Aromatic heterocyclic-substituted cyclic sulfone compounds and electrophotographic elements containing them
US5352802A · kind A · utility
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14Claims
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Key dates
| Filing date | Sep 7, 1993 |
| Grant date | Oct 4, 1994 |
| Priority date | — |
| Expiry date | Sep 7, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/0661
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Certain chemical compounds, which are aromatic heterocyclic-substituted derivatives of 4H-thiopyran-1,1-dioxide, are electron-transport agents. These compounds exhibit good speed and toe voltage properties in electrophotographic elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.