US3239377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device
Assignee: 3M Co
•
Filing: 1962-04-19
•
Granted: 1966-03-08
•
Expires: 1982-04-19
Abstract
No abstract record available.
Inventors
- 👤 Robert W Fritts
- 👤 James D Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:56
CPC Classifications
H; H01; H01B; H01B1/00; H01C; H01C7/00; H01C7/02; H10; H10N; H10N10/00; H10N10/80; H10N10/85; H10N10/851; H10N10/854; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
A SEMICONDUCTOR DEVICE COMPRISING A SILICATE BASED ELECTRICALLY INSULATING CERAMIC SUPPORTING MEMBER, AND A LEAD BASED SEMICONDUCTOR ELEMENT BONDED BY A LEADSILICATE COMPLEX DIRECTLY TO SAID SUPPORTING MEMBER.
Claim 2
Dependent Claim
28 words
A SEMICONDUCTOR DEVICE COMPRISING A SILICATE BASED ELECTRICALLY INSULATING CERAMIC SUPPORTING MEMBER, AND A LEAD BASED SEMICONDUCTOR ELEMENT BONDED BY A LEADSILICATE COMPLEX DIRECTLY TO SAID SUPPORTING MEMBER.
References Cited (Backward Citations)
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US2811569A
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Cited
US3088988A
Cited
US3006978A
Cited
US3017445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |