Patent US3170813A successfully refreshed from Google Patents.
US3170813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for encapsulating semiconductors
Assignee: Westinghouse Electric Corp
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Filing: 1961-05-19
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Granted: 1965-02-23
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Expires: 1981-05-19
Abstract
No abstract record available.
Inventors
- 👤 Charles S Duncan
- 👤 Herbert L Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:45
CPC Classifications
H; H10; H10N; H10N10/00; H10N10/80; H10N10/81; H10N10/817; C; C23; C23C; C23C26/00; C23C26/02; C23C4/00; C23C4/04; C23C4/10; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN A METHOD OF ENCAPSULATING A SEMICONDUCTOR MEMBER TO EFFECT A HERMETIC SEAL THEREBY, THE STEPS COMPRISING APPLYING A COATING OF A FIRST REFRACTORY MATERIAL BY PLASMA JET SPRAY TO THE EXPOSED SURFACES OF THE MEMBER, APPLYING A SECOND COATING OF A SECOND REFRACTORY INSULATING MATERIAL ON THE MEMBER, THE MELTING POINT OF SAID SECOND MATERIAL BEING LESS THAN THE MELTING POINT OF THE FIRST COATING AND HEATING THE MEMBER TO A TEMPERATURE ABOVE THE MELTING POINT OF SAID SECOND COATING MATERIAL SO THAT THE SECOND COATING FLOWS AND ADHERES TO THE FIRST COATING AND CLOSES ANY VOIDS THEREIN.
Claim 2
Dependent Claim
99 words
IN A METHOD OF ENCAPSULATING A SEMICONDUCTOR MEMBER TO EFFECT A HERMETIC SEAL THEREBY, THE STEPS COMPRISING APPLYING A COATING OF A FIRST REFRACTORY MATERIAL BY PLASMA JET SPRAY TO THE EXPOSED SURFACES OF THE MEMBER, APPLYING A SECOND COATING OF A SECOND REFRACTORY INSULATING MATERIAL ON THE MEMBER, THE MELTING POINT OF SAID SECOND MATERIAL BEING LESS THAN THE MELTING POINT OF THE FIRST COATING AND HEATING THE MEMBER TO A TEMPERATURE ABOVE THE MELTING POINT OF SAID SECOND COATING MATERIAL SO THAT THE SECOND COATING FLOWS AND ADHERES TO THE FIRST COATING AND CLOSES ANY VOIDS THEREIN.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |