US3615404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1 3-phenylenediamine containing photoconductive materials
Assignee: Kimberly Clark Tissue Co
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Filing: 1968-04-25
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Granted: 1971-10-26
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Expires: 1988-04-25
Abstract
Abstract A new group of N,N,N'',N''-substituted-1,3-phenylenediamines and an electrophotographic material comprised of a slightly conductive support and an insulating coating thereon comprised of an insulating resin, and a N,N,N'',N''-substituted-1,3phenylenediamine photoconductor. An electron-acceptor sensitizing agent can also be added to the insulating coating.
Inventors
- 👤 Lawrence Price
- 👤 John Alan Mattor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:51
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/0612; G03G5/0614; G03G5/06142; G03G5/06144
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
17 words
An electrophotographic material as claimed in claim 1 wherein the insulating layer contains an electron-acceptor sensitizing agent.
Claim 2
Dependent Claim
20 words
An electrophotographic material as claimed in claim 2 wherein the photoconductive insulating layer comprises a photoconductor having the general formula
Claim 3
Dependent Claim
20 words
An electrophotographic material as claimed in claim 3 wherein the photoconductive insulating layer comprises a photoconductor having the general formula
Claim 4
Dependent Claim
20 words
An electrophotographic material as claimed in claim 2 wherein the photoconductive insulating layer comprises a photoconductor having the general formula
Claim 5
Dependent Claim
14 words
An electrophotographic material as claimed in claim 2 wherein the electron acceptor is 9,10-phenanthrenedione.
Claim 6
Dependent Claim
19 words
An electrophotographic material as claimed in claim 3 wherein the photoconductor is N,N,N'',N''-tetrabenzyl-1,3-phenylenediamine and the electron acceptor is 9,10-phenanthrenedione.
Claim 7
Dependent Claim
17 words
An electrophotographic material as claimed in claim 2 wherein the electron acceptor is 9-fluorenone, 2,4,7-trinitrofluorenone, or 2-nitrofluorenone.
Claim 8
Dependent Claim
15 words
An electrophotographic material as claimed in claim 3 wherein the photoconductor is N,N,N'',N''-tetra-(4-methylbenzyl)-1,3-phenylenediamine or N,N,N'',N''-tetra(2,5-dimethylbenzyl)-1,3-phenylenediamine.
Claim 9
Dependent Claim
17 words
An electrophotographic material as claimed in claim 2 wherein the electron acceptor is 2,4,3''-trinitrostilbene, 2,4-dinitrostilbene or 2,4,6-trinitrostilbene.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |