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. 06, 1976
Filed:
Oct. 29, 1974
James Kern Sears, Webster Groves, MO (US);
Monsanto Company, St. Louis, MO (US);
Abstract
Pressure-sensitive record materials wherein a colorless or substantially colorless chromogen is reacted in the presence of a solvent with an acidic sensitizing material to form a colored mark in a pattern determined by the application of localized pressure to the record material are prepared utilizing terphenyls, partially hydrogenated terphenyls, and lower alkylated terphenyls having at least 65 percent aromaticity as the solvent for the chromogenic material. The terphenyl compounds which are liquids are useful alone or in combination with diluents to give rapid color development on both resin and clay coated papers. Compounds which are normally solids or semisolids are useful in combination with diluents where the combination is a liquid.