US4355719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical shock and impact resistant ceramic semiconductor package and method of making the same
Assignee: National Semiconductor Corp
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Filing: 1980-08-18
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Granted: 1982-10-26
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Expires: 2000-08-18
Abstract
Abstract A mechanical shock and impact resistant ceramic semiconductor package is formed by applying a resilient, non-conductive, non-absorbent, heat-resistant material onto the surfaces of said package. In a dual in-line ceramic package a silicone polymer is discretely applied onto at least one end of the longitudinally opposite end edge surfaces. This renders the package mechanical shock and impact resistant.
Inventors
- 👤 Sally K. Hinds
- 👤 Peter M. Weiler
- 👤 Robert R. Hewitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:02
CPC Classifications
H; H10; H10W; H10W42/00; H10W42/121; B; B65; B65D; B65D81/00; H05; H05K; H05K13/00; H05K13/0084
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
72 words
In a ceramic package, adapted to hermetically house an electronic device, which is to be handled in plural numbers pursuant to testing and using wherein such handling may act to impact the devices and thereby chip said ceramic, the improvement comprising: coating means comprising a non-conductive, heat-resistant, non-absorbent, resilient material located on said package to render it resistant to mechanical shock and impact, whereby the incidence of chipping is reduced or eliminated.
Claim 2
Dependent Claim
72 words
In a ceramic package, adapted to hermetically house an electronic device, which is to be handled in plural numbers pursuant to testing and using wherein such handling may act to impact the devices and thereby chip said ceramic, the improvement comprising: coating means comprising a non-conductive, heat-resistant, non-absorbent, resilient material located on said package to render it resistant to mechanical shock and impact, whereby the incidence of chipping is reduced or eliminated.
Claim 3
Dependent Claim
30 words
The device of claim 1 wherein said means comprises: a non-conductive, heat-resistant, non-absorbent, resilient material applied onto at least one of the longitudinal opposite end edge surface of said package.
Claim 4
Dependent Claim
20 words
The device of claim 1 wherein said coating means comprise: a silicone polymer applied onto a surface of said package.
Claim 5
Dependent Claim
31 words
The device of claim 3 wherein said package is a dual-in-line package and said polymer is applied onto at least one of the longitudinally opposite end edge surfaces of said package.
Claim 6
Dependent Claim
25 words
The device of claim 4 wherein said polymer is discretely applied onto at least one of said longitudinally opposite end edge surfaces of said package.
Claim 7
Dependent Claim
79 words
An improved method of manufacturing an electronic device in a hermetically sealed ceramic package, wherein said package is to be handled in plural numbers pursuant to testing and using and wherein such handling may act to impact the devices and thereby chip said ceramic, said improved method comprising: applying a coating comprising a non-conductive, heat-resistant, non-absorbent, resilient material to said package to render it resistant to mechanical shock and impact whereby the incidence of chipping is reduced or eliminated.
Claim 8
Dependent Claim
79 words
An improved method of manufacturing an electronic device in a hermetically sealed ceramic package, wherein said package is to be handled in plural numbers pursuant to testing and using and wherein such handling may act to impact the devices and thereby chip said ceramic, said improved method comprising: applying a coating comprising a non-conductive, heat-resistant, non-absorbent, resilient material to said package to render it resistant to mechanical shock and impact whereby the incidence of chipping is reduced or eliminated.
Claim 9
Dependent Claim
22 words
The method of claim 6 wherein said improvement comprises: applying a silicone polymer onto the longitudinal end edge surface of said package.
Claim 10
Dependent Claim
31 words
The method of claim 7 wherein said package is a dual-in-line package and said polymer is applied onto at least one of the longitudinal end edge surfaces of said dual-in-line package.
Claim 11
Dependent Claim
25 words
The method of claim 8 wherein said polymer is discretely applied onto at least one of said longitudinal end edge surfaces of said dual-in-line package.
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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) | 1985-10-25 | 1986-04-26 | 1986-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-25 | 1990-04-26 | 1990-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-25 | 1994-04-26 | 1994-10-26 | $7700.00 | Window Closed / Lapsed |