US3150976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic printing
Assignee: RCA Corp
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Filing: 1962-06-20
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Granted: 1964-09-29
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Expires: 1982-06-20
Abstract
No abstract record available.
Inventors
- 👤 Johnson Sigurd William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:59
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/12; G03G9/13; G03G9/132; G03G9/122
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
A METHOD OF ELECTROSTATIC PRINTINGD COMPRISING THE STEPS OF ELECTROPHOTOGRAPHICALLY PRODUCING IN SUCCESSION A PLURALITY OF ELECTROSTATIC IMAGES ON A PHOTOCONDUCTIVE SURFACE, DEVELOPING EACH ELECTROSTATIC IMAGE SO PRODUCED WITH A SEPARATE DEVELOPER COMPOSITION EACH SEPARATE COMPOSITION COMPRISING DIFFERENT COLORED DEVELOPER PARTICLES DISPERSED IN A CARRIER SOLUTION CONSISTING ESSENTIALLY OF ABOUT 48 TO 58% BY VOLUME TRICHLOROTRIFLUOROETHANE AND ABOUT 52 TO 42% BY VOLUME OF DIMETHYL POLYSILOXANE HAVING A VISCOSITY OF FROM ABOUT 0.6 TO ABOUT 3.0 CENTISTOKES, AND AFTER DEVELOPING ALL OF SAID ELECTROSTATIC IMAGES, FIXING SAID DEVELOPER PARTICLES TO SAID PHOTOCONDUCTIVE SURFACE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-29 | 1968-03-30 | 1968-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-29 | 1972-03-30 | 1972-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-29 | 1976-03-30 | 1976-09-29 | $7700.00 | Window Closed / Lapsed |