The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 1987
Filed:
May. 05, 1986
Applicant:
Inventors:
Robert B Champ, Boulder, CO (US);
Robert L Vollmer, Boulder, CO (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; C07D / ;
U.S. Cl.
CPC ...
430 76 ; 548524 ; 430 58 ;
Abstract
A squarylium dye molecule is synthesized from a phenolic precursor. The resulting hydroxy pyrrolidino squarylium (OHPYRRSQ) dye does not have to be purified in order to provide the dye with a negative response in the Ames test for mutagenicity. A xerographic photoconductor using the molecule shows superior electrophotographic performance.