Patent US3392018A successfully refreshed from Google Patents.
US3392018A
Expired / Lapsed
US
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Xerochemical development of electrostatic images
Assignee: Australian Government
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Filing: 1963-04-11
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Granted: 1968-07-09
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Expires: 1983-04-11
Abstract
No abstract record available.
Inventors
- 👤 Kenneth A Metcalfe
- 👤 William A Gold
- 👤 Frank C Gillespie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 01:00
CPC Classifications
G; G03; G03G; G03G11/00; G03G13/00; G03G13/06; G03G13/10; G03G9/00; G03G9/08; G03G9/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
THE METHOD OF DEVELOPING ELECTROSTATIC IMAGES WHICH COMPRISES PRODUCING AN ELECTROSTATIC LATENT IMAGE ON A BASE CONTAINING A PHOTOCONDUCTOR, DEVELOPING THE SAID ELECTROSTATIC LATENT IMAGE WITH A DEVELOPER COMPRISING AN ELECTRICAL INSULATING CARRIER LIQUID AND PHOTOCHEMICAL SUBSTANCE DISPERSED THEREIN IMMISCIBLE WITH THE CARRIER LIQUID AND OF A POLARITY IN THE CARRIER LIQUID TO BE ATTRACTED TO THE LATENT ELECTROSTATIC IMAGE AND CAPABLE OF BEING CATALYZED BY A SUBSTANCE IN THE BASE WHEN ACTIVATED BY ELECTMOMAGNETIC WAVES, AND SUBSEQUENTLY RENDERING THE IMAGE VISIBLE AND FIXED BY SUBJECTING THE DEPOSITED DEVELOPER TO ELECTROMAGNETIC WAVES.
Claim 2
Independent Claim
92 words
THE METHOD OF DEVELOPING ELECTROSTATIC IMAGES WHICH COMPRISES PRODUCING AN ELECTROSTATIC LATENT IMAGE ON A BASE CONTAINING A PHOTOCONDUCTOR, DEVELOPING THE SAID ELECTROSTATIC LATENT IMAGE WITH A DEVELOPER COMPRISING AN ELECTRICAL INSULATING CARRIER LIQUID AND PHOTOCHEMICAL SUBSTANCE DISPERSED THEREIN IMMISCIBLE WITH THE CARRIER LIQUID AND OF A POLARITY IN THE CARRIER LIQUID TO BE ATTRACTED TO THE LATENT ELECTROSTATIC IMAGE AND CAPABLE OF BEING CATALYZED BY A SUBSTANCE IN THE BASE WHEN ACTIVATED BY ELECTMOMAGNETIC WAVES, AND SUBSEQUENTLY RENDERING THE IMAGE VISIBLE AND FIXED BY SUBJECTING THE DEPOSITED DEVELOPER TO ELECTROMAGNETIC WAVES.
References Cited (Backward Citations)
US3083117A
Cited
US3072541A
Cited
US3052541A
Cited
US3152903A
Cited
US3142562A
Cited
US3231374A
Cited
US3068115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |