Patents by Inventor Roger E. Gaynor
Roger E. Gaynor 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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Publication number: 20080194814Abstract: Processes for making organic pigments useful in imaging members, specifically for pigments that after further polymorphic conversion may be used in a charge generating layer of an imaging member. More specifically, there are described processes for producing titanyl phthalocyanine (TiOPc) in high yields using tetrahydronaphthalene as reaction solvent, such as TiOPc Type I. This pigment can be successfully converted to a high sensitivity crystal form useful as charge generating pigment in an imaging member.Type: ApplicationFiled: February 13, 2007Publication date: August 14, 2008Applicant: Xerox CorporationInventors: Marko D. Saban, George Liebermann, Roger E. Gaynor, Sandra Gardner, Cuong Vong, Evelyn Juandi
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Publication number: 20080154062Abstract: A process including reacting a substituted or unsubstituted arylamine or a mixture thereof with a Vilsmeier reagent in the presence of a weakly polar liquid.Type: ApplicationFiled: March 10, 2008Publication date: June 26, 2008Inventors: Leanne D. Murphy, Roger E. Gaynor
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Patent number: 7365232Abstract: A process including reacting a substituted or unsubstituted arylamine or a mixture thereof with a Vilsmeier reagent in the presence of a weakly polar liquid.Type: GrantFiled: April 28, 2005Date of Patent: April 29, 2008Assignee: Xerox CorporationInventors: Leanne D. Murphy, Roger E. Gaynor
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Patent number: 7138555Abstract: The present invention provides a process for preparing monoiodinated aromatic compounds that are useful as intermediates for preparing charge transporting and hole transporting amino compounds and have high purity with high yield and at low cost. A process for preparing aryl iodide compounds comprises reacting an aryl halide compound with a metal iodide, a metal catalyst and a catalyst coordinating ligand in at least one solvent to form an aryl iodide; and purifying the aryl iodide. A triarylamine compound and a process for preparing a triarylamine compounds reacting the aryl iodide with a diarylamine is also provided. Further, a photoconductive imaging member comprising a charge transport layer that comprises at least one triarylamine compound prepared reacting the aryl iodide with a diarylamine is provided.Type: GrantFiled: April 20, 2004Date of Patent: November 21, 2006Assignee: Xerox CorporationInventors: H. Bruce Goodbrand, Timothy P. Bender, Roger E. Gaynor, Leanne Murphy
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Patent number: 6726755Abstract: Disclosed is a phase change ink composition comprising a phase change ink carrier and a colorant compound of the formula wherein M is an atom or group of atoms capable of bonding to the central cavity of a phthalocyanine molecule, wherein axial ligands optionally can be attached to M. Also disclosed are printing processes using the phase change inks.Type: GrantFiled: February 8, 2002Date of Patent: April 27, 2004Assignee: Xerox CorporationInventors: Donald R. Titterington, Michael B. Meinhardt, Jeffrey H. Banning, James D. Mayo, James M. Duff, Roger E. Gaynor, Harold R. Frame
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Patent number: 6696552Abstract: A process which comprises admixing in the absence of a solvent an amine of the formula R1—NH2 and a first ester of the formula wherein R2 is an electron withdrawing group and R3 is an alkyl group; heating the mixture containing the amine and the first ester to form an intermediate compound of the formula admixing the intermediate compound with a base and a second ester of the formula said second ester being present in a molar excess relative to the intermediate compound, said base being present in a molar excess relative to the intermediate compound, and heating the mixture to form a pyridone compound of the formula or a salt thereof. Also disclosed is a process for preparing diazopyridone colorants which comprises preparing a pyridone compound by the above process and reacting the pyridone compound with a diazonium salt to form a diazopyridone compound.Type: GrantFiled: June 27, 2002Date of Patent: February 24, 2004Assignee: Xerox CorporationInventors: James D. Mayo, James M. Duff, Rina Carlini, Roger E. Gaynor, George Liebermann
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Publication number: 20040006234Abstract: Disclosed is a process for preparing substituted pyridone compounds which comprises (a) admixing in the absence of a solvent (1) an amine of the formula R1—NH2 wherein R1 is an alkyl group, an aryl group, an arylalkyl group, or an alkylaryl group, and (2) a first ester of the formula 1Type: ApplicationFiled: June 27, 2002Publication date: January 8, 2004Applicant: Xerox CorporationInventors: James D. Mayo, James M. Duff, Rina Carlini, Roger E. Gaynor, George Liebermann
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Publication number: 20030172841Abstract: Disclosed is a phase change ink composition comprising a phase change ink carrier and a colorant compound of the formula 1Type: ApplicationFiled: February 8, 2002Publication date: September 18, 2003Applicant: Xerox CorporationInventors: Donald R. Titterington, Michael B. Meinhardt, Jeffrey H. Banning, James D. Mayo, James M. Duff, Roger E. Gaynor, Harold R. Frame
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Patent number: 6576748Abstract: Disclosed is a process for preparing a diazopyridone compound either (A) of the formula or (B) of the formula which comprises diazotizing a dianiline and coupling it with a pyridone or diazotizing an aniline and coupling it with a dipyridone.Type: GrantFiled: June 27, 2002Date of Patent: June 10, 2003Assignee: Xerox CorporationInventors: Rina Carlini, James D. Mayo, James M. Duff, Jeffrey H. Banning, Paul F. Smith, George Liebermann, Roger E. Gaynor
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Patent number: 6576747Abstract: Disclosed is a process for preparing dianthranilate compounds which comprises (a) admixing reactants as follows: (1) a diol of the formula R1(OH)2, wherein R1 is an alkylene group having at least about 20 carbon atoms, and wherein the —OH groups are primary or secondary, (2) isatoic anhydride, present in an amount of at least, about 2 moles of isatoic anhydride per every one mole of diol, (3) a catalyst which is 1,4-diazabicyclo [2.2.2]octane, N,N,N′,N′-tetramethylethylene diamine, or a mixture thereof, said catalyst being present in an amount of at least about 0.Type: GrantFiled: June 27, 2002Date of Patent: June 10, 2003Assignee: Xerox CorporationInventors: Rina Carlini, James M. Duff, Stephen G. Robinson, George Liebermann, Roger E. Gaynor, Tania Pereira, Jeffrey H. Banning, James D. Mayo
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Patent number: 6476219Abstract: Disclosed is a process for preparing a colorant of the formula wherein M is an atom or group of atoms capable of bonding to the central cavity of a phthalocyanine molecule, wherein axial ligands optionally can be attached to M, which comprises (a) reacting 3-n-pentadecylphenol with 4-nitrophthalonitrile in the presence of a base to form an alkylarylether adduct of phthalonitrile; and (b) reacting the alkylarylether adduct of phthalonitrile with either (i) a metal compound, or (ii) an ammonia-releasing compound in the presence of an alkanolamine solvent, or (iii) mixtures of (i) and (ii), to form the colorant.Type: GrantFiled: February 8, 2002Date of Patent: November 5, 2002Assignee: Xerox CorporationInventors: James M. Duff, James D. Mayo, Roger E. Gaynor, Jeffrey H. Banning, Michael B. Meinhardt, Randall R. Bridgeman, Nan-Xing Hu, Carol A. Jennings, Marko D. Saban, Paul F. Smith, Hadi K. Mahabadi
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Patent number: 6472523Abstract: Disclosed are compounds of the formula wherein M is an atom or group of atoms capable of bonding to the central cavity of a phthalocyanine molecule, wherein axial ligands optionally can be attached to M.Type: GrantFiled: February 8, 2002Date of Patent: October 29, 2002Assignee: Xerox CorporationInventors: Jeffrey H. Banning, Nan-Xing Hu, James D. Mayo, James M. Duff, Roger E. Gaynor, Rosa M. Duque, Nam S. Ro
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Patent number: 6464902Abstract: A process for the preparation of perylene mixtures comprised of at least two symmetrical perylene bisamide dimers of Formula 1 wherein R is hydrogen, alkyl, cycloalkyl, substituted alkyl, aryl, substituted aryl, aralkyl or substituted aralkyl, and at least one terminally unsymmetrical dimer of Formula 2 wherein R1 and R2 are hydrogen, alkyl, cycloalkyl, substituted alkyl, aryl, substituted aryl, aralkyl, or substituted aralkyl, and wherein R1 and R2 are dissimilar, which process comprises the condensation of a mixture of at least two perylene monoimide-monoanhydrides of Formula 3 with a diamine wherein R is hydrogen, alkyl, cycloalkyl, substituted alkyl, aryl, substituted aryl, aralkyl, and substituted aralkyl, with a 1,3-diaminopropane.Type: GrantFiled: May 25, 2000Date of Patent: October 15, 2002Assignee: Xerox CorporationInventors: Roger E. Gaynor, James M. Duff, C. Geoffrey Allen, Gordon K. Hamer, Ah-Mee Hor
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Patent number: 6403796Abstract: A photoconductive imaging member comprised of an unsymmetrical perylene of the formula wherein each R1 and R2 are dissimilar and wherein the R1 and R2 are hydrogen, alkyl, cycloalkyl, substituted alkyl, aryl, substituted aryl, aralkyl, and substituted aralkyl, and X represents a symmetrical bridging component, and y represents the number of X components.Type: GrantFiled: September 28, 2000Date of Patent: June 11, 2002Assignee: Xerox CorporationInventors: James M. Duff, C. Geoffrey Allen, Ah-Mee Hor, Roger E. Gaynor
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Patent number: 6287738Abstract: A photoconductive imaging member comprised of a mixture of at least two symmetrical perylene bisimide dimers of Formula 1 Formula 1 wherein R is hydrogen, alkyl, cycloalkyl, substituted alkyl, aryl, substituted aryl, aralkyl or substituted aralkyl, and at least one terminally unsymmetrical dimer of Formula 2 Formula 2 wherein R1 and R2 are hydrogen, alkyl, cycloalkyl, substituted alkyl, aryl, substituted aryl, aralkyl, or substituted aralkyl, and wherein R1 and R2 are dissimilar.Type: GrantFiled: May 25, 2000Date of Patent: September 11, 2001Assignee: Xerox CorporationInventors: James M. Duff, Ah-Mee Hor, C. Geoffrey Allen, Roger E. Gaynor, Cheng-Kuo Hsiao
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Patent number: 6162571Abstract: A photoconductive imaging member comprised of an unsymmetrical perylene of the formula ##STR1## wherein each R.sub.1 and R.sub.2 are dissimilar and wherein the R.sub.1 and R.sub.2 are hydrogen, alkyl, cycloalkyl, substituted alkyl, aryl, substituted aryl, aralkyl, and substituted aralkyl, and X represents a symmetrical bridging component, and y represents the number of X components.Type: GrantFiled: October 2, 1998Date of Patent: December 19, 2000Assignee: Xerox CorporationInventors: James M. Duff, C. Geoffrey Allen, Ah-Mee Hor, Roger E. Gaynor
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Patent number: 5902901Abstract: A process for the 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, for example, from about 120.degree. C. to about 150.degree. C.Type: GrantFiled: May 7, 1998Date of Patent: May 11, 1999Assignee: Xerox CorporationInventors: H. Bruce Goodbrand, George Liebermann, Roger E. Gaynor
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Patent number: 5668276Abstract: A process for the preparation of hydroxygallium phthalocyanines Type A, Type B, Type C, or Type D, which comprises contacting Type V hydroxygallium phthalocyanine with an alcohol.Type: GrantFiled: July 29, 1996Date of Patent: September 16, 1997Assignee: Xerox CorporationInventors: Cheng-Kuo Hsiao, Ah-Mee Hor, Sandra J. Gardner, Roger E. Gaynor, Jacques Poitras
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Patent number: 5567558Abstract: A process for the preparation of hydroxygallium phthalocyanines Type A, Type B, Type C, or Type D, which comprises contacting Type V hydroxygallium phthalocyanine with an alcohol.Type: GrantFiled: March 30, 1995Date of Patent: October 22, 1996Assignee: Xerox CorporationInventors: Cheng-Kuo Hsiao, Ah-Mee Hor, Sandra J. Gardner, Roger E. Gaynor, Jacques Poitras
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Patent number: 5529870Abstract: An electrophotographic imaging member is characterized by a halogenindium phthalocyanine produced by dry milling and treating with an organic amine solvent.Type: GrantFiled: May 11, 1995Date of Patent: June 25, 1996Assignee: Xerox CorporationInventors: Steven J. Grammatica, Ah-Mee Hor, Roger E. Gaynor, Alan B. Mistrater, Peter J. Valianatos, John S. Chambers, Rachael A. Forgit, Jacques Poitras