US3506502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a glass passivated mesa semiconductor device
Assignee: Sony Corp
•
Filing: 1967-06-05
•
Granted: 1970-04-14
•
Expires: 1987-06-05
Abstract
No abstract record available.
Inventors
- 👤 Keiichi Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:28
CPC Classifications
H; H10; H10W; H10W74/00; H10W74/10; H10W74/131; H10D; H10D99/00; H10W74/141; H10W74/40; H10W74/43; Y; Y10; Y10S; Y10S148/00; Y10S148/051; Y10S438/00; Y10S438/911
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3241010A
Cited
US3447237A
Cited
US3410736A
Cited
US3447958A
Cited
US3442011A
Cited
US3237272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-13 | 1973-10-13 | 1974-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-13 | 1977-10-13 | 1978-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-13 | 1981-10-13 | 1982-04-14 | $7700.00 | Window Closed / Lapsed |