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:
Jul. 20, 1999
Filed:
Dec. 11, 1997
Ronald Harold Levin, Boulder, CO (US);
Scott Thomas Mosier, Boulder, CO (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
Benzaldehyde-based hydrazone compounds of the formula ##STR1## wherein A represents a monocyclic or polycyclic divalent aromatic radical including at least one hydroxy-terminated substituent; R.sub.1 represents an N,N-dialkyl amino, N,N-diaryl amino or N-alkyl,N-aryl amino group; each R.sub.2 independently represents an alkyl, halogen, alkoxy group or substituted or unsubstituted monocyclic or polycyclic monovalent aromatic radical, with the proviso that at least one R.sub.2 is aromatic; and R.sub.3 represents hydrogen, alkyl or a substituted or unsubstituted monocyclic or polycyclic monovalent aromatic radical.