US4725519B1
Expired / Lapsed
US
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Dual layer electrophotographic photoreceptor comprises titanium phthalocyanine charge transport materials
Assignee: Mitsubishi Chemical Corp
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Filing: 1985-10-01
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Granted: 1997-03-11
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Expires: 2005-10-01
Abstract
No abstract record available.
Inventors
- 👤 Tetsumi Suzuki
- 👤 Tetsuo Murayama
- 👤 Hitoshi Ono
- 👤 Shigenori Otsuka
- 👤 Mamoru Nozomi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:37
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0025; C09B67/0026; C09B67/0001; C09B67/0014; C09B67/0016; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0696
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) | 2000-03-10 | 2000-09-09 | 2001-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-10 | 2004-09-09 | 2005-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-10 | 2008-09-09 | 2009-03-11 | $7700.00 | Window Closed / Lapsed |