DNA-TAGGED INKS AND SYSTEMS AND METHODS OF USE

    公开(公告)号:US20210238434A1

    公开(公告)日:2021-08-05

    申请号:US16972760

    申请日:2019-06-06

    Abstract: The invention provides stable nucleic acid-tagged ink compositions suitable for printing an ink mark on an object as an identifier or for authentication of goods, and methods of marking an article with such a mark. These ink compositions contain a specific nucleic acid of known length and sequence that can be deposited on an article by inkjet printing or thermal transfer printing to produce a mark, which may be visible or invisible, covert or overt. These ink products are stable and can accurately deliver an amount of nucleic acid tag that can be removed or sampled and analyzed by known DNA analytical methods to detect the specific nucleic acid on the marked article but which cannot be identified without previous knowledge of the nucleic acid sequence in the mark. The invention also provides methods of applying these tagged marks using inkjet printers and printer systems, and the systems for using the tagged ink compositions.

    CONDENSATION RESISTANT KETONE-BASED INKJET INKS

    公开(公告)号:US20250101243A1

    公开(公告)日:2025-03-27

    申请号:US18834216

    申请日:2023-01-31

    Abstract: Embodiment of the present invention relate to a continuous inkjet ink composition which uses a higher order ketone solvent or solvents (ketones having 5 or more carbon atoms) in place or more hazardous solvents such as methyl ethyl ketone and a secondary solvent with a higher derived no effect inhalation level greater than 200 mg/m3 such as ethanol. These ink compositions contain a combination of resins including a cellulose resin and a polyurethane resin or an acrylic resin, with an optional third resin. A colorant (i.e., a dye, preferably a conductive dye) also is included.

Patent Agency Ranking