US3246983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic reproduction process
Assignee: Azoplate Corp
•
Filing: 1960-04-06
•
Granted: 1966-04-19
•
Expires: 1980-04-06
Abstract
No abstract record available.
Inventors
- 👤 Sus Oskar
- 👤 Tomanek Martha
- 👤 Klupfel Kurt Walter
- 👤 Behmenburg Hans
- 👤 Neugebauer Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:02
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/04; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/62; C07D213/63; C07D213/68; C07D235/00; C07D235/02; C07D235/04; C07D235/06; C07D235/08; C07D235/10; C07D235/14; C07D307/00; C07D307/02; C07D307/34; C07D307/38; C07D307/52; C07D307/54; C07D307/56; C07D307/70; C07D307/71; C07D409/00; C07D409/02; C07D409/06; C09; C09B; C09B23/00; C09B23/14; C09B23/148; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0666; G03G5/0668; G03G5/067; G03G5/0672; C07C; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A PHOTOGRAPHIC REPRODUCTION PROCESS WHICH COMPRISES ELECTROSTATICALLY CHARGING A SUPPORTED PHOTOCONDUCTIVE INSULATING LAYER, EXPOSING THE CHARGED MATERIAL TO LIGHT UNDER A MASTER AND DEVELOPING THE RESULTING IMAGE WITH AN ELETROSCOPIC MATERIAL, THE PHOTOCONDUCTIVE LAYER COMPRISING A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
40 words
A PHOTOGRAPHIC REPRODUCTION PROCESS WHICH COMPRISES ELECTROSTATICALLY CHARGING A SUPPORTED PHOTOCONDUCTIVE INSULATING LAYER, EXPOSING THE CHARGED MATERIAL TO LIGHT UNDER A MASTER AND DEVELOPING THE RESULTING IMAGE WITH AN ELETROSCOPIC MATERIAL, THE PHOTOCONDUCTIVE LAYER COMPRISING A COMPOUND HAVING THE FORMULA
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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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |