Patent US2895847A successfully refreshed from Google Patents.
US2895847A
Expired / Lapsed
US
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Electric image development
Assignee: Battelle Development Corp
•
Filing: 1953-12-21
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Granted: 1959-07-21
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Expires: 1973-12-21
Abstract
No abstract record available.
Inventors
- 👤 Clyde R Mayo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:34
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0806; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
THE METHOD OF DEVELOPING AN ELECTROSTATIC IMAGE ON AN ELECTROSTATIC IMAGE-BEARING MEMBER COMPRISING FORMING A SUBSTANTIALLY UNIFORM LAYER OF FINELY-DIVIDED ELECTROSTATICALLY CHARGED POWDER MARKING PARTICLES ON A SMOOTH SUPPORT SURFACE EXTENDING ACROSS THE IMAGE-BEARING PORTION OF SAID IMAGE-BEARING MEMBER, SAID PARTICLES LOOSELY ADHERING TO SAID SURFACE BY ELECTROSTATIC ATTRACTION, CONTACTING SAID IMAGE-BEARING MEMBER WITH SAID LAYER OF MARKING PARTICLES, SLIDING AND SURFACE BEARING SAID LAYER OF MARKING PARTICLES RELATIVE TO SAID IMAGEBEARING MEMBER AND REMOVING SAID SURFACE FROM SAID IMAGE-BEARING MEMBER WHEREBY SAID MARKING PARTICLES ARE SELECTIVELY TRANSFERRED FROM SAID LAYER TO SAID IMAGEBEARING MEWMBER IN THE PATTERN OF THE ELECTRISTATIC IMAGE.
Claim 2
Independent Claim
102 words
THE METHOD OF DEVELOPING AN ELECTROSTATIC IMAGE ON AN ELECTROSTATIC IMAGE-BEARING MEMBER COMPRISING FORMING A SUBSTANTIALLY UNIFORM LAYER OF FINELY-DIVIDED ELECTROSTATICALLY CHARGED POWDER MARKING PARTICLES ON A SMOOTH SUPPORT SURFACE EXTENDING ACROSS THE IMAGE-BEARING PORTION OF SAID IMAGE-BEARING MEMBER, SAID PARTICLES LOOSELY ADHERING TO SAID SURFACE BY ELECTROSTATIC ATTRACTION, CONTACTING SAID IMAGE-BEARING MEMBER WITH SAID LAYER OF MARKING PARTICLES, SLIDING AND SURFACE BEARING SAID LAYER OF MARKING PARTICLES RELATIVE TO SAID IMAGEBEARING MEMBER AND REMOVING SAID SURFACE FROM SAID IMAGE-BEARING MEMBER WHEREBY SAID MARKING PARTICLES ARE SELECTIVELY TRANSFERRED FROM SAID LAYER TO SAID IMAGEBEARING MEWMBER IN THE PATTERN OF THE ELECTRISTATIC IMAGE.
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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) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |