US3561107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor process for joining a transistor chip to a printed circuit
Assignee: Corning Glass Works
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Filing: 1968-03-27
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Granted: 1971-02-09
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Expires: 1988-03-27
Abstract
Abstract A METHOD OF ATTACHING TRANSISTORS TO PRINTED CIRCUITS OR MICROCIRCUITS BY EMPLOYING CONDUCTIVE PILLARS BONDED OR WELDED TO CONTACT AREAS ON EACH. THE PILLARS ARE FIRST ATTACHED TO CONTACT AREAS ON THE TRANSISTOR CHIP.
Inventors
- 👤 Howard S Best
- 👤 Robert E Bowser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:11
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
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References Cited (Backward Citations)
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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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |