US4566992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solutions for the fusion of one metal to another
Assignee: Metafuse Ltd
•
Filing: 1981-12-28
•
Granted: 1986-01-28
•
Expires: 2001-12-28
Abstract
Abstract A soluion for the fusion of a second metal to a first metal which comprises 0.10 to 10% of the second metal in a dissociable form; and a solvent chosen from the group comprising water, an organic solvent or a mixture thereof, the solution having a conductivity in the range 10 to 80 ohms cm.
Inventors
- 👤 Ady Joseph
- 👤 Lily Mayer
- 👤 Alexander Miutel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:19
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/18; C25D17/00; C25D17/10; C25D17/14; C25D5/60; C25D5/605; C25D5/623; C25D5/627
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
170 words
A solution for the fusion of a second metal to a first metal consisting essentially of: 0.10 to 10% by weight of a first compound including said second metal in a dissociable polyvalent form; 0.30 to 10% by weight of a second compound capable of complexing with the first compound, the first compound and the second compound being either soluble in water or forming a complex which is soluble in water; 0.1 to 0.5% by weight of a stabilizing agent which maintains the first compound, the second compound and the complex thereof in solution; 0.1 to 0.5% by weight of a catalyzer for promoting the speed of reaction, reducing the valency of the polyvalent form of said second metal to a lower valency and catalyzing complexing action between the first and second compound; and the remainder a solvent selected from the group consisting of water, an organic solvent or a mixture thereof whereby said solution has a resistivity in the range of 10 to 80 ohms cm at room temperature.
Claim 2
Dependent Claim
170 words
A solution for the fusion of a second metal to a first metal consisting essentially of: 0.10 to 10% by weight of a first compound including said second metal in a dissociable polyvalent form; 0.30 to 10% by weight of a second compound capable of complexing with the first compound, the first compound and the second compound being either soluble in water or forming a complex which is soluble in water; 0.1 to 0.5% by weight of a stabilizing agent which maintains the first compound, the second compound and the complex thereof in solution; 0.1 to 0.5% by weight of a catalyzer for promoting the speed of reaction, reducing the valency of the polyvalent form of said second metal to a lower valency and catalyzing complexing action between the first and second compound; and the remainder a solvent selected from the group consisting of water, an organic solvent or a mixture thereof whereby said solution has a resistivity in the range of 10 to 80 ohms cm at room temperature.
Claim 3
Dependent Claim
28 words
A solution as claimed in claim 1 wherein said stabilizing agent is selected from the group consisting of boric acid, citric acid, citrates, pyrophosphates, acetates and aluminum sulphate.
Claim 4
Dependent Claim
37 words
A solution as claimed in claim 1 wherein said catalyzing agent is selected from the group consisting of metallic ions including iron, nickel, anitmony and zinc and organic compounds including dextrine, hydroquinone, gelatin, pepsin and acacia gum.
Claim 5
Dependent Claim
37 words
A solution as claimed in claim 2 wherein said catalyzing agent is selected from the group consisting of metallic ions including iron, nickel, antimony and zinc and organic compounds including dextrine, hydroquinone, gelatin, pepsin and acacia gum.
Claim 6
Dependent Claim
41 words
A solution as claimed in claim 4 wherein the second compound is selected from the group consisting of one of pyrophosphates, ethylene diamine tetracetic acid, citric acid, and potassium iodide and the like, the pyrophosphates also serving as the stabilizing agent.
Claim 7
Dependent Claim
59 words
A solution as claimed in claim 5 wherein the dissociable polyvalent form of said second metal is selected from the group consisting of metallic salts or acids and comprising sodium molybdate, sodium tungstate, indium sulphate, nickelous sulphate, nickelous chloride, chloroauric acid, chromium trioxide, chromium sulphate, chromic chloride, cadmium chloride, cadmium sulphate, stannous chloride cobaltous sulphate, silver cyanide, silver nitrate.
Claim 8
Dependent Claim
14 words
A solution as claimed in claim 5 further including a wetting agent and surfactants.
Claim 9
Dependent Claim
30 words
A solution as claimed in claim 1 wherein the first metal is selected from the group consisting of molybdenum, tungsten, indium, nickel, gold, chromium, silver, cadmium, tin, cobalt and silver.
Claim 10
Dependent Claim
20 words
A solution as claimed in claim 4 wherein the solution has a pH in the range of 0.4 to 14.
Claim 11
Dependent Claim
89 words
A solution for the fusion of a second metal to a first metal consisting essentially of: 0.10 to 10% by weight of a first compound including said second metal in a dissociable form; at least one of a stabilizing agent which maintains the first compound and a catalyzer for promoting the speed of reaction; and a solvent selected from the group comsisting of water, an organic solvent or a mixture thereof whereby said solution has a resistivity in the range of 10 to 80 ohms cm at room temperature.
Claim 12
Dependent Claim
89 words
A solution for the fusion of a second metal to a first metal consisting essentially of: 0.10 to 10% by weight of a first compound including said second metal in a dissociable form; at least one of a stabilizing agent which maintains the first compound and a catalyzer for promoting the speed of reaction; and a solvent selected from the group comsisting of water, an organic solvent or a mixture thereof whereby said solution has a resistivity in the range of 10 to 80 ohms cm at room temperature.
Claim 13
Dependent Claim
24 words
A solution as claimed in claim 10 wherein said solvent is water and said solution has a pH in the range 0.4 to 14.
Claim 14
Dependent Claim
17 words
A solution as claimed in claim 11 wherein said solution further includes a second metal complexing agent.
Claim 15
Dependent Claim
35 words
A solution as claimed in claim 12 wherein said solution further includes both the stabilizing agent for maintaining either the first compound and said second metal or the complex thereof in solution and the catalyzer.
Claim 16
Dependent Claim
12 words
A solution as claimed in claim 13 further including a wetting agent.
Claim 17
Dependent Claim
20 words
A solution as claimed in claim 14 wherein said second metal is present as a salt or an acid thereof.
Claim 18
Dependent Claim
27 words
A solution as claimed in claim 15 wherein said second metal complexing agents are selected from the group consisting of organic acids, organic salts and halogen salts.
Claim 19
Dependent Claim
23 words
A solution as claimed in claim 13 wherein said stabilizing agents are chosen from the group consisting of organic salts or inorganic salts.
Claim 20
Dependent Claim
20 words
A solution as claimed in claim 13 wherein said catalyzing agent is selected from the group consisting of metallic ions.
Claim 21
Dependent Claim
35 words
A solution as claimed in claim 18 wherein said catalyzing agent is selected from the group consisting of a soluble organic compound selected from the group consisting of dextrine, hydroquinone, gelatin, pepsin or acacia gum.
References Cited (Backward Citations)
US2215102A
Cited
US2445177A
Cited
US2811484A
Cited
US3097291A
Cited
US3277266A
Cited
US3277267A
Cited
US3524956A
Cited
US3741426A
Cited
US3746627A
Cited
US3832514A
Cited
US3865697A
Cited
US4205211A
Cited
US4159934A
Cited
US4220504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-27 | 1989-07-29 | 1990-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-27 | 1993-07-29 | 1994-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-27 | 1997-07-29 | 1998-01-28 | $7700.00 | Window Closed / Lapsed |