US3998632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal alloy
Assignee: Individual
•
Filing: 1974-12-05
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Granted: 1976-12-21
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Expires: 1994-12-05
Abstract
Abstract Infusible metal alloys are employed both as a parts material and as a brazing spelter for the connection of various parts and components made of materials based upon infusible metals and compounds, ceramics, graphite and the like.
Inventors
- 👤 Valentin Petrovich Kosteruk
- 👤 Mikhail Savvich Kovalchenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:19
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/02; C04B37/023; C04B37/026; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/32; C04B37/003; C04B37/006; C04B2235/00; C04B2235/65; C04B2235/658; C04B2235/6581; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/122; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/343; C04B2237/36; C04B2237/363; C04B2237/40; C04B2237/403; C04B2237/50; C04B2237/56; C04B2237/567
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
120 words
A brazing spelter composition, especially useful for joining high melting carbides, borides, nitrides and silicides and ceramics to each other or to high melting metals, comprising an alloy consisting essentially of hafnium as a major constituent, a first additive component selected from the group consisting of copper, gold, silver and mixtures thereof, in an amount of from 2 to 30 percent of the alloy weight, and a second additive component selected from the group consisting of boron, aluminum, scandium, yttrium, lanthanides, carbon, silicon, genanium, titanium, zirconium, vanadium, niobium (columbium), tantalum, phospohorus, chromium, molybdenum, tungsten, manganese, technetium (masurium), rhenium, ruthenium, osmium, cobalt, nickel, rhodium, iridium, platinum, and mixtures thereof in an amount of 2 to 21 percent of the alloy weight.
Claim 2
Dependent Claim
120 words
A brazing spelter composition, especially useful for joining high melting carbides, borides, nitrides and silicides and ceramics to each other or to high melting metals, comprising an alloy consisting essentially of hafnium as a major constituent, a first additive component selected from the group consisting of copper, gold, silver and mixtures thereof, in an amount of from 2 to 30 percent of the alloy weight, and a second additive component selected from the group consisting of boron, aluminum, scandium, yttrium, lanthanides, carbon, silicon, genanium, titanium, zirconium, vanadium, niobium (columbium), tantalum, phospohorus, chromium, molybdenum, tungsten, manganese, technetium (masurium), rhenium, ruthenium, osmium, cobalt, nickel, rhodium, iridium, platinum, and mixtures thereof in an amount of 2 to 21 percent of the alloy weight.
Claim 3
Dependent Claim
38 words
A brazing spelter composition of claim 1 wherein the first component is present in an amount of from 20 to 30% of the alloy weight to provide a melting point of the alloy between 1000° and 1200° C.
Claim 4
Dependent Claim
38 words
A brazing spelter composition of claim 1 wherein the first component is present in an amount of from 12 to 20% of the alloy weight to provide a melting point of the alloy between 1200° and 1500° C.
Claim 5
Dependent Claim
38 words
A brazing spelter composition of claim 1 wherein the first component is present in an amount of from 8 to 12% of the alloy weight to provide a melting point of the alloy between 1500° and 1800° C.
Claim 6
Dependent Claim
38 words
A brazing spelter composition of claim 1 wherein the first component is present in an amount of from 3 to 8% of the alloy weight to provide a melting point of the alloy between 1800° and 1200° C.
Claim 7
Dependent Claim
19 words
A brazing spelter composition of claim 2 consisting essentially of 25% Cu, 3% La, 5% Co, and balance Hf.
Claim 8
Dependent Claim
21 words
A brazing spelter composition of claim 2 consisting essentially of 30% Cu, 5% Ti, 4% Zr, 3% Ni and balance Hf.
Claim 9
Dependent Claim
20 words
A brazing spelter composition of claim 2 consisting essentially of 26%Ag, 1% Nb, 1.5% Ni, 1% Mn, and balance Hf.
Claim 10
Dependent Claim
19 words
A brazing spelter composition of claim 3 consisting essentially of 16% Cu, 2% Cr, 5% Ti, and balance Hf.
Claim 11
Dependent Claim
28 words
A brazing spelter composition of claim 4 consisting essentially of 1% Zr, 2% W, 8% of a first component selected from Cu and Ag and the balance Hf.
Claim 12
Dependent Claim
21 words
A brazing spelter composition of claim 5 consisting essentially of 2% Cu, 1% Ag, 5% Ti, 1% Zr, and balance Hf.
Claim 13
Dependent Claim
17 words
A brazing spelter composition of claim 1 consisting essentially of 2% Cu, 5% W and balance Hf.
Claim 14
Dependent Claim
81 words
A brazing spelter composition comprising an alloy consisting essentially of hafnium as a major constituent, a component selected from the group consisting of copper, gold, silver and mixtures thereof, an amount of from 2 to 30 percent of the alloy weight and a second component having a melting point above 600° C. and constituted of at least one element selected from groups III-VIII of the periodic system in an amount of from 2 to 21 percent of the total alloy weight.
Claim 15
Dependent Claim
81 words
A brazing spelter composition comprising an alloy consisting essentially of hafnium as a major constituent, a component selected from the group consisting of copper, gold, silver and mixtures thereof, an amount of from 2 to 30 percent of the alloy weight and a second component having a melting point above 600° C. and constituted of at least one element selected from groups III-VIII of the periodic system in an amount of from 2 to 21 percent of the total alloy weight.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-12-21 | 1980-06-21 | 1980-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-21 | 1984-06-21 | 1984-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-21 | 1988-06-21 | 1988-12-21 | $7700.00 | Window Closed / Lapsed |