US3597665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device having large metal contact mass
Assignee: Raytheon Co
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Filing: 1967-08-14
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Granted: 1971-08-03
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Expires: 1987-08-14
Abstract
Abstract A semiconductor device having a relatively large, lowpenetration metal contact mass extending through a passivating layer on a planar surface for assembly or lead attachment. The contact may be formed by silver metal bonded by gold to a silicon device in the plane of the passivating layer with additional metal mass bonded to the first metal mass.
Inventors
- 👤 John G Quetsch Jr
- 👤 Frank J Saia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:48
CPC Classifications
H; H10; H10W; H10W20/00; H10W20/40; H10D; H10D99/00; H10P; H10P14/00; H10P14/40; H10P14/46; H10W72/00; H10W74/00; H10W74/40; H10W74/43; H10W76/00; H10W76/10; H10W76/12; H10W76/13; H10W76/138; H10W76/161; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/929; Y10S428/9335; Y10S428/934; Y10S428/935; Y10S428/936; Y10S428/941; Y10S438/00; Y10S438/98; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12528; Y10T428/12535; Y10T428/12597; Y10T428/12639; Y10T428/12646; Y10T428/12674; Y10T428/12771; Y10T428/12861; Y10T428/12889; Y10T428/12896
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
67 words
A silicon device comprising: a. a silicon body; b. a silicon oxide mask on the body having an aperture defining a contact area; c. a first silver phase bonded to the body at the contact area by a gold phase; d. a second silver phase bonded to the first silver phase by a gold phase; and e. a glass layer on said body surrounding the contact area.
References Cited (Backward Citations)
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US3242391A
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Cited
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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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |