Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 8157905 | Security inks containing infrared absorbing metal compounds Composition including an oleophilic base ink composition having dispersed therein particles of an infrared-absorbing material wherein the infrared-absorbing material is selected from reduced indium tin oxide, titanium nitride, zirconium nitride, molybdenum metal, co... | 04/17/2012 |
| 7951236 | Liquid graphite A composition of liquid graphite is presented. The liquid graphite can be erased and applied to a surface using a writing instrument such as a ball point pen with a consistency, accuracy and darkness equivalent to that of a standard graphite, No. 2 pencil. The liqui... | 05/31/2011 |
| 7637993 | Water base ink for ink-jet recording A water base ink for ink-jet recording contains self-dispersible carbon black as a coloring agent. The total content of an organic acid having a number of carbon or carbons of 1 to 6 and a salt of the organic acid is not more than 400 ppm. The organic acid having a ... | 12/29/2009 |
| 7604694 | Marking liquid A marking liquid which contains a polymer dispersion with particles which are colored with marking agent, optionally further dyes and marking agents, one or more salts of a polyvalent, in particular bi- or trivalent cation, water and optionally moisture retaining ag... | 10/20/2009 |
| 7429291 | Print ink containing a plurality of fluorescent coloring materials and inkjet recording method The present invention provides a fluorescence ink having a high fluorescence intensity, and an ink jet recording method using the same. The ink contains a first fluorescent coloring material that emits fluorescence at a predetermined fluorescence wavelength to be us... | 09/30/2008 |
| 7427318 | Highlightable and highlighted mixtures, marking instruments, and methods of using the same A highlightable mixture, such as an ink, including a colored pigment, an eradicable colorant, and a non-eradicable colorant; a kit including the highlightable mixture and an eradicator solution; colorant complex including a colorless or substantially colorless eradi... | 09/23/2008 |
| 7364614 | Capillary-action, glitter markers and ink compositions for same The disclosure is generally related to writing instruments capable of making markings containing large diameter glitter pigment particles, and glitter ink compositions for the same. In one embodiment, the disclosure provides a capillary-action marker comprising a gl... | 04/29/2008 |
| 7347892 | Phase change inks containing modified pigment particles Disclosed is a phase change ink composition comprising (a) an ink carrier comprising (1) a polyalkylene wax and (2) a component selected from the group consisting of (A) amides, (B) esters, (C) ester-amides, (D) urethanes, (E) ureas, (F) urethane-ureas, and (G) mixt... | 03/25/2008 |
| 7344590 | Silver pigments The present invention relates to silver pigments based on transparent, low-refractive-index, platelet-shaped substrates which have a high-refractive-index coating consisting of TiO2 having a layer thickness of 5-300 nm and optionally an outer protective l... | 03/18/2008 |
| 7344587 | Magnetic ink tissue markings The invention provides tissue markings (such as tattoos) comprising magnetic particles, e.g., magnetite, and methods for making and altering, e.g., removing them. ... | 03/18/2008 |
| 7316790 | Sulfur-containing phosphor powders, methods for making phosphor powders and devices incorporating same Sulfur-containing phosphor powders, methods for making phosphor powders and devices incorporating same. The powders have a small particle size, narrow particle size distribution and are substantially spherical. The method of the invention permits the continuous prod... | 01/08/2008 |
| 7314547 | Fountain solution recycling system for commercial printers A method of and apparatus for extending the life of fountain solutions used in commercial printing presses comprises withdrawing fountain solution from the dampener recirculation system of a printing press and directing the withdrawn fountain solution through a sedi... | 01/01/2008 |
| 7309862 | Method for marking sites A method for determining changes of a site, wherein the site is treated with an aqueous dispersion having at least one binder, at least one substance emitting visible light on UV exposure, at least one binder and, optionally, a dispersant and the site thus treated a... | 12/18/2007 |
| 7291277 | Method and device for cleaning the fountain solution of a printing press A method for cleaning the fountain solution of a printing press with an automatically emptying separator (16), separates the dirt particles and oil residues from fountain solution and supplies them, as a mixture of dirt and fountain solution, to a dirt and fo... | 11/06/2007 |
| 7285158 | Recording agent, image forming device, and image forming method An image forming method, device and a recording agent for forming an image through subtractive color mixing by using ink of plural color components different in hue. The ink is created by mixing a first coloring agent expressing one of the color components and a sec... | 10/23/2007 |
| 7278730 | Decorative laminated safety glass The present invention is a decorative laminated article including an image bearing thermoplastic interlayer wherein the image has been printed on the interlayer using an ink jet printing process, wherein the image includes a white pigment on the surface of the therm... | 10/09/2007 |
| 7223302 | Methods of preparing aqueous colored pigment dispersions, and inkjet ink compositions The present invention describes methods for preparing aqueous colored pigment dispersions comprising the step of combining, in any order, a) a colored pigment, b) an azo coupler, c) an aromatic amine, d) a diazotizing agent, and e) an aqueous medium, wherein the aro... | 05/29/2007 |
| 7220301 | Ink, ink-jet recording process, recorded article, recording unit, ink cartridge, ink-jet recording apparatus fluorescence enhancing method and method of elongating life time of fluorescence Disclosed herein is an ink comprising (i) first and second organic compounds which are incompatible with each other; (ii) at least one of a compound exhibiting fluorescence properties and a coloring material exhibi... | 05/22/2007 |
| 7192474 | IR absorbing photosensitive optically variable ink compositions and process Water-soluble, photosensitive, optically variable (POV) inks exhibit improved OCR readability due to improved infrared absorption properties. The inks can produce images that can be viewed with both visible and ultraviolet light to have physically coincident positiv... | 03/20/2007 |
| 7189341 | Electrochemical sensor ink compositions, electrodes, and uses thereof The invention is directed to conductive polymer compositions, catalytic ink compositions (e.g., for use in screen-printing), electrodes produced by deposition of an ink composition, as well as methods of making, and methods of using such compositions and electrodes.... | 03/13/2007 |
| 7175946 | Modified pigment products and black matrixes comprising same The present invention describes modified pigment products comprising a pigment having attached at least one photopolymerizable group and at least one ionic or ionizable group. Dispersions, black matrixes, and resin compositions comprising these modified pigment prod... | 02/13/2007 |
| 7173078 | Process for preparing modified pigments A process for preparing a modified pigment having attached at least one organic group is described. This process comprises the step of reacting a dried mixture comprising a pigment having attached at least one reactive group and a modifying agent. The dried mixture ... | 02/06/2007 |
| 7160371 | Method of improving pigment fluorescence A process for the preparation of organic pigments with enhanced fluorescence, which process comprises treating said pigments with a surfactant, and to the fluorescent organic pigments obtained by said process. The pigments according to the present invention can be u... | 01/09/2007 |
| 7147696 | Fluorescent water base ink for ink-jet recording A fluorescent water base ink for ink-jet recording to be used for an ink-jet printer contains water, a pigment, a compound having primary or secondary amide group, and a fluorescent dye represented by the following formula (1): | 12/12/2006 |
| 7147801 | Ink jet ink composition and method for security marking Disclosed is an ink composition suitable for ink jet printing comprising a luminescent compound, a solvent, and an energy active compound, and optionally a non-luminescent colorant. The energy active compound, when exposed to energy, generates one or more active spe... | 12/12/2006 |
| 7144449 | Print ink containing a plurality of fluorescent coloring materials and inkjet recording method The present invention provides a fluorescence ink having a high fluorescence intensity, and an ink jet recording method using the same. The ink contains a first fluorescent coloring material that emits fluorescence at a predetermined fluorescence wavelength to be us... | 12/05/2006 |
| 7141103 | Photosensitive optically variable ink compositions useful for ink jet printing New photosensitive optically variable inks are capable of printing images having improved resistance to water. The inks produce images which can be viewed with both visible and ultraviolet light to have physically coincident positive and negative images. They contai... | 11/28/2006 |
| 7138009 | Signature protected photosensitive optically variable ink compositions and process Signature protected photosensitive optically variable (POV) inks are provided, which are capable of providing a unique signature in addition to other security features of POV inks. The inks contain at least two types of colorants, and a third, signature component an... | 11/21/2006 |
| 7126119 | Method for marking sites A composition and a method for determining changes of a site. The composition includes an aqueous dispersion including at least one binder, at least one substance emitting visible light on UV exposure and optionally a dispersant. The method includes treating the sit... | 10/24/2006 |
| 7118618 | Colored liquid composition for editing pen The colored liquid composition of the invention for a highlighter comprises a coloring element and water, the water content by weight lies in the range 10% to 30%. In addition, it comprises at least 40% of a liquid component having surface tension greater than 40 mN... | 10/10/2006 |
| 7115161 | Ink-jet ink compositions based on oil-in-water microemulsion forming nanoparticles upon application on a surface An Ink-jet ink composition for piezoelectric in-jet printing comprising: (a) a hydrophobic dye; (b) an oil-in-water microemulsion including: (i) a volatile oil; (ii) water; (iii) a co-solvent; (iv) at least one surfactant; and (v) a binder, wherein upon application ... | 10/03/2006 |
| 7115164 | Preparation of yellow pigments A process for the manufacture of a transparent Pigment Yellow 155 or transparent Pigment Yellow 180 is disclosed, said process includes grinding particles of said pigment in the presence of a grinding agent until said particles achieve a surface area of at least abo... | 10/03/2006 |
| 7112282 | Fountain solution recycling system for commercial printers A method of and apparatus for extending the life of fountain solutions used in commercial printing presses comprises withdrawing fountain solution from the dampener recirculation system of a printing press and directing the withdrawn fountain solution through a sedi... | 09/26/2006 |
| 7094278 | Multi-color writing inks The disclosure is generally related to a multi-color writing ink and, more particularly, to a multi-color writing instrument comprising a mixture of a first ink composition and a second ink composition, wherein the first and second ink compositions are immiscible wi... | 08/22/2006 |
| 7087159 | Fountain solution recycling system for commercial printers A method of and apparatus for extending the life of fountain solutions used in commercial printing presses comprises withdrawing fountain solution from the dampener recirculation system of a printing press and directing the withdrawn fountain solution through a sedi... | 08/08/2006 |
| 7063806 | Fluorescent diketopyrrolopyrroles The present invention relates to fluorescent diketopyrrolopyrroles (“DPPs”) of the formula characterized in that that at least two adjacent substituents R5 to R11 form an aromatic or ali... | 06/20/2006 |
| 7029524 | Water-based spray marking composition A water-based, aerosol marking composition that adheres to a variety of surfaces but is removable by mechanical rubbing with a dry cloth or by washing with water is provided. The composition comprises 10 to 50% by weight water; 5 to 50% by weight of a solvent select... | 04/18/2006 |
| 7022172 | Non-aqueous ink composition A non-aqueous ink composition includes pigment, solvent and dispersant. The dispersant has an ester structure and the solvent contains not smaller than 60% by weight polar organic solvent. The polar organic solvent contains not smaller than 10% by weight ester solve... | 04/04/2006 |
| 7018564 | Method for making phosphor ink and system using the same A method for making phosphor ink is provided which uses ultrasonic vibrations to remove surface defect layers from phosphor particles and to quickly and uniformly disperse the phosphor particles throughout a slurry. Propagation of low frequency vibration through the... | 03/28/2006 |
| 7002728 | Electrophoretic particles, and processes for the production thereof Copper chromite particles can advantageously be used as black particles in electrophoretic media and displays. Preferably, the copper chromite particles are coated with a silica coating and a polymer coating. ... | 02/21/2006 |
