Composition For Marking An Inorganic Settable Or Ceramic Object (e.g., For Marking Cement Or Glass, Etc.) Patents (Class 106/31.05)
  • Patent number: 10435574
    Abstract: A thermal ink jet ink composition include a volatile organic solvent, a binder resin, a dye, a humectant in an amount from 1% to 40% by weight of the ink composition, and an additive for extending the decap time. The additive is present in an amount greater than 0.1% by weight of the thermal ink jet ink composition. The additive is selected from fluorinated surfactants, ionic surfactants, and nonionic surfactants.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: October 8, 2019
    Assignee: VIDEOJET TECHNOLOGIES INC.
    Inventors: Anthony Selmeczy, Kyle Harvey, Casey Robertson, Linfang Zhu
  • Patent number: 10392524
    Abstract: Disclosed are compositions, such as inkjet inks, for jetting onto a ceramic substrate, and associated methods and systems. The compositions comprise a pigment compound that is configured to be jetted on a ceramic substrate during a ceramic inkjet process to impart a color effect to the ceramic substrate, and a reduction agent which, when exposed to a firing temperature, reacts with the pigment compound to cause a reduction reaction. In some embodiments, the pigment compound comprises jettable copper particles, which can cause the fired composition to take on a red or oxblood color, which can be used for decoration.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: August 27, 2019
    Assignee: ELECTRONICS FOR IMAGING, INC.
    Inventors: Mark Zavada, David Weber, Louis Fage, Matthew Tennis
  • Patent number: 10344173
    Abstract: An inkjet ink includes a binder resin, a tackifier, a colorant, and an organic solvent. The binder resin is a phenol resin having a softening point in a range from 70 degrees Celsius or more to 125 degrees Celsius or less. The colorant is a dye. The tackifier is a terpene phenol resin whose hydroxyl value is 10 to 45 mgKOH/g.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: July 9, 2019
    Assignee: GENERAL CO., LTD
    Inventors: Hidehiro Takemoto, Kozo Isobe
  • Patent number: 10316203
    Abstract: The present invention relates to adhesion promoting composition comprising: (a) an organotitanate adhesion promoter; and (b) at least one surface active agent; and (c) optionally comprises at least one solvent; wherein the surface active agent comprises a compound selected from the group comprising a surfactant and a polymeric surfactant; wherein the adhesion promoting composition imparts adhesion on a polymer film even if: (i) quality of the film substrate has degraded, (ii) the film substrate has inconsistent surface treatments across the films. In second aspect, the present invention relates to ink compositions comprising the adhesion promoting composition. In third aspect, the present invention relates to a method for improving the adhesion of an ink composition to a substrate, wherein the ink composition comprises adhesion promoting composition.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: June 11, 2019
    Assignee: Dorf Ketal Chemicals (India) Private Limited
    Inventors: Mahesh Subramaniyam, Michael Michalczyk
  • Patent number: 9957401
    Abstract: Solvent-based inkjet ink formulations including an organic solvent, a resin, a surfactant, and a colorant are provided. The inks have many desirable attributes such as extended decap time.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: May 1, 2018
    Assignee: Markem-Imaje Corporation
    Inventors: Benjamin J. Brown, Richard C. Woudenberg, Richard J. Larson, Jr., Ann Benjamin, Corey Williams
  • Patent number: 9844951
    Abstract: The present invention relates to a method for marking a container comprising at least a transparent wall comprising the following steps: a) applying at least one spot of ink on an outer surface of said transparent wall, b) heating said transparent wall, c) engraving a data matrix in the spot of ink of said transparent wall. The invention also relates to a marked container and to a method for identifying such a marked container.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: December 19, 2017
    Assignee: Becton Dickinson France
    Inventor: Jérôme Krief
  • Patent number: 9822271
    Abstract: Disclosed are compositions, such as inkjet inks, for jetting onto a ceramic substrate, and associated methods and systems. The compositions comprise a pigment compound that is configured to be jetted on a ceramic substrate during a ceramic inkjet process to impart a color effect to the ceramic substrate, and a reduction agent which, when exposed to a firing temperature, reacts with the pigment compound to cause a reduction reaction. In some embodiments, the pigment compound comprises jettable copper particles, which can cause the fired composition to take on a red or oxblood color, which can be used for decoration.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: November 21, 2017
    Assignee: ELECTRONICS FOR IMAGING, INC.
    Inventors: Mark Zavada, David Weber, Louis Fage, Matthew Tennis
  • Patent number: 9752039
    Abstract: A thermal ink jet ink composition includes at least 50% by weight volatile organic solvent selected from C1-C4 alcohols, C3-C6 ketones, C3-C6 esters, C4-C8 ethers, and mixtures thereof; a colorant; a humectant present in an amount from about 1% to about 30% by weight; from 0.3% to 8% by weight of a binder resin; and not more than 5% by weight water; wherein the ink composition is compatible with components of a thermal ink jet printer.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: September 5, 2017
    Assignee: Videojet Technologies Inc.
    Inventors: Kyle Harvey, Michael Kozee, Linfang Zhu, Casey Robertson, Anthony Selmeczy
  • Patent number: 9573361
    Abstract: An image-forming method includes a reaction solution-applying step of applying a reaction solution containing a thickening agent and a colorant-aggregating component aggregating a colorant in ink to an intermediate transfer medium, a first ink-applying step of applying a first ink to the intermediate transfer medium provided with the reaction solution, a second ink-applying step of applying a second ink to the intermediate transfer medium provided with the first ink, and a transfer step of transferring an intermediate image formed on the intermediate transfer medium provided with the second ink to a recording medium. An ink layer formed on the intermediate transfer medium by applying the first ink thereto has a yield value of 0.5 Pa or more.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: February 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinsuke Tsuji, Tsuyoshi Kanke, Takashi Imai, Yuichiro Kanasugi, Itaru Tsuji
  • Patent number: 9567660
    Abstract: A system and method of verifying that a part is heat treated to strengthen the part. The part is marked with a thermo-chromatic composition before heat treating. The part is then heat treated to strengthen the part and change the color of the thermo-chromatic composition to indicate successful completion of the heat treating process. A detector may act to prevent the inclusion of a non-heat treated part in an assembly by disabling an assembly tool. A controller may also provide data related to the completion of the heat treating process to be recorded in a database.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: February 14, 2017
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Aindrea McKelvey Campbell, Amanda Kay Freis, Peter A. Friedman, Rosa Lynda Nuno, S. George Luckey, Jr.
  • Patent number: 9512031
    Abstract: A digital glaze for high grammage, without the use of anti-settling agents, referred to as digital glazes for digital inkjet printing techniques to apply high grammage, maintaining the same aesthetic and technical characteristics obtained with traditional glazes and non-digital application techniques. No anti-settling agents are used in the composition to prevent the digital glaze from being thixotropic and creating problems in the inkjet printing. The composition includes at least one medium that is liquid at ambient temperature, formed by a mixture of water and polar solvents and/or solvents of medium to low polarity, having a percentage by weight of between 20 and 70% of the total weight of the digital glaze; and at least one mixture of ceramic raw materials and/or frits as a glaze-forming material, having a percentage by weight of between 30 and 80% of the total weight of the digital glaze.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: December 6, 2016
    Assignee: TORRECID, S.A.
    Inventors: Jose Manuel Madrigal Villegas, Jorge Ribes Torner, Francisco Alejandro Tirado Francisco, Juan Vicente Corts Ripoll, Francisco Sanmiguel Roche
  • Patent number: 9403395
    Abstract: A color laser markable laminate includes at least a transparent polymeric support and a color forming layer including a leuco dye; an infrared dye; and a polymeric binder including vinyl acetate and at least 85 wt % of vinyl chloride based on the total weight of the binder; wherein the color laser markable laminate includes a specific phenol stabilizer sterically hindered by a ring containing three nitrogen atoms. A method for preparing a color laser marked document is also disclosed.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: August 2, 2016
    Assignee: AGFA-GEVAERT
    Inventors: Bart Waumans, Paul Callant, Johan Loccufier
  • Patent number: 9296911
    Abstract: A thermal ink jet ink composition include a volatile organic solvent, a binder resin, a dye, a humectant in an amount from 1% to 40% by weight of the ink composition, and an additive for extending the decap time. The additive is present in an amount greater than 0.01% by weight of the thermal ink jet ink composition. The additive is selected from fluorinated surfactants, ionic surfactants, and nonionic surfactants.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: March 29, 2016
    Assignee: Videojet Technologies Inc.
    Inventors: Anthony Selmeczy, Kyle Harvey, Casey Robertson, Linfang Zhu
  • Patent number: 9039822
    Abstract: Ceramic inkjet inks comprising ceramic inorganic pigments having average particle size between 0.1 and 0.8 ?m, an organic medium and a dispersant, the dispersant being the reaction product of a polyethyleneimine with a homo- or co-polyester based on lactic acid, and method for decorating green or fired ceramic bodies by the use of the above ceramic inkjet inks.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: May 26, 2015
    Assignee: LAMBERTI SPA
    Inventors: Dario Fornara, Alan Nappa, Tamara Verzotti, Paolo Prampolini, Stefano Crespi, Giovanni Floridi, Giuseppe Li Bassi
  • Patent number: 9034088
    Abstract: Method for decorating green or fired ceramic bodies by inkjet printing comprising the use of a ceramic inkjet ink which is prepared by milling a ceramic inorganic pigment in an organic medium in the presence of a dispersant which is the reaction product of a polyethyleneimine and a ricinoleic acid polyester, until the average particle size of the pigment is between 0.1 and 0.8 ?m.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: May 19, 2015
    Assignee: LAMBERTI SPA
    Inventors: Dario Fornara, Alan Nappa, Tamara Verzotti, Paolo Prampolini, Stefano Crespi, Giovanni Floridi, Giuseppe Li Bassi
  • Publication number: 20150125626
    Abstract: Various laser marking compositions and related methods are described. The laser marking compositions utilize one or more populations of particles having certain average particle sizes or a range of sizes. Marks or other indicia formed using the compositions and methods exhibit increased contrast, improved substrates bonding, and greater dispersability.
    Type: Application
    Filed: July 25, 2013
    Publication date: May 7, 2015
    Applicant: Ferro Corporation
    Inventors: George E. Sakoske, Joseph E. Sarver, Dennis R. Gilmore, Stephen Rozwood, Sean T. Weir
  • Publication number: 20150096465
    Abstract: A glass panel includes a first surface, and a second surface and wherein the first and second surfaces are spaced apart by thickness of the glass panel. A first image is printed on the first surface of the glass panel and a second image is printed on same first surface of the glass panel and at least partially overlapping the first image. The second image printed on the first surface and at least partially overlapping the first image forms at least partially opaque imbedded into the glass panel image that when covered by a fluid becomes transparent to reveal the first image printed on the second surface of the glass panel.
    Type: Application
    Filed: December 2, 2014
    Publication date: April 9, 2015
    Inventor: Andy SHIPWAY
  • Patent number: 8906464
    Abstract: The disclosure relates to printing mediums, useful for ceramic sinterable materials, that are in powder form and are based on glycols, urea and an inorganic absorbent, to ceramic inks compositions comprising the printing mediums and to methods for decorating green or fired ceramic bodies by the use of said printing mediums and compositions.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: December 9, 2014
    Assignee: Lamberti SpA
    Inventors: Paolo Prampolini, Alan Nappa, Giuseppe Li Bassi, Giovanni Floridi
  • Publication number: 20140044894
    Abstract: Anti-slip, ink jet inks and a glass panel having the anti-slip ink printed thereon.
    Type: Application
    Filed: July 11, 2013
    Publication date: February 13, 2014
    Applicant: DIP-TECH LTD.
    Inventor: Andy SHIPWAY
  • Publication number: 20140044893
    Abstract: A glass panel includes a first surface, and a second surface and wherein the first and second surfaces are spaced apart by thickness of the glass panel. A first image is printed on the first surface of the glass panel and a second image is printed on same first surface of the glass panel and at least partially overlapping the first image. The second image printed on the first surface and at least partially overlapping the first image forms at least partially opaque imbedded into the glass panel image that when covered by a fluid becomes transparent to reveal the first image printed on the second surface of the glass panel.
    Type: Application
    Filed: July 11, 2013
    Publication date: February 13, 2014
    Applicant: DIP-TECH LTD.
    Inventor: Andy SHIPWAY
  • Patent number: 8591639
    Abstract: Ceramic inks comprising ceramic pigments dispersed in vehicles based on water and glycols and containing urea, and method for decorating green or fired ceramic bodies by the use of said inks.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: November 26, 2013
    Assignee: Lamberti SpA
    Inventors: Stefano Crespi, Alan Nappa, Paolo Prampolini, Giuseppe Li Bassi
  • Patent number: 8377186
    Abstract: A temporary aqueous aerosol paint composition comprising an aqueous paint component, including an aqueous solvent, and an aqueous propellant component. At least one embodiment of the composition includes an amount of water as the aqueous solvent. The composition is formulated to minimize and/or eliminate the hazards presented by various volatile and non-volatile organic compounds present in known aerosol paint compositions, by eliminating or minimizing inclusion of such organic compounds. Further, the composition is developed to facilitate enhanced degradation in a short period of time, while also including elements to increase the performance when in use. A variety of pigment compounds may be used in the composition, permitting a variety of applications. The present invention is also directed to a method for preparing the temporary aqueous aerosol paint composition. This method includes adding the compounds to a reaction vessel and mixing thoroughly via a plurality of addition steps and mixing cycles.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: February 19, 2013
    Assignee: EZ Paint, Inc.
    Inventors: Arthur Coello, Carlos Vega Velazquez
  • Patent number: 7935183
    Abstract: A temporary aqueous aerosol paint composition comprising an aqueous paint component, including an aqueous solvent, and an aqueous propellant component. At least one embodiment of the composition includes an amount of water as the aqueous solvent. The composition is formulated to minimize and/or eliminate the hazards presented by various volatile and non-volatile organic compounds present in known aerosol paint compositions, by eliminating or minimizing inclusion of such organic compounds. Further, the composition is developed to facilitate enhanced degradation in a short period of time, while also including elements to increase the performance when in use. A variety of pigment compounds may be used in the composition, permitting a variety of applications. The present invention is also directed to a method for preparing the temporary aqueous aerosol paint composition. This method includes adding the compounds to a reaction vessel and mixing thoroughly via a plurality of addition steps and mixing cycles.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: May 3, 2011
    Assignee: EZ Paint, Inc.
    Inventors: Arthur Coello, Carlos Vega Velazquez
  • Patent number: 7691190
    Abstract: A method is shown for retarding the reactivity of quicklime. The quicklime is contacted with an aqueous solution of a boron-containing compound after being calcined. The boron-containing solution can be sprayed on the quicklime as it moves past on a conveyor belt. The retarded quicklime can be used for various industrial purposes and is especially useful as a reactant in a glass making operation.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: April 6, 2010
    Assignee: Chemical Lime Company
    Inventors: Kevin D. Ingram, Fred R. Huege
  • Patent number: 7666818
    Abstract: A combinatorial library includes a gelcast substrate defining a plurality of cavities in at least one surface thereof; and a plurality of gelcast test materials in the cavities, at least two of the test materials differing from the substrate in at least one compositional characteristic, the two test materials differing from each other in at least one compositional characteristic.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: February 23, 2010
    Assignee: UT-Battelle, LLC
    Inventors: Robert J. Lauf, Claudia A. Walls, Lynn A. Boatner
  • Publication number: 20090214840
    Abstract: The invention relates to an ink-jet ink composition for printing on a ceramic substrate comprising: (a) a liquid vehicle; (b) sub-micron particles of binding composition having a melting point below 6000 C; and (c) sub-micron particles causing an etch-like effect, said sub-micron particles are selected from metal oxide particles, high melting point frit particles, and a combination thereof, said sub-micron particles causing an etch-like effect have a melting point of at least 500 C above the melting point of said sub-micron particles of binding composition. The invention further relates to a printing process using such ink and to a ceramic substrate printed with a pattern or image having an etch-like effect, by means of the printing process.
    Type: Application
    Filed: September 28, 2006
    Publication date: August 27, 2009
    Inventors: Gera Eron, Avi Feinschmidt, Shlomo Magdassi, Yelena Vinetsky, Eliane Liraz
  • Patent number: 7540907
    Abstract: A method for preparing a temporary aqueous aerosol paint composition includes adding the various compounds to a reaction vessel in which a plurality of mixing cycles are accomplished. The temporary aqueous aerosol paint composition comprises an aqueous paint component, including an aqueous solvent, and an aqueous propellant component. The temporary aerosol paint composition is formulated to minimize and/or eliminate the hazards presented by the various volatile and non-volatile organic compounds present in known aerosol paint compositions, by eliminating or minimizing the inclusion of such organic compounds. Any one of a number of pigment compounds may be utilized in the temporary aqueous aerosol paint composition, including fluorescent colored pigment compounds, thereby permitting use in a variety of applications.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: June 2, 2009
    Inventors: Arthur Coello, Carlos Vega Velazquez
  • Publication number: 20080210122
    Abstract: The present invention concerns ink for printing on ceramic surfaces such as glass, which contains glass frits for silica nanoparticles and optionally a pigment, and is suitable for ink jet printing.
    Type: Application
    Filed: August 24, 2004
    Publication date: September 4, 2008
    Applicants: DIP Tech. Ltd., Yissum Research Development Company of the Hebrew University of Jerusalem
    Inventors: Shlomo Magdassi, Gera Eron, Yelena Vinetsky
  • Publication number: 20080053333
    Abstract: A system, method, and ink for printing a data carrying mark on a green ceramic honeycomb structure is provided. The system includes a printer having an ink jet print head that prints a mark, preferably in the form of a two-dimensional data matrix barcode, on a side wall of the green ceramic honeycomb structure. The ink may be a heat resistant ink that comprises a mixture of a glass or glass ceramic frit and a metal oxide colorant. An optical reader is provided for determining if the data is accurately reproduced in the printed mark, as well as any noise factor which may be present due to defective printing. The system includes a turntable that positions the green body for the printing operation, and then rotates the green body to position the printed mark first in front of a dryer, and then in front of the optical reader to determine the quality of the mark. Marked green and ceramic honeycombs are also provided as well as a method for repairing a defective applied bar code on a honeycomb structure.
    Type: Application
    Filed: April 2, 2007
    Publication date: March 6, 2008
    Inventors: L Urdenis Johnson, Lisa Ann Lamberson, Robert Michael Morena
  • Patent number: 6797047
    Abstract: A high temperature resistant marking agent includes a small number of inexpensive pro-analysis chemicals. The chemicals are dissolved into precise mass parts in distilled water and can be applied, for example, using of a stamp, a paint brush or a fibre tip pen. The marking agent can be used, for example, to mark the bricks of a combustion chamber.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: September 28, 2004
    Assignee: Siemens Aktiengesellschaft
    Inventor: Vincentius Hartanto
  • Patent number: 6682810
    Abstract: According to one aspect of the present invention there is provided a coating material comprising: a functional coating component; and a fluorescent additive component whose fluorescence is substantially unquenched by the coating component, the fluorescent additive component having a peak fluorescence emission under excitation by visible or infrared light, the wavelength of that peak fluorescence emission being greater than 500 nm and lying outside the principal fluorescence absorption and emission wavelengths of the coating component.
    Type: Grant
    Filed: March 16, 2000
    Date of Patent: January 27, 2004
    Assignee: Heriot-Watt University
    Inventors: Anita Claire Jones, James Stephen Barton, Jolyon Mark De Freitas, Julian David Clayton Jones, Philip Norman Spencer, Guy John Gregory
  • Patent number: 6645556
    Abstract: A process for marking a glass body (14), by depositing directly onto the outer surface of the glass body (14), in a form representing the motif of the mark, a marking product (10) made from a substantially homogenous mixture of an ink and a silica powder, and heating the glass body (14) at a temperature sufficient to result in vitrification of the marking product (10).
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: November 11, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Eric Gueusquin
  • Patent number: 6599647
    Abstract: Alumina cement mortar is used as a source material for a kneaded cement cured body for joining hardware onto an insulator body, whereby the insulator can maintain high initial and long term mechanical strength and high electrical strength over a long period of time, and the curing time for forming the cured body is shortened to reduce the cost of producing the insulator. The alumina cement mortar is formed by kneading a mixture of alumina cement particles having a specific surface area of at least 3500 cm2/g, a polymer-steric-hindrance type water reducing agent, an aggregate, and water, or an alumina cement mortar is obtained by kneading a mixture of alumina cement particles having an amorphous phase on an outer peripheral surface of particles and having a specific surface area of at least 3500 cm2/g, a water reducing agent, an aggregate, and water.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: July 29, 2003
    Assignee: NGK Insulators, Ltd.
    Inventors: Noriyasu Oguri, Osamu Imai, Hironori Suzuki
  • Publication number: 20030101899
    Abstract: The invention relates to a high temperature resistant marking agent comprising a small number of inexpensive pro-analysis chemicals. Said chemicals are dissolved into precise mass parts in distilled water and can be applied, for example, by means of a stamp, a paint brush or a fibre tip pen. The marking agent can be used, for example, to mark the bricks of a combustion chamber.
    Type: Application
    Filed: October 29, 2002
    Publication date: June 5, 2003
    Inventor: Vincentius Hartanto
  • Publication number: 20030017260
    Abstract: A composition for a fluorescent marking paste or paint that is non-toxic, water soluble, clear drying and safe for nonporous surfaces is disclosed. The invention is composed of a generic white school paste or any other water soluble, non-toxic, clear drying paste or cement to which non-toxic fluorescent or phosphorescent colorant particles and water are added. The consistency of the resultant mixture is either a paste for making an impression or a paint for applying to a non-porous object using a brush, and the paste or paint, when dry, is clearly visible under UV light. Unique identifying marks such as identifying stamps, actual fingerprints, or numbers may be placed on any nonporous object that can be safely cleaned with a damp cloth. This invention provides a safe marking system for allowing e-commerce sellers to prevent buyer fraud or for allowing owners to identify possessions for inventory and insurance purposes.
    Type: Application
    Filed: July 18, 2002
    Publication date: January 23, 2003
    Inventor: Paula B. Pendergrass
  • Patent number: 6464765
    Abstract: The present invention provides a slurry for use in decorating a ceramic substrate. The slurry according to the invention includes solid particles of at least one color-contributing metal salt dispersed in a saturated solution of at least one color-contributing metal salt, and has a viscosity of from about 10 to about 20,000 centipoise. Preferably, the solid particles have a diameter of less than about 40 microns. The present invention also provides a method of decorating a surface of a ceramic substrate. The method according to the invention includes applying a slurry that includes solid particles of at least one color-contributing metal salt dispersed in a saturated solution of at least one color-contributing metal salt having a viscosity of from about 10 to about 20,000 centipoise to a ceramic substrate, applying a solvent to the ceramic substrate in amount sufficient to at least partially dissolve the solid particles, and firing the ceramic substrate.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: October 15, 2002
    Assignee: Ferro Corporation
    Inventors: Carlos Benet Garcia, Javier Garcia Sainz
  • Patent number: 6443996
    Abstract: A decorative dye colorant for use on various types of natural stone, such as granite, marble, limestone, and soapstone. The colorant is formed by mixing a solvent soluble dye with a suitable solvent, such as a ketone or an alcohol to form a dye solution. The solvent enables the dye to penetrate easily into the pores or openings located in the surface of the stone to color the stone so as not to mar the appearance of the surface of the stone. The dye is resistant to removal or discoloration, but may be removed by extended contact of certain chemicals with the dye. To permanently prevent the removal of the dye, a sealer is applied over the dye to prevent any such materials from contacting the dye. The sealer is comprised of an aliphatic urethane mixed with the alcohol xylol that also includes ultraviolet light resistant properties to prevent the dye from fading over time.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: September 3, 2002
    Inventors: Maurice W. Mihelich, Diane M. Mihelich
  • Patent number: 6413619
    Abstract: According to the present invention, there is provided a method of marking a ceramic member, which comprises firing, in an atmosphere, a ceramic green body containing at least 0.05% by weight of a color changing agent capable of developing different color tones by heating in different atmospheres, and heating a specific portion of the resulting sintered body in the other atmosphere to form a marking portion whose color tone is different from that of the other portion, and a marked ceramic member, thereby making it possible to easily form a mark having excellent visibility in a short time without increasing the number of processes.
    Type: Grant
    Filed: July 28, 2000
    Date of Patent: July 2, 2002
    Assignee: Kyocera Corporation
    Inventors: Noriaki Hamada, Youji Furukubo