Patent US2375536A successfully refreshed from Google Patents.
US4442967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of providing raised electrical contacts on electronic microcircuits
Assignee: US Philips Corp
•
Filing: 1982-03-01
•
Granted: 1984-04-17
•
Expires: 2002-03-01
Abstract
Abstract A method of providing a raised contact portion on a contact area of an electronic microcircuit in which a ball is formed at one end of a metal wire by means of thermal energy, the ball is pressed against a contact area of the electronic microcircuit and is connected to said contact area. A weakening is created in the wire near the ball and the wire is then severed at the area of the weakening to provide the desired raised contact portion.
Inventors
- 👤 Hermanus A. van de Pas
- 👤 Huibert A. Knobbout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:40
CPC Classifications
H; H10; H10D; H10D64/00; H10D64/01; H10D64/011; H10W; H10W72/00; H10W72/01; H10W72/012; H10W72/01221; H10W72/01225; H10W72/071; H10W72/0711; H10W72/07141; H10W72/075; H10W72/07531; H10W72/07532; H10W72/07533; H10W72/20; H10W72/251; H10W72/252; H10W72/50; H10W72/551; H10W72/552; H10W72/5522; H10W72/5524; H10W72/5525
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
113 words
A method of providing a raised contact portion on a contact area of an electronic microcircuit, which comprises: passing a metal wire through a capillary wire guide; forming a ball at one end of said metal wire by heating said wire; attaching said ball to said contact area by pressing said ball against said contact area with an end of said capillary wire guide; moving said capillary wire guide upwards and laterally with respect to said contact area; lowering said capillary wire guide to form a notch in said metal wire adjacent said ball with the end of said capillary wire guide; and severing said metal wire at the area of said notch.
Claim 2
Independent Claim
113 words
A method of providing a raised contact portion on a contact area of an electronic microcircuit, which comprises: passing a metal wire through a capillary wire guide; forming a ball at one end of said metal wire by heating said wire; attaching said ball to said contact area by pressing said ball against said contact area with an end of said capillary wire guide; moving said capillary wire guide upwards and laterally with respect to said contact area; lowering said capillary wire guide to form a notch in said metal wire adjacent said ball with the end of said capillary wire guide; and severing said metal wire at the area of said notch.
Claim 3
Dependent Claim
39 words
A method as in claim 1, wherein the capillary wire guide is moved upwards a distance of about 2-3 times the thickness of said metal wire and is moved laterally a distance of about 1.5-2 times said wire thickness.
References Cited (Backward Citations)
US3357090A
Cited
GB1056362A
Cited
US3430835A
Cited
US4219143A
Cited
JPS55118643A
Cited
JPS55158642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-17 | 1987-10-17 | 1988-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-17 | 1991-10-17 | 1992-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-17 | 1995-10-17 | 1996-04-17 | $7700.00 | Window Closed / Lapsed |