US4956440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arylamine containing polyhydroxyether resins
Assignee: Xerox Corp
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Filing: 1988-11-23
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Granted: 1990-09-11
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Expires: 2008-11-23
Abstract
Abstract Polymeric tertiary arylamine compounds of the phenoxy resin type which find utility especially in electrophotographic imaging.
Inventors
- 👤 William W. Limburg
- 👤 Dale S. Renfer
- 👤 John F. Yanus
- 👤 Leon A. Teuscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:17
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/64; C08G59/02; C08G59/04; C08G59/06; C08G59/066; C08G59/20; C08G59/22; C08G59/28; C08G59/621; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/0618; G03G5/062; G03G5/07; G03G5/075; G03G5/076; G03G5/0763; G03G5/0764; G03G5/0766; G03G5/14; G03G5/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
An arylamine polymer represented by the formula: ##STR24## wherein: R is selected from the group consisting of --H, --CH 3 , and --C 2 H 5 ; m is between about 4 and about 1,000; and A is an arylamine group represented by the formula: ##STR25## wherein: m is 0 or 1, Z is selected from the group consisting of: ##STR26## wherein: n is 0 or 1, Ar is selected from the group consisting of: ##STR27## wherein: R 1 is selected from the group consisting of --CH 3 , --C 2 H 5 , --C 3 H 7 and --C 4 H 9 , Ar' is selected from the group consisting of: ##STR28## X is selected from the group consisting of: --CH 2 --, --C(CH 3 ) 2 --, --O--, --S--, ##STR29## and B is selected from the group consisting of: the arylamine group as defined for A, and ##STR30## wherein Ar is as defined above, and V is selected from the group consisting of: --CH 2 --, --C(CH 3 ) 2 --, --O--, --S--, ##STR31## and n is 0 or 1.
Claim 2
Dependent Claim
182 words
An arylamine polymer represented by the formula: ##STR24## wherein: R is selected from the group consisting of --H, --CH 3 , and --C 2 H 5 ; m is between about 4 and about 1,000; and A is an arylamine group represented by the formula: ##STR25## wherein: m is 0 or 1, Z is selected from the group consisting of: ##STR26## wherein: n is 0 or 1, Ar is selected from the group consisting of: ##STR27## wherein: R 1 is selected from the group consisting of --CH 3 , --C 2 H 5 , --C 3 H 7 and --C 4 H 9 , Ar' is selected from the group consisting of: ##STR28## X is selected from the group consisting of: --CH 2 --, --C(CH 3 ) 2 --, --O--, --S--, ##STR29## and B is selected from the group consisting of: the arylamine group as defined for A, and ##STR30## wherein Ar is as defined above, and V is selected from the group consisting of: --CH 2 --, --C(CH 3 ) 2 --, --O--, --S--, ##STR31## and n is 0 or 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1993-09-10 | 1994-03-12 | 1994-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-10 | 1998-03-12 | 1998-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-10 | 2002-03-12 | 2002-09-11 | $7700.00 | Window Closed / Lapsed |