Patent US3343956A successfully refreshed from Google Patents.
US3343956A
Expired / Lapsed
US
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Electrostatic printing process wherein development is achieved by sequenctial application of carrier liquid and developer particles
Assignee: RCA Corp
•
Filing: 1961-09-29
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Granted: 1967-09-26
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Expires: 1981-09-29
Abstract
No abstract record available.
Inventors
- 👤 Paul E Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:02
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/10; G03G15/101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
IN A METHOD OF PRINTING INCLUDING THE STEP OF PRODUCING AN ELETROSTATIC CHARGE IMAGE ON AN INSULATING SURFACE, THE IMPROVEMENT COMPRISING DEVELOPING SAID CHARGE IMAGE INTO A VISIBLE IMAGE BY FIRST APPLYING A THIN FILM OF INSULATING CARRIER LIQUID TO SAID SURFACE AND THEREAFTER CONTACTING THEREACROSS ABSORBENT MATERIAL HAVING DISPERSED THEREIN A QUANTITY OF DRY ELECTROSCOPIC DEVELOPER PARTICLES.
Claim 2
Dependent Claim
58 words
IN A METHOD OF PRINTING INCLUDING THE STEP OF PRODUCING AN ELETROSTATIC CHARGE IMAGE ON AN INSULATING SURFACE, THE IMPROVEMENT COMPRISING DEVELOPING SAID CHARGE IMAGE INTO A VISIBLE IMAGE BY FIRST APPLYING A THIN FILM OF INSULATING CARRIER LIQUID TO SAID SURFACE AND THEREAFTER CONTACTING THEREACROSS ABSORBENT MATERIAL HAVING DISPERSED THEREIN A QUANTITY OF DRY ELECTROSCOPIC DEVELOPER PARTICLES.
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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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |