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. 23, 1992
Filed:
Nov. 17, 1989
Loren D Albin, Oakdale, MN (US);
David R Boston, Woodbury, MN (US);
Derek R Callaby, Oakdale, MN (US);
Jacqueline M Furlong, Oakdale, MN (US);
Robert J Lokken, Maplewood, MN (US);
Roger A Mader, Stillwater, MN (US);
David B Olson, St. Croix, MN (US);
Wayne O Otteson, Woodbury, MN (US);
Norman P Sweeny, North Oaks, MN (US);
Daryle H Busch, Lawrence, KS (US);
Nusrallah Jubran, St. Paul, MN (US);
Other;
Abstract
This invention concerns monosubstituted dithiooxamides, and a preferred class comprises those wherein the substituent is such that the resulting dithiooxamide derivative is substantially nonvolatile at about room temperature. Preferred materials are those for which when the monosubstituent dithiooxamide is complexed with a transition metal cation, the resulting polymer is substantially a dark, i.e., preferably blue or blue-black color. Carbonless paper constructions involving use of N-(monosubstituted)dithiooxamides to advantage are described.