Patent US3212890A successfully refreshed from Google Patents.
US3212890A
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Photoconductive element for use in electrophotography containing a heavy metal soap of a long chain fatty acid; and process for using same
Assignee: 3M Co
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Filing: 1964-02-26
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Granted: 1965-10-19
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Expires: 1984-02-26
Abstract
No abstract record available.
Inventors
- 👤 Donal G Kimble
- 👤 Clarence O Mcmaster
- 👤 Byron W Neher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:11
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
58 words
A FLEXIBLE PHOTOCONDUCTIVE COPY-SHEET CAPABLE OF PRODUCING GRAPHIC REPRESENTATIONS, COMPRISING A FLEXIBLE CARRIER SHEET, A LIGHT-ACCESSIBLE PHOTOCONDUCTIVE LAYER BONDED TO SAID CARRIER SHEET, AND A HEAVY METAL SOAP OF A LONG CHAIN FATTY ACID EVENLY DISTRIBUTED WITHIN AT LEAST A PORTION OF THE THICKNES OF SAID COPY-SHEET, SAID METAL SOAP BEING VISIBLY REACTIVE WITH A REACTANT DEVELOPER MATERIAL.
Claim 2
Dependent Claim
58 words
A FLEXIBLE PHOTOCONDUCTIVE COPY-SHEET CAPABLE OF PRODUCING GRAPHIC REPRESENTATIONS, COMPRISING A FLEXIBLE CARRIER SHEET, A LIGHT-ACCESSIBLE PHOTOCONDUCTIVE LAYER BONDED TO SAID CARRIER SHEET, AND A HEAVY METAL SOAP OF A LONG CHAIN FATTY ACID EVENLY DISTRIBUTED WITHIN AT LEAST A PORTION OF THE THICKNES OF SAID COPY-SHEET, SAID METAL SOAP BEING VISIBLY REACTIVE WITH A REACTANT DEVELOPER MATERIAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |