Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
79 words
A substrate with an enamel layer having a heterogeneous structure containing at least two different phases obtained by applying a homogeneous, alkali-containing enamel powder to the substrate followed by heating at 850° to 1,000° C. wherein the enamel powder has the composition consists essentially of ______________________________________
Si.sub.O2 40-50% by weight
Al.sub.2 O.sub.3 8-15% by weight
Na.sub.2 O + K.sub.2 O
4-16% by weight
CaO + BaO 25-35% by weight
MgO 0-3% by weight
B.sub.2 O.sub.3 0-10% by weight.
______________________________________
Claim 2
Dependent Claim
79 words
A substrate with an enamel layer having a heterogeneous structure containing at least two different phases obtained by applying a homogeneous, alkali-containing enamel powder to the substrate followed by heating at 850° to 1,000° C. wherein the enamel powder has the composition consists essentially of ______________________________________
Si.sub.O2 40-50% by weight
Al.sub.2 O.sub.3 8-15% by weight
Na.sub.2 O + K.sub.2 O
4-16% by weight
CaO + BaO 25-35% by weight
MgO 0-3% by weight
B.sub.2 O.sub.3 0-10% by weight.
______________________________________
Claim 3
Dependent Claim
23 words
The enamelled substrate according to claim 1 wherein the enamel powder is applied to the substrate by electrophoretic deposition from an aqueous solution.
Claim 4
Dependent Claim
20 words
The enamelled substrate according to claim 1 wherein the enamel powder is applied to the substrate by powder electrostatic application.
Claim 5
Dependent Claim
25 words
The enamelled substrate according to claim 1 wherein the enamel powder is applied to the substrate in the form of a paste containing said powder.
Claim 6
Dependent Claim
14 words
The enamelled substrate according to claim 4 wherein the substrate is glass or ceramic.
Claim 7
Dependent Claim
14 words
The enamelled substrate according to claim 1 wherein the substrate is a metal substrate.
Claim 8
Dependent Claim
20 words
The enamelled substrate according to claim 1 wherein the substrate is a perforated metal core for electric printed circuit boards.
Claim 9
Dependent Claim
18 words
The enamelled substrate according to claim 1 wherein the substrate is electrically conductive structures in multilayered electric circuits.
Claim 10
Dependent Claim
22 words
An electronic circuit combination comprising passive electronic elements placed on the enamelled substrate of claim 1 by thick or thin film techniques.
Claim 11
Dependent Claim
25 words
An electronic circuit combination according to claim 9 wherein the passive electronic elements comprise electrically conductive paths applied to the enamelled layer by screen printing.