US3159483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of electrophotographic reversed images
Assignee: Azoplate Corp
•
Filing: 1960-06-17
•
Granted: 1964-12-01
•
Expires: 1980-06-17
Abstract
No abstract record available.
Inventors
- 👤 Behmenburg Hans
- 👤 Tomanek Martha
- 👤 Neugebauer Wilhelm
- 👤 Klupfel Kurt-Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:23
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/05; G03G5/0503; G03G5/051; G03G5/0514
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PHOTOGRAPHIC REPRODUCTION PROCESS FOR THE PRODUCTION OF REVERSED IMAGES OF IMPROVED COVERAGE WHICH COMPRISES EXPOSING AN ELECTROSTATICALLY CHARGED SUPPORTED HOMOGENEOUS PHOTOCONDUCTIVE INSULATING LAYER COMPRISING AN ORGANIC PHOTOCONDUCTOR AND A WAX TO LIGHT UNDER A MASTER AND DEVELOPING THE RESULTING ELECTROSTATIC LATENT IMAGE BY CONTACT WITH A DEVELOPER CONTAINING PARTICLES HAVING AN ELECTRIC CHARGE OF THE SAME POLARITY AS THAT OF THE ELECTROSTATIC LATENT IMAGE.
Claim 2
Dependent Claim
65 words
A PHOTOGRAPHIC REPRODUCTION PROCESS FOR THE PRODUCTION OF REVERSED IMAGES OF IMPROVED COVERAGE WHICH COMPRISES EXPOSING AN ELECTROSTATICALLY CHARGED SUPPORTED HOMOGENEOUS PHOTOCONDUCTIVE INSULATING LAYER COMPRISING AN ORGANIC PHOTOCONDUCTOR AND A WAX TO LIGHT UNDER A MASTER AND DEVELOPING THE RESULTING ELECTROSTATIC LATENT IMAGE BY CONTACT WITH A DEVELOPER CONTAINING PARTICLES HAVING AN ELECTRIC CHARGE OF THE SAME POLARITY AS THAT OF THE ELECTROSTATIC LATENT IMAGE.
References Cited (Backward Citations)
US2297691A
Cited
US2663636A
Cited
US2901348A
Cited
US2862815A
Cited
US2758939A
Cited
US3005707A
Cited
US3072479A
Cited
US3079253A
Cited
US2940848A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |