Patent US3409977A successfully refreshed from Google Patents.
US3409977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot gas thermo-compression bonding
Assignee: Texas Instruments Inc
•
Filing: 1963-10-28
•
Granted: 1968-11-12
•
Expires: 1983-10-28
Abstract
No abstract record available.
Inventors
- 👤 Johnson Clair Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:57
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/012; B23K20/00; B23K20/002; B23K20/004; B23K20/005; B23K20/02; B23K20/023; B23K20/025; B23K20/22; B23K20/233; B23K20/2333; H; H10; H10W; H10W72/00; H10W72/071; H10W72/0711; H10W72/07141; H10W72/075; H10W72/07531; H10W72/07532; H10W72/50; H10W72/551; H10W72/552; H10W72/5522; H10W72/5524; Y; Y10; Y10S; Y10S228/00; Y10S228/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE METHOD OF BONDING LEAD WIRES TO A CONDUCTIVE STRUCTURE ON A SEMICONDUCTOR DEVICE WHICH COMPRISES: (A) MOVING THE FREE END OF A LEAD WIRE TO POSITION THE SAME OVER SAID CONDUCTIVE STRUCTURE, (B) MAINTAINING A FORCE SUFFICIENT TO CAUSE BONDING ON SAID LEAD WIRE TO FORCE SAID WIRE INTO CONTACT WITH SAID STRUCTURE, AND (C) DIRECTING A JET OF HEATED GAS ONTO SAID WIRE AND SAID STRUCTURE AT THE POINT OF CONTACT TO HEAT THEM TO A BONDING TEMPERATURE, WHEREBY A BOND IS FORMED THROUGH THE APPLICATION OF SAID HEATED GAS AND PRESSURE FROM SAID FORCE.
Claim 2
Independent Claim
97 words
THE METHOD OF BONDING LEAD WIRES TO A CONDUCTIVE STRUCTURE ON A SEMICONDUCTOR DEVICE WHICH COMPRISES: (A) MOVING THE FREE END OF A LEAD WIRE TO POSITION THE SAME OVER SAID CONDUCTIVE STRUCTURE, (B) MAINTAINING A FORCE SUFFICIENT TO CAUSE BONDING ON SAID LEAD WIRE TO FORCE SAID WIRE INTO CONTACT WITH SAID STRUCTURE, AND (C) DIRECTING A JET OF HEATED GAS ONTO SAID WIRE AND SAID STRUCTURE AT THE POINT OF CONTACT TO HEAT THEM TO A BONDING TEMPERATURE, WHEREBY A BOND IS FORMED THROUGH THE APPLICATION OF SAID HEATED GAS AND PRESSURE FROM SAID FORCE.
References Cited (Backward Citations)
US2220545A
Cited
US3071852A
Cited
US3061923A
Cited
US3091849A
Cited
US3149510A
Cited
US3211353A
Cited
US3136032A
Cited
US3224072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |