US4049506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for coating bonding tools and product
Assignee: Tribotech Inc
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Filing: 1976-06-25
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Granted: 1977-09-20
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Expires: 1996-06-25
Abstract
Abstract A method for the electrodeposition of osmium, ruthenium or their alloys from alkali metal salts of the same in a nonaqueous solvent capable of permitting dissociation of the salt and having low surface tension (e.g., methanol or dimethyl formamide) or mixtures. A silicone layer chemically bonded to the surface of said electrodeposited layer. Also, a bonding tool having a tip coated by either of the above electrodeposited layer or the silicone layer, or both.
Inventors
- 👤 Denis K. Gilding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:15
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/002; B23K20/004; B23K20/005; C; C25; C25D; C25D3/00; C25D3/02; C25D3/50; C25D3/56; C25D3/567; H; H10; H10W; H10W72/00; H10W72/071; H10W72/0711; H10W72/07141; H10W72/075; H10W72/07531; H10W72/07532; H10W72/07533; H10W72/50; H10W72/551; H10W72/552; H10W72/5522; H10W72/5524
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
127 words
A method for bonding a silicone layer to the surface of a microstructural bonding tool for holding a bonding wire against a surface to which the wire is to be bonded during application of energy thereto, which tool comprises an elongate tool body having a wire guide opening and a bonding surface at the end thereof, the method comprising treating the surface of the hard metal substrate to form pendant groups of the general formula, --OM wherein M is hydrogen or a cation having a valence of one, and contacting the treated surface with a silane of the general formula (R) n Si(X) 4-n wherein n varies from 0 to 3, R is an aliphatic or aromatic group and X is a halogen group or alkoxy radical.
Claim 2
Independent Claim
127 words
A method for bonding a silicone layer to the surface of a microstructural bonding tool for holding a bonding wire against a surface to which the wire is to be bonded during application of energy thereto, which tool comprises an elongate tool body having a wire guide opening and a bonding surface at the end thereof, the method comprising treating the surface of the hard metal substrate to form pendant groups of the general formula, --OM wherein M is hydrogen or a cation having a valence of one, and contacting the treated surface with a silane of the general formula (R) n Si(X) 4-n wherein n varies from 0 to 3, R is an aliphatic or aromatic group and X is a halogen group or alkoxy radical.
Claim 3
Dependent Claim
23 words
A method as in claim 1 in which the --OM groups are formed by electrolytically reacting the hard metal surface with a base.
Claim 4
Dependent Claim
25 words
A method as in claim 2 in which the base-reacted surface is washed with an acid to form hydroxyl groups before contact with the silane.
Claim 5
Dependent Claim
26 words
A method as in claim 1 in which the silane is selected from the group consisting of dimethyl dichlorosilane, dimethyl diethoxysilane, trimethyl chlorosilane, and trimethyl ethoxysilane.
Claim 6
Dependent Claim
11 words
A microstructural bonding tool formed by the method of claim 1.
Claim 7
Dependent Claim
72 words
In a microstructural bonding tool for holding a bonding wire against a surface to which the wire is to be bonded during application of energy thereto, said tool including an elongate tool body having wire guide means and a metal bonding surface at the end thereof, the improvement comprising a silicone layer bonded to said metal bonding surface through metal-oxygen-silicon bonds, said silicone layer being characterized by gall resistance and electrical insulation.
Claim 8
Dependent Claim
72 words
In a microstructural bonding tool for holding a bonding wire against a surface to which the wire is to be bonded during application of energy thereto, said tool including an elongate tool body having wire guide means and a metal bonding surface at the end thereof, the improvement comprising a silicone layer bonded to said metal bonding surface through metal-oxygen-silicon bonds, said silicone layer being characterized by gall resistance and electrical insulation.
Claim 9
Dependent Claim
36 words
A bonding tool as in claim 6 in which the bonding surface is formed of a metal selected from the group consisting of osmium, ruthenium, tungsten carbide, titanium carbide, tool steel and alloys of the same.
References Cited (Backward Citations)
US3627192A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |