Patent US4568149C1 successfully refreshed from Google Patents.
US4568149C1
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US
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Liquid crystal display panel with opaque mask over gate or signal line
Assignee: Canon Inc
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Filing: 1984-01-19
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Granted: 2002-04-09
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Expires: 2004-01-19
Abstract
No abstract record available.
Inventors
- 👤 Masao Sugata
- 👤 Yuko Miyajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:08
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; G02F1/1368; G02F1/1333; G02F1/1339; G02F1/13394; G02F1/136209; G02F1/13392
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) | 2005-04-08 | 2005-10-08 | 2006-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-04-08 | 2009-10-08 | 2010-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-04-08 | 2013-10-08 | 2014-04-09 | $7700.00 | Window Closed / Lapsed |