US3245823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic image development apparatus
Assignee: Xerox Corp
•
Filing: 1962-08-01
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Granted: 1966-04-12
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Expires: 1982-08-01
Abstract
No abstract record available.
Inventors
- 👤 Clyde R Mayo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:44
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0806
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
THE METHOD OF FORMING A TRANSPARENCY CORRESPONDING TO INTELLIGENCE TO BE REPRODUCED COMPRISING DEPOSITING A SUBSTANTIALLY UNIFORM LAYER OF PARTICULATE MARKING MATERIAL ON ONE SURFACE OF A TRANSPARENT SUPPORT MEMBER THEREBY FORMING A DONOR SURFACE, FORMING AN ELECTROSTATIC IMAGE PATTERN CORRESPONDING TO INTELLIGENCE TO BE REPRODUCED ON AN ELECTRICALLY INSULATING LAYER, CONTACTING THE LAYER OF PARTICULATE MARKING MATERIAL AND THE SURFACE OF SAID INSULATING LAYER BEARING SAID ELECTROSTATIC IMAGE AND SEPARATING THE LAYER OF PARTICULATE MARKING MATERIAL FROM SAID INSULATING SURFACE WHEREBY SAID MARKING MATERIAL IS ABSTRACTED FROM SAID DONOR SURFACE IN THE AREAS CORRESPONDING TO SAID ELECTROSTATIC IMAGE THEREBY FORMING A TRANSPARENCY CORRESPONDING TO SAID INTELLIGENCE TO BE REPRODUCED.
Claim 2
Independent Claim
110 words
THE METHOD OF FORMING A TRANSPARENCY CORRESPONDING TO INTELLIGENCE TO BE REPRODUCED COMPRISING DEPOSITING A SUBSTANTIALLY UNIFORM LAYER OF PARTICULATE MARKING MATERIAL ON ONE SURFACE OF A TRANSPARENT SUPPORT MEMBER THEREBY FORMING A DONOR SURFACE, FORMING AN ELECTROSTATIC IMAGE PATTERN CORRESPONDING TO INTELLIGENCE TO BE REPRODUCED ON AN ELECTRICALLY INSULATING LAYER, CONTACTING THE LAYER OF PARTICULATE MARKING MATERIAL AND THE SURFACE OF SAID INSULATING LAYER BEARING SAID ELECTROSTATIC IMAGE AND SEPARATING THE LAYER OF PARTICULATE MARKING MATERIAL FROM SAID INSULATING SURFACE WHEREBY SAID MARKING MATERIAL IS ABSTRACTED FROM SAID DONOR SURFACE IN THE AREAS CORRESPONDING TO SAID ELECTROSTATIC IMAGE THEREBY FORMING A TRANSPARENCY CORRESPONDING TO SAID INTELLIGENCE TO BE REPRODUCED.
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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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |