US3598648A
Expired / Lapsed
US
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Materials in electrophotographic process
Assignee: Panasonic Holdings Corp
•
Filing: 1969-01-28
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Granted: 1971-08-10
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Expires: 1989-01-28
Abstract
Abstract A MAGNETIC BRUSH COMPRISING A PERMANENT MAGNET AND A MASS OF IRON POWDER COATED WITH FLUOROWAX WHICH IS USEFUL IN ELECTROPHOTOGRPAHIC PROCESSES.
Inventors
- 👤 Yoshiki Hayashi
- 👤 Hikofumi Oido
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:34
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/14; G03G5/142; G03G13/00; G03G13/06; G03G13/08; G03G13/09; G03G5/10; G03G5/104; G03G5/147; G03G5/14708; G03G5/14713; G03G5/14717; G03G5/14721; G03G5/14726; G03G5/1473; G03G5/14747; G03G5/1476; G03G9/00; G03G9/08; G03G9/10; G03G9/107; G03G9/1075; G03G9/113; G03G9/1132; G03G9/1133; G03G9/1134; G03G9/1135; G03G9/1136; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |