Patent US4465753A successfully refreshed from Google Patents.
US4465753A
Expired / Lapsed
US
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Indoline electrophotoconductor
Assignee: DIC Corp
•
Filing: 1983-06-27
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Granted: 1984-08-14
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Expires: 2003-06-27
Abstract
Abstract An electrophotoconductor of high sensitivity and durability comprising a photosensitive layer containing an indoline compound of the general formula ##STR1## wherein A represents an aromatic hydrocarbon or aromatic heterocyclic group which may have a substituent, and R 1 and R 2 , independently from each other, represent a hydrogen or halogen atom, or an alkyl, aralkyl or aryl group.
Inventors
- 👤 Hisami Tanaka
- 👤 Osamu Takenouchi
- 👤 Tatsuo Kawara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:53
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0622; G03G5/0644; G03G5/0661; G03G5/0624; G03G5/0627; G03G5/0629
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
54 words
An electrophotoconductor comprising a photosensitive layer containing an indoline compound of the general formula ##STR6## wherein A is an aromatic hydrocarbon or aromatic heterocyclic group which may have a substituent, and R 1 and R 2 , independently from each other, are a hydrogen or halogen atom, or an alkyl, aralkyl or aryl group.
Claim 2
Dependent Claim
54 words
An electrophotoconductor comprising a photosensitive layer containing an indoline compound of the general formula ##STR6## wherein A is an aromatic hydrocarbon or aromatic heterocyclic group which may have a substituent, and R 1 and R 2 , independently from each other, are a hydrogen or halogen atom, or an alkyl, aralkyl or aryl group.
Claim 3
Dependent Claim
16 words
The electrophotoconductor of claim 1 wherein the indoline compound is a compound of the formula: ##STR7##
Claim 4
Dependent Claim
16 words
The electrophotoconductor of claim 1 wherein the indoline compound is a compound of the formula: ##STR8##
Claim 5
Dependent Claim
16 words
The electrophotoconductor of claim 1 wherein the indoline compound is a compound of the formula: ##STR9##
Claim 6
Dependent Claim
16 words
The electrophotoconductor of claim 1 wherein the indoline compound is a compound of the formula: ##STR10##
Claim 7
Dependent Claim
16 words
The electrophotoconductor of claim 1 wherein the indoline compound is a compound of the formula: ##STR11##
Claim 8
Dependent Claim
16 words
The electrophotoconductor of claim 1 wherein the indoline compound is a compound of the formula: ##STR12##
Claim 9
Dependent Claim
16 words
The electrophotoconductor of claim 1 wherein the indoline compound is a compound of the formula: ##STR13##
Claim 10
Dependent Claim
16 words
The electrophotoconductor of claim 1 wherein the indoline compound is a compound of the formula: ##STR14##
Claim 11
Dependent Claim
16 words
The electrophotoconductor of claim 1 wherein the indoline compound is a compound of the formula: ##STR15##
Claim 12
Dependent Claim
16 words
The electrophotoconductor of claim 1 wherein the indoline compound is a compound of the formula: ##STR16##
Claim 13
Dependent Claim
16 words
The electrophotoconductor of claim 1 wherein the indoline compound is a compound of the formula: ##STR17##
Claim 14
Dependent Claim
16 words
The electrophotoconductor of claim 1 wherein the indoline compound is a compound of the formula: ##STR18##
Claim 15
Dependent Claim
16 words
The electrophotoconductor of claim 1 wherein the indoline compound is a compound of the formula ##STR19##
Claim 16
Dependent Claim
16 words
The electrophotoconductor of claim 1 wherein the indoline compound is a compound of the formula: ##STR20##
Claim 17
Dependent Claim
16 words
The electrophotoconductor of claim 1 wherein the indoline compound is a compound of the formula: ##STR21##
References Cited (Backward Citations)
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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) | 1987-08-14 | 1988-02-13 | 1988-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-14 | 1992-02-13 | 1992-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-14 | 1996-02-13 | 1996-08-14 | $7700.00 | Window Closed / Lapsed |