| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 106310140 | Invisible | 7 |
| 20080245267 | Ink composition containing red luminous material - The present invention relates to an red luminescent ink composition exhibiting adequate and stable emission intensity under irradiation of ultraviolet rays and high solubility for a resin and an organic solvent. The ink composition of the present invention contains a luminous compound represented by the following formula (1): | 10-09-2008 |
| 20100050901 | Multi-level anticounterfeit, security and detection taggant - Various complex structures (nano/micro particles) are incorporated into a taggant providing different optical, magnetic and spectroscopic identification codes. The size and shape of the taggant can be tailored for many different types of products ranging from pharmaceuticals, auto and airplane parts all the way to apparel goods. By integrating a number of different nano/micro structures with various optical, electrical and magnetic properties, significant barriers are introduced to the counterfeiters attempting to replicate the taggant. The latter is easily incorporated to different types of products and is detected with various types of handheld readers/detectors depending on the complexity of the security level. The taggant may detect environmental materials or conditions. | 03-04-2010 |
| 20120125228 | INVISIBLE INK COMPOSITIONS - An inkjet ink composition, and in particular, invisible ink printable with an inkjet printing device. The present embodiments provide a water-based invisible ink that can be detected by using a long wavelength ultraviolet (UV) light and is easier and safer to use than other sources used to detect known invisible inks. | 05-24-2012 |
| 20130255536 | THERMOCHROMIC INK AND DOCUMENT PRINTED THEREWITH - A document which may be a security document has a thermochromic coating which may be a thermochromic ink on the substrate of the document. The ink may include several thermochromic materials which transition from various different colors to substantially clear in appearance as the ink is warmed to various temperatures. The combination of the colors of the thermochromic materials can give the document a different color at a number of different temperatures, until the coating is warmed to the highest color change point. When at or above the highest color change temperature, the coating becomes substantially transparent and the printed area assumes the color of the underlying substrate. The coating may also include non-reactive materials of yet another color that mixes with the colors of the thermochromic materials. The document may additionally include printed indicia on the substrate that are masked by the thermochromic materials at certain temperatures, and not masked by the thermochromic materials at other temperatures. | 10-03-2013 |
| 106310150 | Fluorescent | 1 |
| 20100307376 | SECURE DOCUMENT COMPRISING LUMINESCENT CHELATES - Aqueous thermal inkjet ink composition for the printing of security documents comprising at least one luminescent water-soluble lanthanide complex. | 12-09-2010 |
| 106310160 | Chromogenic (i.e., color formation by reaction of color former with color developer) | 2 |
| 20090050013 | THERMOCHROMIC COLORING COLOR-MEMORY COMPOSITION AND THERMOCHROMIC COLORING COLOR-MEMORY MICROCAPSULE PIGMENT CONTAINING THE SAME - A thermochromic coloring color-memory composition which comprises a homogeneous solubilized mixture of (A) an electron donative coloring organic compound, (B) an electron accepting compound and (C) an ester compound represented by the specific formula as a reaction medium which controls color reactions of the components (A) and (B). | 02-26-2009 |
| 106310170 | Specified developer (i.e., electron acceptor) | 1 |
| 106310180 | Phenolic hydroxy compound as the developer | 1 |
| 106310190 | With specified color former | 1 |
| 20090031921 | thermal ink - A thermal ink which comprises a colour former, a colour developer and a sensitizer, characterised in that the colour former comprises | 02-05-2009 |
