Patent US4635270A successfully refreshed from Google Patents.
US4635165A
Expired / Lapsed
US
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Printed-circuit construction with EPROM IC chip mounted thereon
Assignee: Oki Electric Industry Co Ltd
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Filing: 1984-11-29
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Granted: 1987-01-06
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Expires: 2004-11-29
Abstract
Abstract A printed-circuit construction having an EPROM IC chip on the surface of an insulating baseboard. The insulating baseboard has on a primary surface a printed circuit pattern and a semiconductor chip support region. The EPROM IC chip is fixed to the semiconductor chip support region of the insulating baseboard. Thin metal wires connect electrodes of the EPROM IC chip to the printed circuit pattern. A cap is fixed to the primary surface of the insulating baseboard in covering relation to a surface of the EPROM IC chip and the thin metal wires. The cap is made of a material capable of transmitting ultraviolet radiation therethrough.
Inventors
- 👤 Hiroshi Okuaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:10
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/18; G; G11; G11C; G11C16/00; G11C16/02; G11C16/06; G11C16/10; G11C16/18; H10; H10W; H10W72/00; H10W72/50; H10W72/551; H10W72/552; H10W72/5522; H10W90/00; H10W90/701; H10W90/751; H10W90/754
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
133 words
A printed-circuit construction comprising: (a) an insulating glass epoxy resin baseboard having heat-resistant characteristics and having on a primary surface thereof a conductive chip support region and a plurality of conductive wiring patterns; (b) an EPROM IC chip having a plurality of pad electrodes on the surface thereof and fixed on said chip support region of said insulating baseboard with an electrically conductive adhesive; (c) a plurality of thin metal wires each which connects each pad electrode of said EPROM IC chip with each of said electrically conductive wiring patterns; and (d) a hollow cap made of a material capable of transmitting ultraviolet rays therethrough and fixed on said primary surface of said insulating baseboard with a synthetic resin adhesive so as to cover said EPROM IC chip and said thin metal wires.
Claim 2
Dependent Claim
133 words
A printed-circuit construction comprising: (a) an insulating glass epoxy resin baseboard having heat-resistant characteristics and having on a primary surface thereof a conductive chip support region and a plurality of conductive wiring patterns; (b) an EPROM IC chip having a plurality of pad electrodes on the surface thereof and fixed on said chip support region of said insulating baseboard with an electrically conductive adhesive; (c) a plurality of thin metal wires each which connects each pad electrode of said EPROM IC chip with each of said electrically conductive wiring patterns; and (d) a hollow cap made of a material capable of transmitting ultraviolet rays therethrough and fixed on said primary surface of said insulating baseboard with a synthetic resin adhesive so as to cover said EPROM IC chip and said thin metal wires.
Claim 3
Dependent Claim
26 words
A construction according to claim 1, wherein said cap is made of a material selected from the group consisting of ultraviolet transmitting glass, quartz and alumina.
Claim 4
Dependent Claim
16 words
A construction according to claim 1, wherein said cap is made of a synthetic resin material.
References Cited (Backward Citations)
US3404215A
Cited
US3660819A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-05 | 1990-07-07 | 1991-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-05 | 1994-07-07 | 1995-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-05 | 1998-07-07 | 1999-01-06 | $7700.00 | Window Closed / Lapsed |