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:
Feb. 05, 1991
Filed:
Oct. 11, 1989
Applicant:
Inventors:
John H Lauterbach, Louisville, KY (US);
Carl B Jenkins, Louisville, KY (US);
Assignee:
Brown & Williamson Tobacco Corporation, Louisville, KY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
2524081 ; 73 73 ; 106 20 ; 252963 ;
Abstract
A solution-type moisture indicating ink to be printed on a substrate and change color at a preselected ambient moisture. The indicator ink includes a solvent carrier system, a moisture indicating substance which changes color under the influence of moisture, and a resin system as a binder to hold the moisture indicating substance to the substrate as well as a film forming and viscosity adjusting agent.