Patent US5217154A successfully refreshed from Google Patents.
US5217154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor bonding tool
Assignee: Small Precision Tools Inc
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Filing: 1990-05-22
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Granted: 1993-06-08
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Expires: 2010-05-22
Abstract
Abstract The disclosure relates to a bonding tool tip bonding electronic interconnects having a shank portion formed of a relatively hard, stiff material having a high modulus of elasticity and a foot portion formed of polycrystalline diamond bonded to the shank portion. The shank portion is preferably formed of tungsten carbide. The foot portion can have an aperture therethrough for feeding of wire to be welded.
Inventors
- 👤 Richard Elwood
- 👤 Kenneth Ellett
- 👤 Hugo Stebler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:55
CPC Classifications
B; B23; B23K; B23K3/00; B23K3/02; B23K3/025; H; H10; H10W; H10W72/00; H10W72/071; H10W72/0711; H10W72/07141; H10W72/075; H10W72/07531; H10W72/07532; H10W72/07533; H10W72/50; H10W72/531; H10W72/533; H10W72/534; H10W72/551; H10W72/552; H10W72/5522; H10W72/5524; H10W72/5525
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
45 words
A bonding tool tip for bonding electronic interconnects to the pads of semiconductor devices, comprising: (a) a shank portion formed of a relatively hard, stiff material having a high modulus of elasticity; and (b) a polycrystalline diamond tapered foot portion bonded to said shank portion.
Claim 2
Dependent Claim
45 words
A bonding tool tip for bonding electronic interconnects to the pads of semiconductor devices, comprising: (a) a shank portion formed of a relatively hard, stiff material having a high modulus of elasticity; and (b) a polycrystalline diamond tapered foot portion bonded to said shank portion.
Claim 3
Dependent Claim
33 words
A bonding tool tip as set forth in claim 1 wherein said shank portion is formed of a material taken from the class consisting of tungsten carbide, titanium carbide and tool steel alloys.
Claim 4
Dependent Claim
31 words
A bonding tool as set forth in claim 1, further including an aperture, both ends of said aperture extending to external surfaces of said foot portion for feeding of wire therethrough.
Claim 5
Dependent Claim
31 words
A bonding tool as set forth in claim 2, further including an aperture, both ends of said aperture extending to external surfaces of said foot portion for feeding of wire therethrough.
Claim 6
Dependent Claim
19 words
A bonding tool as set forth in claim 1 wherein said foot portion includes at least one groove therein.
Claim 7
Dependent Claim
19 words
A bonding tool as set forth in claim 2 wherein said foot portion includes at least one groove therein.
Claim 8
Dependent Claim
19 words
A bonding tool as set forth in claim 3 wherein said foot portion includes at least one groove therein.
Claim 9
Dependent Claim
19 words
A bonding tool as set forth in claim 4 wherein said foot portion includes at least one groove therein.
Claim 10
Dependent Claim
19 words
A bonding tool as set forth in claim 1 wherein said foot portion includes at least one protrusion thereon.
Claim 11
Dependent Claim
19 words
A bonding tool as set forth in claim 2 wherein said foot portion includes at least one protrusion thereon.
Claim 12
Dependent Claim
19 words
A bonding tool as set forth in claim 3 wherein said foot portion includes at least one protrusion thereon.
Claim 13
Dependent Claim
19 words
A bonding tool as set forth in claim 4 wherein said foot portion includes at least one protrusion thereon.
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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) | 1996-06-07 | 1996-12-07 | 1997-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-07 | 2000-12-07 | 2001-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-07 | 2004-12-07 | 2005-06-08 | $7700.00 | Window Closed / Lapsed |