US3781207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developer mixture for electrostatic printing
Assignee: Continental Can Co Inc
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Filing: 1968-12-18
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Granted: 1973-12-25
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Expires: 1988-12-18
Abstract
Abstract IN AN ELECTROSTATIC PRINTING PROCESS EMPLOYING A DEVELOPER MIXTURE COMPRISED OF ELECTRICALLY CONDUCTIVE CARRIER PARTICLES AND ELECTROSTATICALLY ATTRACTABLE TONER PARTICLES, THE SPEED OF PRINTING IS INCREASED BY INCORPORATING IN THE DEVELOPER MIXTURE FINELY DIVIDED PARTICLES HAVING A PARTICLE SIZE OF BETWEEN ABOUT .007 AND ABOUT 0.09 MICRON.
Inventors
- 👤 R Tamm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:35
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/10; B; B82; B82Y; B82Y15/00
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) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |