US4156757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically conductive perylene derivatives
Assignee: BASF SE
•
Filing: 1977-08-03
•
Granted: 1979-05-29
•
Expires: 1997-08-03
Abstract
Abstract Electrically conductive organic perylene derivatives and their use. They have the formulae <IMAGE> <IMAGE> <IMAGE> where R is hydrogen, alkyl or oxaalkyl of 1 to 10 carbon atoms, cycloalkyl, alkaryl or aryl which is unsubstituted or substituted by from 1 to 3 alkoxy, halogen, nitro or amino, or is hydroxyalkyl-CH2-(CH2)n-OH, where n is an integer from 1 to 10, and which may or may not contain oxa groups, and R1 is one of the following divalent radicals which join the two N atoms to form a ring: <IMAGE>
Inventors
- 👤 Fritz Graser
- 👤 Herbert Naarmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:22
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0622; G03G5/0644; G03G5/0646; G03G5/0657; G03G5/0659; H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H10; H10K; H10K85/00; H10K85/60; H10K85/615; H10K85/621; H10K99/00; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y02E10/549
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
41 words
A layered photoconductor or semiconductor having an electrically conductive layer consisting essentially of an organic peryleneimidazole of the formula ##STR23## wherein R 1 is one of the following divalent radicals which join the two N atoms to form a ring: ##STR24##
Claim 2
Dependent Claim
41 words
A layered photoconductor or semiconductor having an electrically conductive layer consisting essentially of an organic peryleneimidazole of the formula ##STR23## wherein R 1 is one of the following divalent radicals which join the two N atoms to form a ring: ##STR24##
Claim 3
Dependent Claim
14 words
A photoconductor or semiconductor as claimed in claim 1 wherein R 1 is ##STR25##
Claim 4
Dependent Claim
14 words
A photoconductor or semiconductor as claimed in claim 1 wherein R 1 is ##STR26##
Claim 5
Dependent Claim
14 words
A photoconductor or semiconductor as claimed in claim 1 wherein R 1 is ##STR27##
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) | 1982-05-28 | 1982-11-27 | 1983-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-28 | 1986-11-27 | 1987-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-28 | 1990-11-27 | 1991-05-29 | $7700.00 | Window Closed / Lapsed |