Patent US4488130A successfully refreshed from Google Patents.
Patent US1624727A successfully refreshed from Google Patents.
US3791019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of soldering a conductor to a semiconductor
Assignee: Robert Bosch GmbH
•
Filing: 1972-04-28
•
Granted: 1974-02-12
•
Expires: 1992-04-28
Abstract
Abstract A semi-conductor element is to be connected with one or more conductor members by soft-soldering. The conductor member is formed with a nose-like projection having circumferential surface portions and a free end face which is planar and with which the circumferential surface portions define arcuate angles. Liquid solder is flow-deposited on the surface portions and on the end face to form a solder-coating on them, particularly on the surface portions, and thereupon the coated endface is abutted against the semi-conductor element and soldered thereto.
Inventors
- 👤 G Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:42
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/08; H; H10; H10W; H10W72/00; H10W72/30; B23K1/085; H10W74/00; H10W74/10; H10W74/111; H10W74/114; H10W72/071; H10W72/073; H10W72/07331; H10W72/07336; H10W72/07351; H10W72/07354; H10W72/341; H10W72/347; H10W72/351; H10W72/352; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49169
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
137 words
A method of connecting a conductor member with a semiconductor element provided with a face having a first surface area, comprising the steps of forming said conductor member with a circumferential surface, a free planar contact face spaced from said circumferential surface and having a second surface area substantially corresponding to said first surface area, and a recessed portion intermediate to, and forming obtuse angles with said circumferential surface and said contact face; flowdepositing liquid solder on said contact face as well as in said recessed portion to form a solder-coating on the same; abutting the thus coated contact face against said semi-conductor element so that said first and second surface areas face one another; and effecting adherence of said semi-conductor element to said solder so as to connect said element and said member with one another.
Claim 2
Independent Claim
137 words
A method of connecting a conductor member with a semiconductor element provided with a face having a first surface area, comprising the steps of forming said conductor member with a circumferential surface, a free planar contact face spaced from said circumferential surface and having a second surface area substantially corresponding to said first surface area, and a recessed portion intermediate to, and forming obtuse angles with said circumferential surface and said contact face; flowdepositing liquid solder on said contact face as well as in said recessed portion to form a solder-coating on the same; abutting the thus coated contact face against said semi-conductor element so that said first and second surface areas face one another; and effecting adherence of said semi-conductor element to said solder so as to connect said element and said member with one another.
Claim 3
Dependent Claim
45 words
A method as defined in claim 1, wherein the step of flow-depositing said solder comprises exposing said conductor member to a flowing quantity of liquid solder so that the same flows about said conductor member and adheres predominantly to said contact face and recessed portion.
References Cited (Backward Citations)
US3202489A
Cited
US2987597A
Cited
US3209450A
Cited
US3648915A
Cited
US3446912A
Cited
DE1940450A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |