beta-terpineol, dibutyl carbitol and dibutyl phthalate.
Claim 4
Dependent Claim
8 words
The composition of claim 1 in which x=0.1-2.9.
Claim 5
Dependent Claim
8 words
The composition of claim 1 in which x=0.
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) | 1988-07-29 | 1989-01-28 | 1989-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-29 | 1993-01-28 | 1993-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-29 | 1997-01-28 | 1997-07-30 | $7700.00 | Window Closed / Lapsed |