US4836868B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
US4836868B1 - - Google Patents
Assignee: TDK Corp
•
Filing: 1987-04-14
•
Granted: 1992-05-12
•
Expires: 2007-04-14
Abstract
No abstract record available.
Inventors
- 👤 Yajima Kohichi
- 👤 Kohmoto Osamu
- 👤 Yoneyama Tetsuhito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:17
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/032; H01F1/04; H01F1/047; H01F1/053; H01F1/055; H01F1/057; H01F1/0571; H01F1/0575; H01F1/0578; H05; H05K; H05K2201/00; H05K2201/10; H05K2201/10613; H05K2201/10954; H05K2201/10977
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-05-12 | 1995-11-11 | 1996-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-12 | 1999-11-11 | 2000-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-12 | 2003-11-11 | 2004-05-12 | $7700.00 | Window Closed / Lapsed |