Patent US3929674A successfully refreshed from Google Patents.
US3929674A
Expired / Lapsed
US
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Boride-containing metallizations
Assignee: EIDP Inc
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Filing: 1974-06-03
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Granted: 1975-12-30
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Expires: 1994-06-03
Abstract
Abstract Improved conductor compositions useful in the electronic arts, said compositions comprising finely divided noble metal powder, aluminum boride powder, and optional inorganic binder powder dispersed in an inert vehicle. Other borides, boron, and silicides may also be present. Such compositions may be printed on substrates and fired (sintered) to form microcircuit patterns, end terminations, etc.
Inventors
- 👤 Frank Knowles Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:18
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/80; C04B41/81; C04B41/85; C04B41/88; C04B41/009; C04B41/45; C04B41/50; C04B41/51; C04B41/5111; H; H01; H01B; H01B1/00; H01B1/14; H01B1/16; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
97 words
IN METALLIZING COMPOSITIONS OF A FINELY DIVIDED CONDUCTOR POWDER SELECTED FROM THE CLASS CONSISTING OF PT, PD, AU, AG, AND MIXTURES, ALLOYS, AND OXIDES THEREOF DISPERSED IN AN INERT LIQUID VEHICLE, IMPROVED COMPOSITIONS ADDITIONALLY COMPRISING FINELY DIVIDED ALUMINUM BORIDE; EACH OF THE AFORESAID POWDERS BEING SUFFICIENTLY FINELY DIVIDED TO PASS THROUGH A 200-MESH SCREEN; THE ALUMINUM BORIDE BEING PRESENT IN AN AMOUNT EQUAL TO AT LEAST 0.05% OF THE WEIGHT OF NOBLE METAL IN THE 0.1-20 TION; THE SOLIDS CONTENT OF THE COMPOSITION BEING FROM 0.1-20 PARTS BY WEIGHT OF SOLIDS PER PART BY WEIGHT OF VEHICLE.
Claim 2
Dependent Claim
97 words
IN METALLIZING COMPOSITIONS OF A FINELY DIVIDED CONDUCTOR POWDER SELECTED FROM THE CLASS CONSISTING OF PT, PD, AU, AG, AND MIXTURES, ALLOYS, AND OXIDES THEREOF DISPERSED IN AN INERT LIQUID VEHICLE, IMPROVED COMPOSITIONS ADDITIONALLY COMPRISING FINELY DIVIDED ALUMINUM BORIDE; EACH OF THE AFORESAID POWDERS BEING SUFFICIENTLY FINELY DIVIDED TO PASS THROUGH A 200-MESH SCREEN; THE ALUMINUM BORIDE BEING PRESENT IN AN AMOUNT EQUAL TO AT LEAST 0.05% OF THE WEIGHT OF NOBLE METAL IN THE 0.1-20 TION; THE SOLIDS CONTENT OF THE COMPOSITION BEING FROM 0.1-20 PARTS BY WEIGHT OF SOLIDS PER PART BY WEIGHT OF VEHICLE.
Claim 3
Dependent Claim
46 words
Compositions according to claim 1 additionally comprising a finely divided refractory additive powder which is elemental boron, a metal boride other than aluminum boride, a metal silicide, or mixtures thereof, the weight of said refractory additive powder being up to twice the weight of aluminum boride.
Claim 4
Dependent Claim
30 words
A composition according to claim 1 additionally comprising an inorganic oxide binder powder for said conductor powder, in an amount up to 50% of the weight of said conductor powder.
Claim 5
Dependent Claim
30 words
A composition according to claim 2 additionally comprising an inorganic oxide binder poWder for said conductor powder, in an amount up to 50% of the weight of said conductor powder.
Claim 6
Dependent Claim
19 words
Compositions according to claim 1 wherein the conductor powder is Pt, Pd, Au, Ag, or mixtures or alloys thereof.
Claim 7
Dependent Claim
19 words
Compositions according to claim 2 wherein theh conductor powder is Pt, Pd, Au, Ag or mixtures or alloys thereof.
Claim 8
Dependent Claim
19 words
Compositions according to claim 3 wherein the conductor powder is Pt, Pd, Au, Ag or mixtures or alloys thereof.
Claim 9
Dependent Claim
19 words
Compositions according to claim 4 wherein the conductor powder is Pt, Pd, Au, Ag or mixtures or alloys thereof.
Claim 10
Dependent Claim
14 words
A conductor of the sintered powder of claim 1, adherent to a dielectric substrate.
Claim 11
Dependent Claim
14 words
A conductor of the sintered powder of claim 2, adherent to a dielectric substrate.
Claim 12
Dependent Claim
14 words
A conductor of the sintered powder of claim 3, adherent to a dielectric substrate.
Claim 13
Dependent Claim
14 words
A conductor of the sincered powder of claim 4, adherent to a dielectric substrate.
Claim 14
Dependent Claim
14 words
A conductor of the sintered powder of claim 5, adherent to a dielectric substrate.
Claim 15
Dependent Claim
14 words
A conductor of the sintered powder of claim 6, adherent to a dielectric substrate.
Claim 16
Dependent Claim
14 words
A conductor of the sintered powder of claim 7, adherent to a dielectric substrate.
Claim 17
Dependent Claim
14 words
A conductor of the sintered powder of claim 8, adherent to a dielectric substrate.
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) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |