Patent FR1256266A successfully refreshed from Google Patents.
Patent FR1241564A successfully refreshed from Google Patents.
Patent US2351205A successfully refreshed from Google Patents.
Patent US3471754A successfully refreshed from Google Patents.
US3471754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isolation structure for integrated circuits
Assignee: Sony Corp
•
Filing: 1967-03-22
•
Granted: 1969-10-07
•
Expires: 1987-03-22
Abstract
No abstract record available.
Inventors
- 👤 Kinji Hoshi
- 👤 Kinji Wakamiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:45
CPC Classifications
H; H10; H10W; H10W70/00; H10W70/60; H10W70/67; H10W70/68; H10D; H10D84/00; H10D84/60; H10D84/611; H10D84/613; H10W10/00; H10W10/01; H10W10/011; H10W10/019; H10W10/10; H10W70/099; H10W70/611; H10W70/614; H10W90/00; H10W90/10; Y; Y10; Y10S; Y10S148/00; Y10S148/026; Y10S148/05; Y10S148/085; Y10S148/148; Y10S148/15; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/4913; Y10T29/49139
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |