US4004057A
Expired / Lapsed
US
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Gold conductor compositions
Assignee: EIDP Inc
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Filing: 1976-03-12
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Granted: 1977-01-18
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Expires: 1996-03-12
Abstract
Abstract This invention relates to dispersions of gold and a certain inorganic binder in an inert liquid vehicle, useful in the electronics art for producing conductor patterns adherent to substrates. Small amounts of the binder are effective in producing excellent adhesion to substrates, such as ceramic substrates. The binders comprise certain amounts of the crystalline materials PbF 2 , Cu 2 O, and CdO, in addition to a glass of, by weight, 45-52% PbO, 3-6% B 2 O 3 , 30-35% SiO 2 , 4-6% TiO 2 , 2-4% ZrO 2 , 0-1% ZnO, 1-4% Na 2 O, 0-4% CdO, and 0-2% Li 2 O.
Inventors
- 👤 Lewis Charles Hoffman
- 👤 Charles William McMunn
- 👤 Arthur Harvey Mones
- 👤 Oliver Alton Short
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:11
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/14; H01B1/16; C; C04; C04B; C04B41/00; C04B41/45; C04B41/50; C04B41/51; C04B41/5183; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24917; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
84 words
Conductor patterns of a composition of, by weight, 95.0-98.1% gold particles and, complementally, 1.9-5.0% inorganic binder particles, the binder consisting essentially of, by total weight of gold and binder, 0.3-1.5% crystalline PbF 2 0.06-0.32% crystalline Cu 2 O 0.2-1.5% crystalline CdO and 0.5-1.95% glass, the glass having the composition 45-52% PbO 3-6% b 2 o 3 30-35% siO 2 4-6% tiO 2 2-4% zrO 2 0-1% znO - 4% na 2 O 0-4% cdO and 0-2% Li 2 O, adherent to a dielectric substrate.
Claim 2
Dependent Claim
84 words
Conductor patterns of a composition of, by weight, 95.0-98.1% gold particles and, complementally, 1.9-5.0% inorganic binder particles, the binder consisting essentially of, by total weight of gold and binder, 0.3-1.5% crystalline PbF 2 0.06-0.32% crystalline Cu 2 O 0.2-1.5% crystalline CdO and 0.5-1.95% glass, the glass having the composition 45-52% PbO 3-6% b 2 o 3 30-35% siO 2 4-6% tiO 2 2-4% zrO 2 0-1% znO - 4% na 2 O 0-4% cdO and 0-2% Li 2 O, adherent to a dielectric substrate.
Claim 3
Dependent Claim
30 words
Conductor patterns according to claim 1 wherein the composition is of 96.1% gold and about 3.9% binder of 1.1% PbF 2 0.3% cu 2 O 1.1% cdO and 1.4% glass.
Claim 4
Dependent Claim
42 words
Conductor patterns according to claim 1 wherein the glass has the approximate composition 48.5% PbO 3.0% b 2 o 3 33.5% siO 2 5.5% tiO 2 2.7% zrO 2 0.6% znO 2.5% na 2 O 2.4% cdO and 1.3% Li 2 O.
Claim 5
Dependent Claim
13 words
Conductor patterns according to claim 2 wherein the glass has the approximate composition
Claim 6
Dependent Claim
29 words
5% PbO 3.0% b 2 o 3 33.5% siO 2 5.5% tiO 2 2.7% zrO 2 0.6% znO 2.5% na 2 O 2.4% cdO and 1.3% Li 2 O.
Claim 7
Dependent Claim
29 words
5% PbO 3.0% b 2 o 3 33.5% siO 2 5.5% tiO 2 2.7% zrO 2 0.6% znO 2.5% na 2 O 2.4% cdO and 1.3% Li 2 O.
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) | 1980-01-18 | 1980-07-19 | 1981-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-18 | 1984-07-19 | 1985-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-18 | 1988-07-19 | 1989-01-18 | $7700.00 | Window Closed / Lapsed |