US3783506A
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US
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Method of producing electrical fuse elements
Assignee: Individual
•
Filing: 1971-10-12
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Granted: 1974-01-08
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Expires: 1991-10-12
Abstract
Abstract The present disclosure relates to a method of producing electrical fuse elements by single or multiple vacuum deposition of one or several electrically conductive elements or compounds onto substrates of insulating materials in forming thereon resistance paths having predetermined geometrical configurations and a predetermined electrical conductivity and/or magnetic, optical, radioactive, photoconductive or semiconductive properties.
Inventors
- 👤 L Rehfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:20
CPC Classifications
H; H01; H01H; H01H69/00; H01H69/02; H01H69/022; H01B; H01B1/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49107
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
100 words
A method of producing electrical fuse elements having a predetermined pattern of resistance paths of predetermined conductivity and predetermined temperature coefficient, which comprises vacuum depositing on a carrier substrate of insulating material, a material having three components, to wit: a. a substance exhibiting current-conducting characteristics; b. a physically neutral base substance selected from the group consisting of silicon monoxide, metal boride, metal silicide and quartz; and c. a physically active doping substance having optical, magnetic, photoelectrical or radioactive characteristics, said material being vacuum deposited on selected areas of said substrate so as to form said predetermined pattern of resistance paths.
Claim 2
Independent Claim
100 words
A method of producing electrical fuse elements having a predetermined pattern of resistance paths of predetermined conductivity and predetermined temperature coefficient, which comprises vacuum depositing on a carrier substrate of insulating material, a material having three components, to wit: a. a substance exhibiting current-conducting characteristics; b. a physically neutral base substance selected from the group consisting of silicon monoxide, metal boride, metal silicide and quartz; and c. a physically active doping substance having optical, magnetic, photoelectrical or radioactive characteristics, said material being vacuum deposited on selected areas of said substrate so as to form said predetermined pattern of resistance paths.
Claim 3
Dependent Claim
34 words
A method as claimed in claim 1, wherein subsequently a substance having dielectric characteristics is vacuum deposited on said pattern of resistance paths thereby to form a protective insulating coating on said resistance paths.
Claim 4
Dependent Claim
26 words
A method according to claim 1 wherein soldering or mechanical contact pads are deposited onto the substrate together with the resistance paths at either end thereof.
Claim 5
Dependent Claim
30 words
A method according to claim 1 wherein the substrate is a dielectric substrate material having a thickness up to about 5 microns onto which the resistance paths are vacuum deposited.
Claim 6
Dependent Claim
115 words
A method according to claim 1 wherein as active doping substance (c) are used elements or compounds having a low or a high electrical conductivity and being selected from the group consisting of Ag, Al, Au, Be, Cd, Co, Cu, Fe, In, Mg, Mn, Mo, Nb, Nd, Ni, Os, Pb, Pd, Pr, Pt, Rb, Re, Rh, Ru, Sb, Sc, Sm, Sn, Sr, Ta, Th, Ti, Tl, Tm, V, W, Y, Yb, Zn, Zr alloys of said elements and oxygen compounds of said elements, provided, if oxygen compounds of said elements are used, the oxygen compound of the element that is deposited upon the substrate is of a lower oxidation stage than the original oxygen compound.
Claim 7
Dependent Claim
107 words
A method according to claim 1 wherein as active doping substance (c) are used elements or compounds exhibiting optical properties and being selected from the group consisting of (a) the rare earths, (b) compounds of the rare earths and oxygen, (c) compounds of the rare earths and group VII elements of the periodic table, and (d) Ag, Al, Au, Be, Co, Cu, Fe, In, Mg, Mn, Mo, Nd, Ni, Pb, Sb, Ta, Th, Ti, W, Y, Zn, Zr, as well as oxygen compounds of said elements (d) and compounds of said elements (d) with group VII elements of the periodic table, and alloys of said elements (d).
Claim 8
Dependent Claim
41 words
A method according to claim 1 wherein as active doping substance (c) are used elements or compounds having magnetic properties and being selected from the group consisting of Co, Fe, Ni, oxygen compounds of said elements and alloys of said elements.
Claim 9
Dependent Claim
87 words
A method according to claim 1 wherein as the active doping substance (c) are used elements or compounds having photoconductive properties and being selected from the group consisting of Ag, Al, As, Au, Ba, Be, Bi, Ca, Cd, Ce, Co, Cr, Cs, Cu, Fe, Ga, Ge, In, K, La, Li, Mg, Mn, Mo, Pb, Pd, Rb, Re, Rh, Sb, Se, Si, Sn, Sr, Ta, Te, Th, Ti, Tl, V, W, Zn, Zr and compounds of said elements with an element of group VIII of the periodic table.
Claim 10
Dependent Claim
48 words
A method according to claim 1 wherein as active doping substance (c) are used elements or compounds having radioactive properties and being selected from the group consisting of Ac, Am, At, Bc, Cf, Cm, Es, Fm, Fr, Md, Np, No, Pu, Po, Pm, Pa, Ra, Rn and Tc.
Claim 11
Dependent Claim
33 words
A method according to claim 1 wherein as active doping substance (c) are used elements or compounds having semiconductive properties and being selected from the group consisting of germanium, silicon and compounds thereof.
Claim 12
Independent Claim
104 words
A method of producing electrical fuse elements having a predetermined pattern of resistance paths of predetermined conductivity and predetermined temperature coefficient, which comprises: a. applying on a substrate a layer of a material which is soluble in an organic solvent; b. vacuum depositing On the layer of (a) a dielectric layer of inorganic material; c. thereafter vacuum depositing a predetermined pattern of resistance paths of an electrically conductive material on said dielectric layer of (b); and d. dissolving layer (a) with an organic solvent, whereby a structure composed of the dielectric layer (b) and said pattern of resistance paths vacuum deposited thereon is obtained.
Claim 13
Independent Claim
104 words
A method of producing electrical fuse elements having a predetermined pattern of resistance paths of predetermined conductivity and predetermined temperature coefficient, which comprises: a. applying on a substrate a layer of a material which is soluble in an organic solvent; b. vacuum depositing On the layer of (a) a dielectric layer of inorganic material; c. thereafter vacuum depositing a predetermined pattern of resistance paths of an electrically conductive material on said dielectric layer of (b); and d. dissolving layer (a) with an organic solvent, whereby a structure composed of the dielectric layer (b) and said pattern of resistance paths vacuum deposited thereon is obtained.
Claim 14
Dependent Claim
15 words
A method as claimed in claim 11, wherein said layer (a) is a lacquer layer.
Claim 15
Dependent Claim
58 words
A method as claimed in claim 11, wherein said electrically conductive material (c) has three components, to wit: a. a substance exhibiting current-conducting characteristics; b. a physically neutral base substance selected from the group consisting of silicon monoxide, metal boride, metal silicide and quartz; and c. a physically active doping substance having optical, magnetic, photoelectrical or radioactive characteristics.
Claim 16
Dependent Claim
34 words
A method as claimed in claim 11, wherein subsequently a substance having dielectric characteristics is vacuum deposited on said pattern of resistance paths thereby to form a protective insulating coating on said resistance paths.
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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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |