Patents by Inventor Ah-Mee Hor
Ah-Mee Hor 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: 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: 6392339Abstract: An organic light emitting device includes a mixed region composed of a mixture of a hole transport material and an electron transport material, one of which is an emitter. The organic light emitting device also includes at least one of a hole transport material region and an electron transport material region on the mixed region. An anode contacts the hole transport material region or the mixed region. A cathode contacts the electron transport material region or the mixed region. The hole transport material region and/or the electron transfer material region can be formed with a plurality of layers.Type: GrantFiled: July 20, 1999Date of Patent: May 21, 2002Assignee: Xerox CorporationInventors: Hany M. Aziz, Zoran D. Popovic, Nan-Xing Hu, Ah-Mee Hor
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Patent number: 6322941Abstract: A photoconductive imaging member containing a photogenerating layer comprised of a mixture of perylenes, wherein the mixture comprises, for example, (1) 1,3-bis(n-pentylimidoperyleneimido) propane (Formula A), 1,3-bis(2-methylbutylimido peryleneimido)propane (Formula B) and 1-(n-pentylimidoperyleneimido)-3-(2-methylbutyl imidoperyleneimido)-propane (Formula C), and (2) an electron acceptor component polymerType: GrantFiled: July 13, 2000Date of Patent: November 27, 2001Assignee: Xerox CorporationInventors: Cheng-Kuo Hsiao, Ping Liu, Ah-Mee Hor, Beng S. Ong
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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: 6225467Abstract: The triazine wherein Ar1, Ar2, Ar3, and Ar4 are each independently an aryl; R1 and R2 are substituents selected from the group consisting of hydrogen, an alkyl, an aryl, an alkoxy, a halogen atom, and a cyano; R3 and R4 are each a divalent group L selected from the group consisting of —C(R′R″)—, alkylene, an oxygen atom, a sulfur atom, and —Si(R′R″)—, wherein R′ and R″ are selected from the group consisting of hydrogen, alkyl, alkoxy, and aryl.Type: GrantFiled: January 21, 2000Date of Patent: May 1, 2001Assignee: Xerox CorporationInventors: Mohammad Esteghamatian, Nan-Xing Hu, Zoran D. Popovic, Ah-Mee Hor, Beng S. Ong
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Patent number: 6214504Abstract: A photoconductive imaging member containing a photogenerator layer comprised of a mixture of bis(methylbenzimidazo)perinone, optionally an (alkylimido)perylene, such as (n-pentylimido)perylene or mixtures of (n-pentylimido)perylene, bisbenzimidazo(2,1-a-1′,2′-b)anthra(2,1,9-def:6,5,10-d′e′f′)diisoquinoline-6,11-dione and bisbenzimidazo(2,1-a:2′,1′-a)anthra(2,1,9-def:6,5,10-d′e′f′)diisoquinoline-10,21-dione, and a charge transport layer.Type: GrantFiled: June 27, 2000Date of Patent: April 10, 2001Assignee: Xerox CorporationInventors: Mohammad Esteghamatian, Ah-Mee Hor, James M. Duff, C. Geoffrey Allen, Dasarao K. Murti
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Patent number: 6194110Abstract: A photoconductive imaging member containing a photogenerating layer comprised of a mixture of perylenes, wherein the mixture comprises, for example, (1) 1,3-bis(n-pentylimidoperyleneimido) propane (Formula A), 1,3-bis(2-methylbutylimido peryleneimido)propane (Formula B) and 1-(n-pentylimidoperyleneimido)-3-(2-methylbutylimidoperyleneimido)-propane (Formula C), and (2) an electron acceptor component Formula A 1,3-bis(n-pentylimidoperyleneimido)propane Formula B 1,3-bis(2-methylbutylimidoperyleneimido)propane Formula C 1-(n-pentylimidoperyleneimido)-3-(2-methylbutylimidoperyleneimido)propaneType: GrantFiled: July 13, 2000Date of Patent: February 27, 2001Assignee: Xerox CorporationInventors: Cheng-Kuo Hsiao, Ah-Mee Hor, Giuseppa Baranyi, H. Bruce Goodbrand
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Patent number: 6165661Abstract: A mixture comprised of at least two perylenes and wherein the mixture includes symmetrical perylenes, unsymmetrical perylenes, and unsymmetrical perylenes with dissimilar R.sub.1 and R.sub.2 terminal substituents. The perylene mixtures can be selected for photoconductive imaging members.Type: GrantFiled: May 21, 1999Date of Patent: December 26, 2000Assignee: Xerox CorporationInventors: Cheng-Kuo Hsiao, Ah-Mee Hor, James M. Duff, Giuseppa Baranyi, C. Geoffrey Allen
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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: 6074791Abstract: 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 metal oxide prepared by a sol-gel process.Type: GrantFiled: February 26, 1999Date of Patent: June 13, 2000Assignee: Xerox CorporationInventors: Carol A. Jennings, Dasarao K. Murti, Paul F. Smith, Gwynne E. McAneney, Ah-Mee Hor, Sandra J. Gardner, Beng S. Ong
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Patent number: 6057048Abstract: An electroluminescent device comprised of an anode, a hole transporting layer, a light emitting layer, and a cathode, wherein said light emitting layer contains a component of the formula ##STR1## wherein Ar.sup.1, Ar.sup.2, Ar.sup.3, and Ar.sup.4 are each independently aryl or optionally aliphatic; R.sup.1 and R.sup.2 are independently selected from the group consisting of hydrogen, aliphatic, halogen, and cyano; L is a suitable linking group; and n is a number of from 0 to about 3.Type: GrantFiled: October 1, 1998Date of Patent: May 2, 2000Assignee: Xerox CorporationInventors: Nan-Xing Hu, Mohammad Esteghamatian, Yu Qi, Zoran D. Popovic, Beng S. Ong, Ah-Mee Hor
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Patent number: 6051351Abstract: Photoconductive imaging members comprised of a mixture of dimeric perylenes as a charge generator, wherein said mixture comprises at least perylenes encompassed by the following formulas, or mixtures thereof ##STR1## wherein R is hydrogen, alkyl, cycloalkyl, oxaalkyl, substituted alkyl, aryl, substituted aryl, aralkyl or substituted aralkyl; and X is a symmetrical bridging moiety, and X--Y represents an unsymmetrical bridging moiety.Type: GrantFiled: May 21, 1999Date of Patent: April 18, 2000Assignee: Xerox CorporationInventors: Cheng-Kuo Hsiao, Ah-Mee Hor, James M. Duff, Giuseppa Baranyi, C. Geoffrey Allen
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Patent number: 5989737Abstract: An organic electroluminescent (EL) device comprised, in the following sequence, of an anode, an organic hole injecting and hole transporting layer, an organic electron injecting and electron transporting layer, and a cathode, wherein said organic hole injecting and transporting layer is comprised of a mixture of a tertiary aromatic amine and a polycyclic aromatic hydrocarbon compound.Type: GrantFiled: February 27, 1997Date of Patent: November 23, 1999Assignee: Xerox CorporationInventors: Shuang Xie, Nan-Xing Hu, Zoran D. Popovic, Ah-Mee Hor, Beng S. Ong
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Patent number: 5952115Abstract: An organic electroluminescent (EL) device with a charge transport component of an indolocarbazole compound represented by Formulas (I) or (II) ##STR1## wherein R and R' are independently selected from the group consisting of hydrogen, alkyl, alkoxyl, aryl, and halogen; m and n are numbers from 0 to 4; A.sup.1 and A.sup.2 are arylene; Ar.sup.1, Ar.sup.2, Ar.sup.3, and Ar.sup.4 are aryl; R.sup.1 and R.sup.2 are independently selected from the group consisting of hydrogen, alkyl, alkoxyl, aryl, and halogen; and p is a number from 1 to 3.Type: GrantFiled: October 2, 1997Date of Patent: September 14, 1999Assignee: Xerox CorporationInventors: Nan-Xing Hu, Shuang Xie, Zoran D. Popovic, Beng S. Ong, Ah-Mee Hor
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Patent number: 5942340Abstract: An organic electroluminescent device member comprised of a charge transport component of an indolocarbazole represented by Formulas (I), (II), (III), (IV), (V), or (VI); or optionally mixtures thereof ##STR1## wherein R and R' are independently selected from the group consisting of a hydrogen atom, halogen atom, alkyl, alkoxyl, and aryl; m and n are numbers of 0 to 4; R.sup.1 and R.sup.2 are independently selected from the group consisting of alkyl, aryl, and vinyl; R.sup.3 and R.sup.4 are independently selected from the group consisting of a hydrogen atom, halogen atom, alkyl, alkoxy, and aryl, and p is a number from 1 to 3.Type: GrantFiled: October 2, 1997Date of Patent: August 24, 1999Assignee: Xerox CorporationInventors: Nan-Xing Hu, Shuang Xie, Zoran D. Popovic, Beng S. Ong, Ah-Mee Hor
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Patent number: 5932363Abstract: A luminescent composition containing a mixture of a fluorescent material and a metal chelate compound of the formulaL.sub.n --M.sup.+n (I)wherein M represents a metal; n is a number of from 1 to 3, and L is a ligand of the formula ##STR1## wherein Ar is an aryl; X is selected from the group consisting of oxygen, sulfur, and selenium; N is nitrogen; O is oxygen, and Z is a suitable aromatic component.Type: GrantFiled: October 2, 1997Date of Patent: August 3, 1999Assignee: Xerox CorporationInventors: Nan-Xing Hu, Shuang Xie, Zoran D. Popovic, Beng S. Ong, Ah-Mee Hor
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Patent number: 5925472Abstract: A metal chelate compound of the formulaL.sub.n --M.sup.+n (I)wherein M represents a metal; n is an integer, or number of from 1 to 3; and L is a ligand of ##STR1## wherein Ar is aryl; X is selected from the group consisting of oxygen, sulfur, and selenium; N is nitrogen; O is oxygen; and Z is a suitable aromatic component.Type: GrantFiled: March 31, 1997Date of Patent: July 20, 1999Assignee: Xerox CorporationInventors: Nan-Xing Hu, Shuang Xie, Zoran D. Popovic, Beng S. Ong, Ah-Mee Hor
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Patent number: 5891587Abstract: An organic electroluminescent (EL) device comprised of a starburst aromatic amine compound represented by the formula ##STR1## wherein N is nitrogen; A.sup.1 to A.sup.3 each individually represent biaryl; R.sub.a, R.sub.b, and R.sub.c represent independently one of the functional groups of the following formulae ##STR2## wherein N is nitrogen; each Ar.sup.1 and Ar.sup.2 are aryl; R.sub.1 to R.sub.8 are substituents independently selected from the group consisting of hydrogen, halogen, hydrocarbon, and alkoxy; and X represents oxygen, sulfur, or an alkylene.Type: GrantFiled: February 27, 1997Date of Patent: April 6, 1999Assignee: Xerox CorporationInventors: Nan-Xing Hu, Shuang Xie, Beng S. Ong, Zoran D. Popovic, Ah-Mee Hor, Ping Liu
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Patent number: 5853933Abstract: A process for the preparation of perylene tetracarboxylic acid dianhydride comprising the dissolution thereof in an aqueous alkaline solution, or optionally an amine solution; converting the salt formed to the corresponding tetracarboxylic acid of said perylene tetracarboxylic dianhydride; heating the resulting tetracarboxylic acid; washing the dianhydride formed until the filtrate pH indicates substantially complete removal of the acid; and drying said dianhydride.Type: GrantFiled: June 2, 1997Date of Patent: December 29, 1998Assignee: Xerox CorporationInventors: James M. Duff, Ah-Mee Hor, C. Geoffrey Allen