US4507480A
Expired / Lapsed
US
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Squaraines
Assignee: Xerox Corp
•
Filing: 1983-05-09
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Granted: 1985-03-26
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Expires: 2003-05-09
Abstract
Abstract Squaraine compositions of the following formula ##STR1## wherein Ar is selected from the moieties specified in the specification are useful for incorporation into layered photoresponsive devices.
Inventors
- 👤 Anthony M. Horgan
- 👤 Peter M. Kazmaier
- 👤 Richard A. Burt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:30
CPC Classifications
C; C07; C07D; C07D519/00; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/0609; G03G5/0611; G03G5/0622; G03G5/0644; G03G5/0646; G03G5/065
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
20 words
A squaraine of the formula ##STR6## wherein Ar is selected from the moieties specified resulting in the following squaraines: ##STR7##
Claim 2
Dependent Claim
20 words
A squaraine of the formula ##STR6## wherein Ar is selected from the moieties specified resulting in the following squaraines: ##STR7##
Claim 3
Dependent Claim
3 words
The squaraine bis-9-(8-hydroxyjulolidinyl)squaraine.
Claim 4
Dependent Claim
3 words
The squaraine bis-9-(8-hydroxyjulolidinyl)squaraine.
Claim 5
Dependent Claim
4 words
The squaraine bis-9-(8,10 dihydroxyjulolidinyl)squaraine.
Claim 6
Dependent Claim
4 words
The squaraine bis-9-(8,10 dihydroxyjulolidinyl)squaraine.
Claim 7
Dependent Claim
3 words
The squaraine bis(4-dimethylamino-2-methylthiophenyl)squaraine.
Claim 8
Dependent Claim
3 words
The squaraine bis(4-dimethylamino-2-methylthiophenyl)squaraine.
Claim 9
Dependent Claim
3 words
The squaraine bis(2,6-dihydroxy-4-dimethylaminophenyl)squaraine.
Claim 10
Dependent Claim
3 words
The squaraine bis(2,6-dihydroxy-4-dimethylaminophenyl)squaraine.
References Cited (Backward Citations)
US3824099A
Cited
US4150987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-25 | 1988-09-24 | 1989-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-25 | 1992-09-24 | 1993-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-25 | 1996-09-24 | 1997-03-26 | $7700.00 | Window Closed / Lapsed |