Patent US4393502A successfully refreshed from Google Patents.
Patent US3123592A successfully refreshed from Google Patents.
Patent US3517281A successfully refreshed from Google Patents.
US3517281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light emitting silicon carbide semiconductor junction devices
Assignee: Tyco International Ltd
•
Filing: 1967-01-25
•
Granted: 1970-06-23
•
Expires: 1987-01-25
Abstract
No abstract record available.
Inventors
- 👤 Abraham I Mlavsky
- 👤 Leonard B Griffiths
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:57
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/81; H10H20/822; H10H20/826; H10P; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/107; Y10S148/148; Y10S438/00; Y10S438/914; Y10S438/918; Y10S438/931
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3047439A
Cited
US3396059A
Cited
US3377210A
Cited
US3371255A
Cited
US3401107A
Cited
US3397333A
Cited
US3395445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |