US4937480B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
US4937480B1 - - Google Patents
Assignee: Hitachi Ltd
•
Filing: 1989-06-27
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Granted: 1992-08-10
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Expires: 2009-06-27
Abstract
No abstract record available.
Inventors
- 👤 Higuchi Hisayuki
- 👤 Suzuki Makoto
- 👤 Homma Noriyuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:08
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/21; G11C11/34; G11C11/40; G11C8/00; G11C8/10; G11C11/41; G11C11/413; G11C11/417; G11C11/418; G11C7/00; G11C7/12; G11C8/06
Claims Analysis
Total Claims: 0
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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) | 1995-08-10 | 1996-02-09 | 1996-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-10 | 2000-02-09 | 2000-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-10 | 2004-02-09 | 2004-08-10 | $7700.00 | Window Closed / Lapsed |