US3211353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermocompression bonding chisel
Assignee: Raytheon Co
•
Filing: 1963-09-16
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Granted: 1965-10-12
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Expires: 1983-09-16
Abstract
No abstract record available.
Inventors
- 👤 Richard J Belardi
- 👤 Moles Leslie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:31
CPC Classifications
H; H01; H01R; H01R43/00; H01R43/02; H10; H10P; H10P95/00; H10W; H10W72/00; H10W72/071; H10W72/0711; H10W72/07141; H10W72/075; H10W72/07531; H10W72/07532; H10W72/50; H10W72/531; H10W72/5363; H10W72/551; H10W72/552; H10W72/5522; H10W72/59; Y; Y10; Y10S; Y10S228/00; Y10S228/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A BONDING CHISEL FOR THERMOCOMPRESSION BONDING MALLEABLE METAL TO A SEMICONDUCTOR CRYSTAL, COMPRISING: AN ELONGATED SAPPHIRE CRYSTAL HAVING A WEDGE SHAPE AT ONE END THEREOF, SAID WEDGE END HAVING A FLAT PORTION SUBSTANTIALLY PERPENDICULAR TO THE LENGTH OF THE CHISEL, AND HAVING ONE EDGE OF SAID FLAT PORTION SUBSTANTIALLY SHARPER THAN THE OPPOSITE EDGE THEREOF WHEREBY TO PROMOTE PREFERENTIAL BRAKING OF A BONDED LEAD WIRE, AFTER BONDING, AT THE SHARPER CHISEL EDGE IMPRESSION.
Claim 2
Dependent Claim
73 words
A BONDING CHISEL FOR THERMOCOMPRESSION BONDING MALLEABLE METAL TO A SEMICONDUCTOR CRYSTAL, COMPRISING: AN ELONGATED SAPPHIRE CRYSTAL HAVING A WEDGE SHAPE AT ONE END THEREOF, SAID WEDGE END HAVING A FLAT PORTION SUBSTANTIALLY PERPENDICULAR TO THE LENGTH OF THE CHISEL, AND HAVING ONE EDGE OF SAID FLAT PORTION SUBSTANTIALLY SHARPER THAN THE OPPOSITE EDGE THEREOF WHEREBY TO PROMOTE PREFERENTIAL BRAKING OF A BONDED LEAD WIRE, AFTER BONDING, AT THE SHARPER CHISEL EDGE IMPRESSION.
References Cited (Backward Citations)
US2530284A
Cited
US2639634A
Cited
US2815689A
Cited
US3006067A
Cited
US3091849A
Cited
US3149510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |