Patents by Inventor H. Bruce Goodbrand
H. Bruce Goodbrand 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: 5874193Abstract: A photoconductive imaging member comprised of a supporting substrate, a hole blocking layer thereover, a photogenerating layer and a charge transport layer, and wherein the hole blocking layer is comprised of a crosslinked siloxane polymer schematically represented by ##STR1## wherein A, B, and C are the repeating units on the polymer backbone; D and E are divalent linkages; R' and P" are selected from the group consisting of hydrogen, fluorine, chlorine, bromine, iodine, cyano, nitro, alkyl, alkoxy, acyl, alkoxycarbonyl, and aryloxycarbonyl; and x, y, and z are the molar fractions of the repeating monomer units such that the sum of x+y+z equal to about 1.Type: GrantFiled: July 30, 1998Date of Patent: February 23, 1999Assignee: Xerox CorporationInventors: Ping Liu, Nan-Xing Hu, H. Bruce Goodbrand, Cheng-Kuo Hsiao, Beng S. Ong
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Patent number: 5723671Abstract: A process for the preparation of N,N-bis(3,4-dimethylphenyl)-4-biphenylamine which comprises the reaction of an aminobiphenyl and an iodoxylene in the presence of a ligand copper catalyst, and wherein the ligand is selected from the group consisting of monodentate tertiary amines and bidentate tertiary amines, and which reaction is accomplished at a temperature of from about 120.degree. C. to about 150.degree. C.Type: GrantFiled: January 30, 1997Date of Patent: March 3, 1998Assignee: Xerox CorporationInventors: H. Bruce Goodbrand, Nan-Xing Hu, Beng S. Ong
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Patent number: 5723669Abstract: A process preparation of N,N-bis(3,4-dimethylphenyl)-4-biphenylamine which comprises the reaction of N,N-bis(3,4-dimethylphenyl)amine and an iodobiphenyl in the presence of a ligand copper catalyst, and wherein the ligand is selected from the group consisting of monodentate tertiary amines and bidentate tertiary amines, and which reaction is accomplished at a temperature of from about 120.degree. C. to about 150.degree. C.Type: GrantFiled: January 30, 1997Date of Patent: March 3, 1998Assignee: Xerox CorporationInventors: H. Bruce Goodbrand, Nan-Xing Hu, Beng S. Ong
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Patent number: 5709737Abstract: Disclosed is an ink composition which comprises an aqueous liquid vehicle, a colorant, and an additive material selected from the group consisting of (a) symmetric acetylenic bisester alcohols, (b) symmetric acetylenic bisalkyl alcohols and acetylenic bisalkoxy alcohols, (c) symmetric acetylenic bisamido alcohols, (d) symmetric bisamido alcohols, (e) mono amido alcohols, (f) trialkylhydroxy compounds, (g) derivatives of 1,2-diols and 1,3-diols, (h) thio diols, (i) aromatic diols, (j) heterocyclic diols, (k) imino alcohols, (l) salts of hydroxyl compounds, (m) saccharides and saccharide derivatives, and (n) mixtures thereof. Also disclosed is an ink jet process which comprises (1) incorporating into a thermal ink jet printing apparatus the aforementioned ink composition; and (2) causing droplets of the ink to be ejected from the printing apparatus in an imagewise pattern onto a substrate, thereby generating images on the substrate.Type: GrantFiled: February 20, 1996Date of Patent: January 20, 1998Assignee: Xerox CorporationInventors: Shadi L. Malhotra, Kirit N. Naik, David N. MacKinnon, James D. Mayo, Yvan Gagnon, H. Bruce Goodbrand
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Patent number: 5705697Abstract: A process for the preparation of N,N-bis(3,4-dimethylphenyl)-4-biphenylamine which comprises the reaction of N-(3,4-dimethylphenyl)-4-biphenylamine and an iodoxylene in the presence of a ligated copper catalyst, and wherein the ligand is selected from the group consisting of monodentate tertiary amines and bidentate tertiary amines, and which reaction is accomplished at a temperature of from about 120.degree. C. to about 150.degree. C.Type: GrantFiled: January 30, 1997Date of Patent: January 6, 1998Assignee: Xerox CorporationInventors: H. Bruce Goodbrand, Nan-Xing Hu, Beng S. Ong
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Patent number: 5654482Abstract: An Ullmann condensation process for the preparation of triarylamines which comprises the reaction of an aniline and a halobenzene in the presence of a an organic solvent, an alkali metal hydroxide, a ligated copper catalyst and wherein the ligand is selected from the group consisting of monodentate tertiary amines and bidentate tertiary amines, and which reaction is accomplished at a temperature of from about 120.degree. to about 135.degree. C.Type: GrantFiled: February 29, 1996Date of Patent: August 5, 1997Assignee: Xerox CorporationInventor: H. Bruce Goodbrand
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Patent number: 5648542Abstract: A process for the preparation of triarylamines which comprises the reaction of an aniline and a haloaromatic component in the presence of a ligand copper catalyst, and wherein the ligand is selected from the group consisting of monodentate tertiary amines and bidentate tertiary amines, and which reaction is accomplished at a temperature of from about 120.degree. C. to about 150.degree. C.Type: GrantFiled: February 29, 1996Date of Patent: July 15, 1997Assignee: Xerox CorporationInventors: H. Bruce Goodbrand, Liqin Chen, Dale S. Renfer
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Patent number: 5648539Abstract: A process for the preparation of arylamines which comprises the reaction of methyldiphenylamine and diiodobiphenyl in the presence of a ligated copper catalyst, and wherein the ligand is selected from the group consisting of monodentate tertiary amines and bidentate tertiary amines, and which reaction is accomplished at a temperature of from about 120.degree. C. to about 150.degree. C.Type: GrantFiled: February 29, 1996Date of Patent: July 15, 1997Assignee: Xerox CorporationInventor: H. Bruce Goodbrand
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Patent number: 5554480Abstract: A process for the preparation of fluorescent toner compositions comprising(i) preparing a pigment dispersion in a solvent, which dispersion is comprised of a pigment or dye, an ionic surfactant and optionally a charge control agent;(ii) shearing the pigment dispersion with a latex mixture comprised of a counterionic surfactant with a charge polarity of opposite sign to that of said ionic surfactant, a nonionic surfactant and resin particles, thereby causing a flocculation or heterocoagulation of pigment, resin particles and charge control agent to form electrostatically bound toner size aggregates; and(iii) heating the statically bound aggregated particles to form said toner composition comprised of polymeric resin, pigment and optionally a charge control agent, and wherein the pigment or dye is excitable by ultraviolet light in the frequency range of from about 254 to about 366 nanometers and fluoresces in the visible spectrum of from about 400 to about 700 nanometers.Type: GrantFiled: September 1, 1994Date of Patent: September 10, 1996Assignee: Xerox CorporationInventors: Raj D. Patel, H. Bruce Goodbrand, Grazyna E. Kmiecik-Lawrynowicz, Michael A. Hopper, Melvin D. Croucher, James M. Duff
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Patent number: 5538829Abstract: A negatively charged toner composition comprised of a polymer resin or polymer resins, colorants comprised of pigment particles and/or dyes, optional surface additives, and a boron charge enhancing additive obtained from the reaction of an alkylboric acid or an arylboric acid and an N-alkyl- or N-aryl-substituted bis(hydroxyalkyl)amine, or a zinc charge enhancing additive obtained from the reaction of an aromatic carboxylic acid and an N-alkyl- or N-aryl-substituted bis(hydroxyalkyl)amine with a zinc ion-containing compound in aqueous medium.Type: GrantFiled: September 5, 1995Date of Patent: July 23, 1996Assignee: Xerox CorporationInventors: Beng S. Ong, H. Bruce Goodbrand
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Patent number: 5527658Abstract: A process for the preparation of toner comprising:(i) preparing a pigment dispersion comprised of pigment, an ionic surfactant, and optionally a charge control agent;(ii) shearing said pigment dispersion with a latex comprised of resin, a counterionic surfactant with a charge polarity of opposite sign to that of said ionic surfactant, and a nonionic surfactant;(iii) heating the above sheared blend of (ii) about below the glass transition temperature (Tg) of the resin, to form electrostatically bound toner size aggregates with a volume average diameter of from between about 2 and about 15 microns and with a narrow particle size distribution as reflected in the particle diameter GSD of between about 1.15 and about 1.30, followed by the addition of a water insoluble transition metal containing powder ionic surfactant in an amount of from between about 0.05 and about 5 weight percent based on the weight of the aggregates; and(iv) heating said bound aggregates about above the Tg of the resin to form toner.Type: GrantFiled: March 13, 1995Date of Patent: June 18, 1996Assignee: Xerox CorporationInventors: Michael A. Hopper, Raj D. Patel, H. Bruce Goodbrand, Grazyna E. Kmiecik-Lawrynowicz
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Patent number: 5389134Abstract: Disclosed is an ink composition which comprises water, a colorant, and a compound of the formula ##STR1## wherein A.sup.1, A.sup.2, A.sup.3, B.sup.1, B.sup.2, and B.sup.3 each, independently of each other, are linear alkenyl groups, A.sup.1, A.sup.2, A.sup.3, B.sup.1, B.sup.2, and B.sup.3 each, independently of each other, are either unsubstituted or substituted with alkyl groups, m, n, and p each, independently of each other, are integers of from 0 to about 10, and R.sup.1, R.sup.2, and R.sup.3 each, independently of each other, are hydrogen, alkyl groups, cycloalkyl groups, phenyl groups, or alkylphenyl groups.Type: GrantFiled: July 18, 1994Date of Patent: February 14, 1995Assignee: Xerox CorporationInventors: Marcel P. Breton, Barbel McGibbon, H. Bruce Goodbrand
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Patent number: 5385803Abstract: A process for the authentication of documents which comprises generating developed documents in an electophotographic apparatus, or in a laser printer with an encapsulated toner comprised of a core comprised of polymer, an optional pigment, and an infrared emitting component, and thereover a polymeric shell; and subjecting the document to an infrared reader whereby the infrared component is detected spectroscopically.Type: GrantFiled: January 4, 1993Date of Patent: January 31, 1995Assignee: Xerox CorporationInventors: James M. Duff, H. Bruce Goodbrand, David L. Hecht
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Patent number: 5308363Abstract: A process for the preparation of a quaternary ammonium bisulfate which comprises the reaction of a quaternary ammonium alkylsulfate with sulfuric acid in a solvent mixture comprised of water and isopropyl alcohol, followed by the recovery of the solid quaternary ammonium bisulfate by crystallization from the reaction mixture.Type: GrantFiled: February 18, 1992Date of Patent: May 3, 1994Assignee: Xerox CorporationInventors: George Liebermann, H. Bruce Goodbrand, John L. Haack, John Abate
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Patent number: 5208630Abstract: A process for the authentication of documents which comprises generating developed documents in an electophotographic apparatus, or in a laser printer, with an encapsulated toner comprised of a core comprised of polymer, pigment, and an infrared absorbing component, and thereover a polymeric shell; and subjecting the document to an infrared reader whereby the near infrared absorbing component is detected spectroscopically.Type: GrantFiled: November 4, 1991Date of Patent: May 4, 1993Assignee: Xerox CorporationInventors: H. Bruce Goodbrand, James M. Duff, Raymond W. Wong