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:
Aug. 04, 1992
Filed:
Aug. 24, 1990
Eckart Mathias, Catonsville, MD (US);
W. R. Grace & Co.-Conn., New York, NY (US);
Abstract
Provided is an ink composition which comprises a fluorescent dye. The ink composition is useful in tagging for subsequent identification various articles having a polymeric or porous organic or inorganic surface. The ink composition comprises a non-fluorescent ink such as a black ink, a fluorescent dye, and a solvent for the fluorescent dye, which solvent swells and impregnates the surface of the article thereby permitting impregnation of the article by the fluorescent dye. The resulting tagged article has a printed surface with a fluorescent dye impregnated within the article directly beneath the printing on the surface. Identification of the article can then take place by removing printed material, and subjecting the article to UV irradiation. Observing a bright fluorescent color characteristic of the fluorescent dye used confirms the authenticity of the article.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile