US3864715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diode array-forming electrical element
Assignee: EIDP Inc
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Filing: 1972-12-22
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Granted: 1975-02-04
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Expires: 1992-12-22
Abstract
Abstract A normally insulative layered element, useful in diode array preparation and comprising an electrically activatable electrode composition of metal particles dispersed in a polymeric binder, which composition contacts a semiconductor material.
Inventors
- 👤 Sebastian Vito Roc Mastrangelo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:07
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/36; G; G11; G11C; G11C11/00; G11C11/21; G11C11/34; G11C11/36; G11C17/00; G11C17/06; G11C17/14; G11C17/16; H10; H10D; H10D62/00; H10D62/40; H10D62/80; H10D62/82; H10D84/00; H10D84/201; H10D84/204; H10D84/221; H10P; H10P95/00; H10W; H10W20/00; H10W20/01; H10W20/031; H10W20/40; H10W20/41; H10W20/44; H10W20/4473; H10W20/45; H10W20/48
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
131 words
A LAYERED ELECTRICAL ELEMENT WHICH COMPRISES: A. AN ACTIVATABLE ELECTRODE COMPOSITION CONSISTING ESSENTIALLY OF AN INSULATING BINDER HAVING INSULATIVELY COATED METAL PARTICLES DISPERSED THEREIN, WITH THE PARTICLES AND BINDER TOGETHER CONSTITUTING AN INSULATOR IN THE UNACTIVATED STATE BUT BEING CAPABLE OF BECOMING ELECTRICALLY CONDUCTIVE ON EXPOSURE TO AN ACTIVATING POTENTIAL, AND B. A SEMICONDUCTOR COMPONENT DISPOSED IN AN INSULATING BINDER IN CONTACT WITH (A), SAID LAYERED ELEMENT PRESENTING A FIRST SURFACE AND A SECOND OPPOSING SURFACE AND A VOLUME THEREBETWEEN WHICH ARE NORMALLY NON-CONDUCTIVE, SAID ELEMENT BEING NORMALLY INSULATIVE BUT CAPABLE OF EXHIBITING RECTIFYING PROPERTIES WITH RESPECT TO CURRENT FLOW BETWEEN SAID SURFACES UPON ELECTRICAL ACTIVATION, SAID SURFACES BEING CAPABLE OF REMAINING LATERALLY NONCONDUCTIVE AND SAID VOLUME BEING CAPABLE OF BECOMING CONDUCTIVE BETWEEN SAID SURFACES ON EXPOSURE TO SAID ACTIVATING POTENTIAL.
Claim 2
Dependent Claim
131 words
A LAYERED ELECTRICAL ELEMENT WHICH COMPRISES: A. AN ACTIVATABLE ELECTRODE COMPOSITION CONSISTING ESSENTIALLY OF AN INSULATING BINDER HAVING INSULATIVELY COATED METAL PARTICLES DISPERSED THEREIN, WITH THE PARTICLES AND BINDER TOGETHER CONSTITUTING AN INSULATOR IN THE UNACTIVATED STATE BUT BEING CAPABLE OF BECOMING ELECTRICALLY CONDUCTIVE ON EXPOSURE TO AN ACTIVATING POTENTIAL, AND B. A SEMICONDUCTOR COMPONENT DISPOSED IN AN INSULATING BINDER IN CONTACT WITH (A), SAID LAYERED ELEMENT PRESENTING A FIRST SURFACE AND A SECOND OPPOSING SURFACE AND A VOLUME THEREBETWEEN WHICH ARE NORMALLY NON-CONDUCTIVE, SAID ELEMENT BEING NORMALLY INSULATIVE BUT CAPABLE OF EXHIBITING RECTIFYING PROPERTIES WITH RESPECT TO CURRENT FLOW BETWEEN SAID SURFACES UPON ELECTRICAL ACTIVATION, SAID SURFACES BEING CAPABLE OF REMAINING LATERALLY NONCONDUCTIVE AND SAID VOLUME BEING CAPABLE OF BECOMING CONDUCTIVE BETWEEN SAID SURFACES ON EXPOSURE TO SAID ACTIVATING POTENTIAL.
Claim 3
Dependent Claim
33 words
An element according to claim 1 wherein said first surface is in contact with at least one conductor electrode and said opposing surface is in contact with at least one opposing conductor electrode.
Claim 4
Dependent Claim
36 words
An element according to claim 1 wherein the layered element consists essentially of two layers of said activatable composition (a) and positioned therebetween a layer of said semiconductor component (b), said semiconductor layer being laterally non-conductive.
Claim 5
Dependent Claim
23 words
An element according to claim 3 wherein the semiconductor layer consists essentially of an insulating polymeric binder material having semiconductor particles dispersed therein.
Claim 6
Dependent Claim
26 words
An element according to claim 1 wherein the layered element is a single layer having metal particles and semiconductor particles co-dispersed in a common insulating binder.
Claim 7
Dependent Claim
35 words
An element according to claim 1 wherein the metal particles of (a) are selected from the group consisting of aluminum, antimony, bismuth, cadmium, chromium, cobalt, indium, lead, magnesium, manganese, molybdenum, niobium, tantalum, titanium and tungsten.
Claim 8
Dependent Claim
16 words
An element according to claim 1 wherein the metal particles of (a) are aluminum powder particles.
Claim 9
Dependent Claim
31 words
An element according to claim 3 wherein both layers of activatable composition comprise aluminum powder particles having an average particle size of 0.01 to 1,000 microns dispersed in an insulating binder.
Claim 10
Dependent Claim
24 words
An element according to claim 7 wherein the aluminum metal particles of (a) are essentially spheroidal or nodular shaped particles having smooth rounded edges.
Claim 11
Dependent Claim
17 words
An element according to claim 4 wherein the semiconductor particles are gray, highly conductive Beta -selenium particles.
Claim 12
Dependent Claim
23 words
An element according to claim 3 wherein the metal particles dispersed in one of the layers of the activatable composition are cadmium particles.
Claim 13
Dependent Claim
24 words
An element according to claim 4 wherein the binder materials of both (a) and (b) have a glass transition temperature of at least 100*C.
Claim 14
Dependent Claim
32 words
An element according to claim 11 wherein the binder material of both (a) and (b) is an aromatic polyamide prepared from m-phenylenediamine and a 70/30 mixture of isophthaloyl chloride and terephthaloyl chloride.
Claim 15
Dependent Claim
36 words
An element according to claim 1 wherein said first surface is in contact with two or more spaced apart conductor electrodes and said second surface is in contact with two or more spaced apart opposing electrodes.
Claim 16
Dependent Claim
15 words
An element according to claim 1 wherein said semiconductor component (b) is a p-type semiconductor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |