Patent US3076722A successfully refreshed from Google Patents.
US3076722A
Expired / Lapsed
US
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Electrostatic printing
Assignee: RCA Corp
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Filing: 1959-04-29
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Granted: 1963-02-05
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Expires: 1979-04-29
Abstract
No abstract record available.
Inventors
- 👤 Harold G Greig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:02
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/12; G03G9/125; G03G9/13; G03G9/131
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
89 words
IN A METHOD OF DEVELOPING AN ELECTROSTATIC IMAGE ON AN INSULATNG SURFACE SAID IMAGE COMPRISING A PATTERN OF NEGATIVE ELECTROSTATIC CHARGES, THE IMPROVEMENT COMPRISING APPLYING TO SAID SURFACE A DEVELOPER COMPOSITIONS CONSISTING ESSENTIALLY OF PIGMENT ELECTROSCOPIC DEVELOPER PARTICLES DISPERSED AS A PHASE IN TRICHLOROTRIFLUOROETHANE AND A POLYISOBUTYLMETHACTYLTE BINDER MATERIAL DISSOLVED IN SAID TRICHLOROTRIFULOROETHANE, SAID BINDER MATERIAL COMPRISING ABOUT 0.1 TO 5.0% BY WEIGHT OF SAID COMPOSITION, DEPOSITING SAID DEVELOPER PARTICLES ON SAID PATTERN OF NEGATIVE ELECTROSTATIC CHARGES, AND BINDING SAID DEVELOPER LATE BY EVAPORATING SAID TRICHLOROTRIFLUOROETHANE FROM SAID SURFACE.
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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) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |