US4908346A — Crystalline rare earth alkaline earth copper oxid…

Claim 1

Independent Claim 93 words

A circuit element comprising an insulative substrate and means for providing a conductive path between at least two locations on the substrate including a thick film conductor, the thick film conductor being comprised of a crystalline rare earth alkaline earth copper oxide layer having a thickness of at least 5 μm, characterized in that said substrate is strontium titanate and said crystalline rare earth alkaline earth coppper oxide layer exhibits a superconducting onset transition temperature in excess of 77° K. and is comprised of a R 1 A 2 C 3 crystalline phase.

Claim 2

Dependent Claim 93 words

A circuit element comprising an insulative substrate and means for providing a conductive path between at least two locations on the substrate including a thick film conductor, the thick film conductor being comprised of a crystalline rare earth alkaline earth copper oxide layer having a thickness of at least 5 μm, characterized in that said substrate is strontium titanate and said crystalline rare earth alkaline earth coppper oxide layer exhibits a superconducting onset transition temperature in excess of 77° K. and is comprised of a R 1 A 2 C 3 crystalline phase.

Claim 3

Dependent Claim 92 words

A circuit element comprising an insulative substrate and means for providing a conductive path between at least two locations on the substrate including a thick film conductor, the thick film conductor being comprised of a crystalline rare earth alkaline earth copper oxide layer having a thickness of at least 5 μm, characterized in that said substrate is magnesia and said crystalline rare earth alkaline earth copper oxide layer exhibits a superconducting onset transition temperature in excess of 77° K. and is comprised of a R 1 A 2 C 3 crystalline phase.

Claim 4

Dependent Claim 92 words

A circuit element comprising an insulative substrate and means for providing a conductive path between at least two locations on the substrate including a thick film conductor, the thick film conductor being comprised of a crystalline rare earth alkaline earth copper oxide layer having a thickness of at least 5 μm, characterized in that said substrate is magnesia and said crystalline rare earth alkaline earth copper oxide layer exhibits a superconducting onset transition temperature in excess of 77° K. and is comprised of a R 1 A 2 C 3 crystalline phase.

Claim 5

Dependent Claim 92 words

A circuit element comprising an insulative substrate and means for providing a conductive path between at least two locations on the substrate including a thick film conductor, the thick film conductor being comprised of a crystalline rare earth alkaline earth copper oxide layer having a thickness of at least 5 μm, characterized in that said substrate is alumina and said crystalline rare earth alkaline earth copper oxide layer exhibits a superconducting onset transition temperature in excess of 77° K. and is comprised of a R 1 A 2 C 3 crystalline phase.

Claim 6

Dependent Claim 92 words

A circuit element comprising an insulative substrate and means for providing a conductive path between at least two locations on the substrate including a thick film conductor, the thick film conductor being comprised of a crystalline rare earth alkaline earth copper oxide layer having a thickness of at least 5 μm, characterized in that said substrate is alumina and said crystalline rare earth alkaline earth copper oxide layer exhibits a superconducting onset transition temperature in excess of 77° K. and is comprised of a R 1 A 2 C 3 crystalline phase.

Claim 7

Dependent Claim 93 words

A circuit element comprising an insulative substrate and means for providing a conductive path between at least two locations on the substrate including a thick film conductor, the thick film conductor being comprised of a crystalline rare earth alkaline earth copper oxide layer having a thickness of at least 5 μm, characterized in that said substrate is aluminum nitride and said crystalline rare earth alkaline earth copper oxide layer exhibits a superconducting onset transition temperature in excess of 77° K. and is comprised of a R 1 A 2 C 3 crystalline phase.

Claim 8

Dependent Claim 93 words

A circuit element comprising an insulative substrate and means for providing a conductive path between at least two locations on the substrate including a thick film conductor, the thick film conductor being comprised of a crystalline rare earth alkaline earth copper oxide layer having a thickness of at least 5 μm, characterized in that said substrate is aluminum nitride and said crystalline rare earth alkaline earth copper oxide layer exhibits a superconducting onset transition temperature in excess of 77° K. and is comprised of a R 1 A 2 C 3 crystalline phase.

Claim 9

Dependent Claim 46 words

A circuit element according to any one of claims 1, 2, 3, and 4 further characterized in that the thick film is comprised of a crystalline rare earth alkaline earth copper oxide layer having a thickness in the range of from 5 μm to 200 μm.

Claim 10

Dependent Claim 28 words

A circuit element according to any one of claims 1, 2, 3, and 4 further characterized in that the thick film is at least 10 μm in thickness.

Claim 11

Dependent Claim 46 words

A circuit element according to any one of claims 1, 2, 3, and 4 further characterized in that the thick film is comprised of a crystalline rare earth alkaline earth copper oxide layer having a thickness in the range of from 10 μm to 100 μm.

Claim 12

Dependent Claim 30 words

A circuit element according to any one of claims 1, 2, 3, and 4 further characterized in that the thick film conductor is restricted to a portion of the substrate.

Claim 13

Dependent Claim 49 words

A circuit element according to any one of claims 1, 2, 3, and 4 further characterized in that the rare earth alkaline earth copper oxide consists of yttrium as the rare earth and barium, optionally in combination with at least one of strontium and calcium, as the alkaline earth.

Claim 14

Dependent Claim 28 words

A circuit element according to any one of claims 1, 2, 3, and 4 further characterized in that the conductive path means includes at least one semiconductor device.

Claim 15

Dependent Claim 27 words

A circuit element according to any one of claims 1, 2, 3, and 4 further characterized in that the conductive path means includes at least one capacitor.

Claim 16

Dependent Claim 27 words

A circuit element according to any one of claims 1, 2, 3, and 4 further characterized in that the conductive path means includes at least one resistor.

Claim 17

Dependent Claim 36 words

A circuit element according to any one of claims 1, 2, 3, and 4 further characterized in that the crystalline rare earth alkaline earth copper oxide forms a sinuous serpentine or spiral path electrical conduction path.

Claim 18

Dependent Claim 49 words

A circuit element according to any one of claims 1, 2, 3, and 4 further characterized in that the conductive path means includes at least one electrically conductive device presenting a metallic lead and means conductively bonding the metallic lead to the crystalline rare earth alkaline earth copper oxide.

Claim 19

Dependent Claim 142 words

A circuit element comprising an insulative substrate presenting first and second parallel major surfaces and a first means for providing a conductive path between at least two locations on the first major surface including a first thick film conductor, a second means for providing a conductive path between at least two locations on the second major surface incoluding a second thick film conductor, said first and second thick film conductors each having a thickness of at least 5 μm, characterized in that the first and second thick film conductors are each comprised of a crystalline rare earth alkaline earth copper oxide exhibits a superconducting onset transition temperature in excess of 77° K. and is comprised of a R 1 A 2 C 3 crystalline phase and the substrate is chosen from the class consisting of strontium titanate, magnesia, alumina, and aluminum nitride.

Claim 20

Dependent Claim 142 words

A circuit element comprising an insulative substrate presenting first and second parallel major surfaces and a first means for providing a conductive path between at least two locations on the first major surface including a first thick film conductor, a second means for providing a conductive path between at least two locations on the second major surface incoluding a second thick film conductor, said first and second thick film conductors each having a thickness of at least 5 μm, characterized in that the first and second thick film conductors are each comprised of a crystalline rare earth alkaline earth copper oxide exhibits a superconducting onset transition temperature in excess of 77° K. and is comprised of a R 1 A 2 C 3 crystalline phase and the substrate is chosen from the class consisting of strontium titanate, magnesia, alumina, and aluminum nitride.

Claim 21

Dependent Claim 144 words

A circuit element comprising an insulative substrate presenting first and second parallel major surfaces, a first means for providing a conductive path between at least two locations on the first major surface including a thick film conductor having a thickness of at least 5 μm, a second means for providing a conductive path between at least two locations on the second major surface including a thick film conductor, and a third means for providing a conductive path between the first and second conductive path means, characterized in that the first means is comprised of a crystalline rare earth alkaline earth copper oxide which exhibits a superconducting onset transition temperature in excess of 77° K. and is comprised of a R 1 A 2 C 3 crystalline phase and the substrate is chosen from the class consisting of strontium titanate, magnesia, alumina, and aluminum nitride.

Claim 22

Dependent Claim 144 words

A circuit element comprising an insulative substrate presenting first and second parallel major surfaces, a first means for providing a conductive path between at least two locations on the first major surface including a thick film conductor having a thickness of at least 5 μm, a second means for providing a conductive path between at least two locations on the second major surface including a thick film conductor, and a third means for providing a conductive path between the first and second conductive path means, characterized in that the first means is comprised of a crystalline rare earth alkaline earth copper oxide which exhibits a superconducting onset transition temperature in excess of 77° K. and is comprised of a R 1 A 2 C 3 crystalline phase and the substrate is chosen from the class consisting of strontium titanate, magnesia, alumina, and aluminum nitride.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1993-03-12	1993-09-11	1994-03-13	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1997-03-12	1997-09-11	1998-03-13	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2001-03-12	2001-09-11	2002-03-13	$7700.00	Window Closed / Lapsed

Crystalline rare earth alkaline earth copper oxide thick film circuit element with superconducting onset transition temperature in excess of 77%

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