Patent US3403438A successfully refreshed from Google Patents.
US3403438A
Expired / Lapsed
US
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Process for joining transistor chip to printed circuit
Assignee: Corning Glass Works
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Filing: 1964-12-02
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Granted: 1968-10-01
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Expires: 1984-12-02
Abstract
No abstract record available.
Inventors
- 👤 Howard S Best
- 👤 Robert E Bowser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:49
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/328; H01; H01R; H01R4/00; H10; H10W; H10W72/00; H10W72/20; H05K2201/00; H05K2201/10; H05K2201/10613; H05K2201/10621; H05K2201/10704; H05K2201/10719; H05K2201/10734; H05K2203/00; H05K2203/02; H05K2203/0285; H10W72/071; H10W72/072; H10W72/07231; H10W72/07232; H10W72/07233; H10W72/07236; H10W72/251; H10W72/90; H10W72/941; H10W72/944; H10W72/9445
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
150 words
THE PROCESS OF BONDING A TRANSISTOR CHIP TO A PRINTED CIRCUIT COMPRISING THE STEPS OF PROVIDING A FLAT SUBSTRATE HAVING A PRINTED CIRCUIT FORMED ON ONE SURFACE THEREOF, SAID PRINTED CIRCUIT HAVING AT LEAST ONE CONTACT AREA EMBODIED THEREIN IN A PREDETERMINED DESIRED POSITION, PROVIDING A TRANSISTOR CHIP HAVING AT LEAST ONE CONTACT AREA ON ONE SURFACE THEREOF CORRESPONDING IN NUMBER TO SAID CONTACT AREAS EMBODIED WITHIN SAID PRINTED CIRCUIT AND HAVING AN OPPOSING ARRANGEMENT THERETO, DISPOSING SAID CHIP ADJACENT SAID PRINTED CIRCUIT WITH THE CONTACT AREAS ON SAID CHIP IN REGISTER WITH SAID CONTACT AREAS WITHIN SAID PRINTED CIRCUIT, DISPOSING A SOLID CONDUCTIVE PILLAR INTERMEDIATE EACH PAIR OF OPPOSING CONTACT AREAS, APPLYING A FORCE TO THE UNIT SO FORMED, INTRODUCING VIBRATORY ENERGY TO SAID UNIT AND COMPACTING SAID PILLARS TO SIMULTANEOUSLY WELD CORRESPONDING PRINTED CIRCUIT AND TRANSISTOR CONTACT AREAS TO SAID PILLARS WHEREBY SAID PILLARS FORM A BOND THEREBETWEEN.
References Cited (Backward Citations)
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US3184831A
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US3255511A
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US3271625A
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US3235945A
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US3341649A
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US3330026A
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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) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |