Patents by Inventor Hiang P Lauw
Hiang P Lauw has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8147602Abstract: A dye-based ink includes a dye and a solvent. The dye-based ink has a high print quality on plain paper. The dye-based ink may have a print quality similar to pigment-based inks. This may be particularly relevant for black inks.Type: GrantFiled: January 7, 2010Date of Patent: April 3, 2012Assignee: Hewlett-Packard Development Company, L.P.Inventors: Hiang P Lauw, Linda C. Uhlir-Tsang, John R Moffatt
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Patent number: 7833335Abstract: Ink-jet sets, printer systems, methods of printing, and printing materials are disclosed.Type: GrantFiled: April 12, 2007Date of Patent: November 16, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventors: Matthew Thornberry, Hiang P. Lauw, Raymond Adamic, James P. Shields
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Publication number: 20100112222Abstract: A dye-based ink includes a dye and a solvent. The dye-based ink has a high print quality on plain paper. The dye-based ink may have a print quality similar to pigment-based inks. This may be particularly relevant for black inks.Type: ApplicationFiled: January 7, 2010Publication date: May 6, 2010Inventors: Hiang P. Lauw, Linda C. Uhlir-Tsang, John R. Moffatt
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Patent number: 7674328Abstract: A dye-based ink includes a dye and a solvent. The dye-based ink has a high print quality on plain paper. The dye-based ink may have a print quality similar to pigment-based inks. This may be particularly relevant for black inks.Type: GrantFiled: March 3, 2005Date of Patent: March 9, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventors: Hiang P Lauw, Linda C. Uhlir-Tsang, John R Moffatt
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Patent number: 7666255Abstract: Compositions and methods for ink-jet printing having increased slewing decap time and reduced clogging are disclosed and described. An ink-jet ink composition can include a colorant and a liquid vehicle having a surfactant. The surfactant can have a critical micelle concentration with respect to the ink-jet ink composition. In addition, the surfactant can be present in the ink-jet ink composition at a concentration from about 0.4 to about 0.95 times the critical micelle concentration. Further, the surfactant can also have an aromatic-containing portion. Using the ink-jet inks of the present invention during printing can allow for reduced clogging and increased stewing decap time during ink-jet printing on a variety of substrates with improved reliability, faster printing, and more efficient use of the ink.Type: GrantFiled: March 9, 2005Date of Patent: February 23, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventors: Hiang P Lauw, Tye Dodge
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Publication number: 20080252681Abstract: Ink-jet sets, printer systems, methods of printing, and printing materials are disclosed.Type: ApplicationFiled: April 12, 2007Publication date: October 16, 2008Inventors: Matthew Thornberry, Hiang P. Lauw, Raymond Adamic, James P. Shields
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Patent number: 7332023Abstract: Disclosed is an ink composition that includes a colorant; a water-soluble organic solvent; and a penetrant, where the penetrant may be a hydroxylated pentane. Also disclosed is an ink composition that includes a penetrant that enables the ink composition to maintain a drop weight of at least about 4.5 ng at high operating frequencies of an ink drop generator of the ink-jet printer.Type: GrantFiled: March 7, 2005Date of Patent: February 19, 2008Assignee: Hewlett-Packard Development Company, L.P.Inventors: Zia Ur Rehman, Jules G. Moritz, Arun K. Agarwal, Hiang P. Lauw
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Patent number: 7264662Abstract: The present invention is drawn to ink sets ink-jet imaging, including ink sets having six ink-jet inks. In one embodiment, the ink set can comprise a black ink including a first organic solvent system, a cyan ink including a second organic solvent system, a magenta ink including a third organic solvent system, and a yellow ink including a fourth organic solvent system. In this embodiment, at least two of the organic solvent systems are different. The first organic solvent system can include a first organic solvent and a second organic solvent. The second and third organic solvent systems can include the first organic solvent and a third organic solvent. The fourth organic solvent system can include the second organic solvent and a fourth organic solvent. These solvent systems, and others, can also be used to prepare various dye sets that are dye specific.Type: GrantFiled: March 9, 2005Date of Patent: September 4, 2007Assignee: Hewlett-Packard Development Company, L.P.Inventors: Tye Dodge, Hiang P Lauw, Linda C. Uhlir-Tsang, Mary E Austin, Zia Rehman, Matthew Thornberry
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Patent number: 7247195Abstract: The present invention is drawn to dye sets for formulating ink-jet inks, including ink sets having six ink-jet inks. In one embodiment, the dye set can comprise a yellow dye for formulating a yellow ink, a pair of magenta dyes for formulating a magenta ink and a pale magenta ink, a pair of cyan dyes for formulating a cyan ink and a pale cyan ink, and a black dye for formulating a black ink-jet ink. The pair of magenta dyes can be a transition metal-containing azo dye and a non-metallized dye. The pair of cyan dyes can be a first copper phthalocyanine dye and a second copper phthalocyanine dye that is different than the first copper phthalocyanine dye.Type: GrantFiled: March 9, 2005Date of Patent: July 24, 2007Assignee: Hewlett-Packard Development Company, L.P.Inventors: Tye Dodge, Linda C. Uhlir-Tsang, Hiang P Lauw, Matthew Thornberry
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Patent number: 6986572Abstract: The inks provide excellent ink-jet prints having excellent imaging onto the media with sharp, smooth edge text print and overall print quality improvements. The aqueous inks each comprise an anionic colorant (CMYK), a short chain alcohol or diol and a cationic surfactant.Type: GrantFiled: July 30, 2002Date of Patent: January 17, 2006Assignee: Hewlett-Packard Development Company, L.P.Inventors: Hiang P Lauw, John R Moffatt
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Publication number: 20040021752Abstract: The inks provide excellent ink-jet prints having excellent imaging onto the media with sharp, smooth edge text print and overall print quality improvements. The aqueous inks each comprise an anionic colorant (CMYK), a short chain alcohol or diol and a cationic surfactant.Type: ApplicationFiled: July 30, 2002Publication date: February 5, 2004Inventors: Hiang P. Lauw, John R. Moffatt
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Patent number: 6652636Abstract: The novel phthalocyanine cyan dye of the formula (I) in which M represents an ion of a metal selected from the group consisting of Cu, Fe, Co, Mg, Mn, Sn and Ni, X represents a linear compound having 6-10 atoms in length containing C, O, and/or N, R1 represents pyridine, imidazole, sulfide, thiol, phenol, benzene, benzaldehyde, pyrimidine, pyrizine, triazine, thiazole, oxazole, pyridone, pyrone, pyrole, thiophene, furan, pyran, dioxane, and morpholine, and derivatives thereof, R2 represents an atom or chemical group that imparts water solubility to the phthalocyanine cyan dye, and y and z each independently represent an integer of 1 to 3 satisfying the relation of 2≦y+z≦4. Ink formulations containing at least one dye of the formula (I) and methods for ink jet printing with inks containing the phthalocyanine cyan dyes of formula (I).Type: GrantFiled: June 29, 2001Date of Patent: November 25, 2003Assignee: Hewlett-Packard Development Company, L.P.Inventors: Larrie A Deardurff, Hiang P Lauw
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Patent number: 6607589Abstract: An aqueous inkjet ink and an ink set using such ink, the ink comprising as colorant, a Copper Phthalocyanine (CuPc) dye compound having formula II: wherein (x,y,z)=4.Type: GrantFiled: April 17, 2001Date of Patent: August 19, 2003Assignee: Hewlett-Packard Development Company, L.P.Inventors: Raymond J Adamic, Richard A Sader, Gary W Byers, Paul J. Bruinsma, Howard A. Doumaux, Kai Kong Iu, Richard Anderson, Hiang P Lauw
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Publication number: 20030127019Abstract: An aqueous inkjet ink and an inkset using such ink, the ink comprising as colorant, a Copper Phthalocyanine (CuPc) dye compound having formula II: 1Type: ApplicationFiled: April 17, 2001Publication date: July 10, 2003Inventors: Raymond J. Adamic, Richard A. Sader, Gary W. Byers, Paul J. Bruinsma, Howard A. Doumaux, Kai Kong Iu, Richard Anderson, Hiang P. Lauw
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Patent number: 6540821Abstract: Color ink sets for use in printer systems are provided and formulated to provide improved plain paper and special media performance while maintaining good printing characteristics. The inks and ink sets of the present invention exhibit excellent color performance and lightfastness across a range of media, robust K/Y bleed resistance on plain paper at fast print speeds, as well as excellent printability and reliability. A specific dye set for formulating yellow, magenta, and cyan inks comprises a mixture of acid yellow 23 (AY23) and direct yellow 132 (DY132), a mixture of a cyan dye compound having the formula: —(SO3H)2.7 CuPc—(SO2NH2)0.5 —(SO2NH(C2H4OH)0.8 wherein Pc represents a phthalocyanine nucleus and acid blue 9; and a magenta dye compound having formula: wherein Q is a cation.Type: GrantFiled: May 4, 2001Date of Patent: April 1, 2003Assignee: Hewlett-Packard CompanyInventors: Raymond J Adamic, Mary E Austin, Hiang P Lauw, Dennis P Parazak, Zia Rehman
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Publication number: 20030041775Abstract: The novel phthalocyanine cyan dye of the formula (I) 1Type: ApplicationFiled: June 29, 2001Publication date: March 6, 2003Inventors: Larrie A. Deardurff, Hiang P. Lauw
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Publication number: 20030015120Abstract: Color ink sets for use in printer systems are provided and formulated to provide improved plain paper and special media performance while maintaining good printing characteristics. The inks and ink sets of the present invention exhibit excellent color performance and lightfastness across a range of media, robust K/Y bleed resistance on plain paper at fast print speeds, as well as excellent printability and reliability.Type: ApplicationFiled: May 4, 2001Publication date: January 23, 2003Inventors: Raymond J. Adamic, Mary E. Austin, Hiang P. Lauw, Dennis P. Parazak, Zia Rehman
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Patent number: 6419353Abstract: Various ink formulations utilizing particular magenta dyes have excellent printing characteristics with high chroma and good lightfastness on plain paper and minimal humid bleed and hue shift on special media. The magenta humid bleed shift has been greatly reduced, especially on photo glossy materials. A single dye may be used in comparison to blended dyes which have been used in the past.Type: GrantFiled: March 2, 2001Date of Patent: July 16, 2002Assignee: Hewlett-Packard CompanyInventors: Raymond J Adamic, Hiang P Lauw
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Patent number: 6053969Abstract: In accordance with the invention inks suitable for use in ink-jet printers and method for using the same are provided. More particularly, inks comprising the present dye set exhibits excellent color performance and lightfastness across a range of media. Furthermore, the dye set enables good reliability in an environment having a relatively high concentration of precipitating agents. This reliability enables the use of precipitation bleed control mechanisms. More specifically, a specific dye set for formulating the yellow, magenta, and cyan inks is disclosed, comprising Acid Yellow 17 and a yellow dye according to Formula I; Acid Red 52 and a magenta dye according to Formula II; and Direct Blue 199 and Acid Blue 9; respectively.Type: GrantFiled: April 30, 1999Date of Patent: April 25, 2000Assignee: Hewlett-Packard CompanyInventors: Hiang P. Lauw, Mary E. Austin, Vladek P. Kasperchik
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Patent number: 5935309Abstract: An ink-jet ink composition for ink-jet printing and a method using the same is disclosed, the ink composition comprising an aqueous liquid vehicle, at least one zwitterionic surfactant; and at least one amphiphilic dye, said at least one amphiphilic dye comprising a plurality of amphiphilic dye molecules, each of said amphiphilic dye molecules consisting essentially of a chromophore and at least one hydrophobic arm attached thereto, said at least amphiphilic dye being present in said ink-jet ink composition in an amount that is at least equal to its critical micelle concentration. The ink compositions of the present invention provide enhanced waterfastness and optical density.Type: GrantFiled: April 20, 1998Date of Patent: August 10, 1999Assignee: Hewlett-Packard CompanyInventors: John R. Moffatt, Edward T. Bedford, Hiang P. Lauw