US3228326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spacer contact for electrostatic printing
Assignee: Electrostatic Printing Corp of America
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Filing: 1963-03-18
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Granted: 1966-01-11
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Expires: 1983-03-18
Abstract
No abstract record available.
Inventors
- 👤 Clyde O Childress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:21
CPC Classifications
B; B41; B41M; B41M1/00; B41M1/12; B41M1/125; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
141 words
IN AN ELECTROSTATIC PRINTING SYSTEM FOR PRINTING ON A CONDUCTIVE OBJECT THE COMBINATION OF A CONDUCTIVE SCREEN HAVING ALL OF ITS SURFACE MASKED EXCEPT FOR AN APERTURED REGION THEREOF HAVING THE SHAPE OF A DESIRED IMAGE, AN INSULATING SHEET ATTACHED TO ONE SIDE OF SAID CONDUCTIVE SCREEN AND HAVING AN OPENING THERETHROUGH EXPOSING THE APERTURED REGION OF SAID CONDUCTIVE SCREEN, CONDUTIVE MATERIAL ON THE SIDE OF SAID INSULATING SHEET WHICH IS NOT ATTACHED TO SAID CONDUCTIVE SCREEN, A CONDUCTIVE OBJECT POSITIONED IN CONTACT WITH SAID CONDUCTIVE MATERIAL AT SAID OPENING THROUGH SAID INSULATING SHEET, A SOURCE OF ELECTRIC POTENTIAL, AND MEANS FOR APPLYING AN ELECTRIC POTENTIAL FROM SAID SOURCE BETWEEN SAID CONDUCTIVE SCREEN AND SAID CONDUCTIVE MATERIAL FOR ESTABLISHING AN ELECTRIC FIELD BETWEEN SAID CONDUCTIVE SCREEN AND SAID CONDUCTIVE OBJECT WHEN SAID CONDUCTIVE OBJECT IS IN CONTACT WITH SAID CONDUCTIVE MATERIAL.
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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |