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US 4,968,813 AGranted
Derivatives of 4H-thiopyran-1,1-dioxides
AssigneeEastman Kodak Company
InventorsNorman G. Rule, Teh-Ming Kung
Life of this patent
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Abstract
Certain new chemical compounds are derivatives of 4H-thiopyran-1,1-dioxides, and are useful as electron-transport agents in electrophotographic elements.
Claims2
A chemical compound having the structure ##STR3## wherein R is alkoxy having 4 to 8 carbon atoms.
Dependencies are inferred from the claim text.