US3252874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive sheets, the preparation and use thereof
Assignee: 3M Co
•
Filing: 1959-10-23
•
Granted: 1966-05-24
•
Expires: 1979-10-23
Abstract
No abstract record available.
Inventors
- 👤 Franklin A Hamm
- 👤 Richard L Weiher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:13
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/087; G03G17/00; G03G17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A PROCESS FOR THE REPRODUCTION OF ALIGHT IMAGE WHICH COMPRISES EXPOSING TO SAID LIGHT IMAGE A PHOTOCONDUCTIVE RECEPTOR SHEET CONTAINING A PHOTOCONDUCTIVE INDIUM OXIDE COATING ON A CONTINGOUS ELECTRICALLY CONDUCTIVE BACKING, SAID RECEPTOR SHEET HAVING AN I30/ID RATIO OF AT LEAST ABOUT 2.5 AND BEING ESSENTIALLY INCAPABLE OF BUILDING UP AND MAINTAINING A SURFACE CHARGE, AND ELECTROLYTICALLY DEVELOPING SAID SHEET BY PASSING CURRENT SELECTIVELY THROUGH THE LIGHT EXPOSED PORTIONS OF THE INDIUM OXIDE COATING.
Claim 2
Dependent Claim
74 words
A PROCESS FOR THE REPRODUCTION OF ALIGHT IMAGE WHICH COMPRISES EXPOSING TO SAID LIGHT IMAGE A PHOTOCONDUCTIVE RECEPTOR SHEET CONTAINING A PHOTOCONDUCTIVE INDIUM OXIDE COATING ON A CONTINGOUS ELECTRICALLY CONDUCTIVE BACKING, SAID RECEPTOR SHEET HAVING AN I30/ID RATIO OF AT LEAST ABOUT 2.5 AND BEING ESSENTIALLY INCAPABLE OF BUILDING UP AND MAINTAINING A SURFACE CHARGE, AND ELECTROLYTICALLY DEVELOPING SAID SHEET BY PASSING CURRENT SELECTIVELY THROUGH THE LIGHT EXPOSED PORTIONS OF THE INDIUM OXIDE COATING.
References Cited (Backward Citations)
DE151971C
Cited
US2423624A
Cited
GB188030A
Cited
GB464112A
Cited
US2862815A
Cited
US2866903A
Cited
US3010883A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-23 | 1969-11-22 | 1970-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-23 | 1973-11-22 | 1974-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-23 | 1977-11-22 | 1978-05-24 | $7700.00 | Window Closed / Lapsed |