Patents by Inventor Baopei Xu
Baopei Xu 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: 7327925Abstract: A photosensitive composition suitable for practical waveguide devices is provided. The photosensitive composition comprises at least one multifunctional acrylate prepared from a fluorinated multifunctional alcohol and at least one photoinitiator. The said composition has high photo contrast, high curing speed, controllable refractive index, low curing shrinkage, high thermo-optic coefficient, low volatility and high viscosity. A waveguide device is formed by patterning the photosensitive composition.Type: GrantFiled: June 2, 2006Date of Patent: February 5, 2008Assignee: E. I. du Pont de Nemours and CompanyInventors: Fang Wang, Baopei Xu, Indira S. Pottebaum, Chuck C. Xu, Deepti Pant, Chris E. Osuch, Louay A. Eldada
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Publication number: 20060229379Abstract: A photosensitive composition suitable for practical waveguide devices is provided. The photosensitive composition comprises at least one multifunctional acrylate prepared from a fluorinated multifunctional alcohol and at least one photoinitiator. The said composition has high photo contrast, high curing speed, controllable refractive index, low curing shrinkage, high thermo-optic coefficient, low volatility and high viscosity. A waveguide device is formed by patterning the photosensitive composition.Type: ApplicationFiled: June 2, 2006Publication date: October 12, 2006Inventors: Fang Wang, Baopei Xu, Indira Pottebaum, Chuck Xu, Deepti Pant, Chris Osuch, Louay Eldada
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Patent number: 6800424Abstract: The invention provides organic optical waveguide devices which employ perfluoropolymeric materials having low optical loss and low birefringence. An optical element has a substrate; a patterned, light transmissive perfluoropolymer core composition; and a light reflecting cladding composition on the pattern of the core. Writing of high-efficiency waveguide gratings is also disclosed.Type: GrantFiled: January 8, 2003Date of Patent: October 5, 2004Assignee: E. I. du Pont de Nemours and CompanyInventors: Baopei Xu, Louay Eldada, Robert A. Norwood, Robert Blomquist
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Publication number: 20040170795Abstract: This invention concerns lasable bond-ply materials comprising a nonwoven reinforcing material and at least one resin material. The present invention also includes methods for using the bond-ply of this invention to manufacture high density multilayer printed wiring boards.Type: ApplicationFiled: November 17, 2003Publication date: September 2, 2004Applicant: AlliedSignal Inc.Inventors: David R. Haas, Chengzeng Xu, Mavyn McAuliffe, Scott Zimmerman, Laura Miller, Meifang Qin, Baopei Xu, Richard J. Pommer
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Patent number: 6689900Abstract: Fluorinated multifunctional alcohols containing at least 3 primary hydroxyl groups are disclosed. Such alcohols allow for easy synthesis of multifunctional crosslinkers such as acrylates, epoxies and vinyl ethers. The multifunctional crosslinkers are used in fluorinated optical coating and waveguide compositions to increase curing speed and crosslinking density.Type: GrantFiled: January 31, 2002Date of Patent: February 10, 2004Assignees: E. I. du Pont de Nemours and Company, Telephotonics IncorporatedInventors: Fang Wang, Baopei Xu, Indira S. Pottebaum, Chuck C. Xu
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Patent number: 6673190Abstract: This invention concerns lasable bond-ply materials comprising a nonwoven reinforcing material and at least one resin material. The present invention also includes methods for using the bond-ply of this invention to manufacture high density multilayer printed wiring boards.Type: GrantFiled: April 4, 2001Date of Patent: January 6, 2004Assignee: Honeywell International Inc.Inventors: David Haas, Chengzeng Xu, Mavyn McAuliffe, Scott Zimmerman, Laura Miller, Meifang Qin, Baopei Xu, Richard Pommer
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Publication number: 20030207215Abstract: The invention provides organic optical waveguide devices which employ perfluoropolymeric materials having low optical loss and low birefringence. An optical element has a substrate; a patterned, light transmissive perfluoropolymer core composition; and a light reflecting cladding composition on the pattern of the core. Writing of high-efficiency waveguide gratings is also disclosed.Type: ApplicationFiled: January 8, 2003Publication date: November 6, 2003Inventors: Baopei Xu, Louay Eldada, Robert A. Norwood, Robert Blomquist
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Patent number: 6555288Abstract: The invention provides organic optical waveguide devices which employ perfluoropolymeric materials having low optical loss and low birefringence. An optical element has a substrate; a patterned, light transmissive perfluoropolymer core composition; and a light reflecting cladding composition on the pattern of the core. Writing of high-efficiency waveguide gratings is also disclosed.Type: GrantFiled: December 20, 2000Date of Patent: April 29, 2003Assignee: Corning IncorporatedInventors: Baopei Xu, Louay Eidada, Robert A. Norwood, Robert Blomquist
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Patent number: 6534671Abstract: This invention relates to a novel class of halofluorinated acrylates and more particularly to chlorofluorinated or bromofluorinated acrylates characterized by a chlorofluorinated or bromofluorinated alkylene moiety with acrylate functions at both terminals. These chlorofluorinated acrylates may be photocured in the presence of a photoinitiator into transparent polymers useful as optical waveguiding materials.Type: GrantFiled: June 13, 2001Date of Patent: March 18, 2003Assignee: Corning IncorporatedInventors: Chengjiu Wu, Baopei Xu, Jianhui Shan, James T. Yardley
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Publication number: 20020115820Abstract: A class of fluorinated multifunctional alcohols and their derivatives such as acrylates, epoxies and vinyl ethers. The multifunctional alcohols were synthesized from a core molecule having at least three equivalents of hydroxy-reacting functional groups and a fluorinated molecule containing at least two hydroxyl groups.Type: ApplicationFiled: January 18, 2002Publication date: August 22, 2002Inventors: Fang Wang, Chuck C. Xu, Baopei Xu, Indira S. Pottebaum
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Publication number: 20020111518Abstract: Fluorinated multifunctional alcohols containing at least 3 primary hydroxyl groups are disclosed. Such alcohols allow for easy synthesis of multifunctional crosslinkers such as acrylates, epoxies and vinyl ethers. The multifunctional crosslinkers are used in fluorinated optical coating and waveguide compositions to increase curing speed and crosslinking density.Type: ApplicationFiled: January 31, 2002Publication date: August 15, 2002Inventors: Fang Wang, Baopei Xu, Indira S. Pottebaum, Chuck C. Xu
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Publication number: 20020006586Abstract: The invention provides organic optical waveguide devices which employ perfluoropolymeric materials having low optical loss and low birefringence. An optical element has a substrate; a patterned, light transmissive perfluoropolymer core composition; and a light reflecting cladding composition on the pattern of the core. Writing of high-efficiency waveguide gratings is also disclosed.Type: ApplicationFiled: July 19, 2001Publication date: January 17, 2002Applicant: Corning IncorporatedInventors: Baopei Xu, Louay Eldada, Robert Norwood, Robert Blomquist
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Publication number: 20020004352Abstract: This invention concerns lasable bond-ply materials comprising a nonwoven reinforcing material and at least one resin material. The present invention also includes methods for using the bond-ply of this invention to manufacture high density multilayer printed wiring boards.Type: ApplicationFiled: April 4, 2001Publication date: January 10, 2002Applicant: AlliedSignal, Inc.Inventors: David Haas, Chengzeng Xu, Mavyn McAuliffe, Scott Zimmerman, Laura Miller, Meifang Qin, Baopei Xu, Richard Pommer
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Publication number: 20010053502Abstract: This invention relates to a novel class of halofluorinated acrylates and more particularly to chlorofluorinated or bromofluorinated acrylates characterized by a chlorofluorinated or bromofluorinated alkylene moiety with acrylate functions at both terminals. These chlorofluorinated acrylates may be photocured in the presence of a photoinitiator into transparent polymers useful as optical waveguiding materials.Type: ApplicationFiled: June 13, 2001Publication date: December 20, 2001Inventors: Chengjiu Wu, Baopei Xu, Jianhui Shan, James T. Yardley
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Patent number: 6323361Abstract: This invention relates to a novel class of halofluorinated acrylates and more particularly to chlorofluorinated or bromofluorinated acrylates characterized by a chlorofluorinated or bromofluorinated alkylene moiety with acrylate functions at both terminals. These chlorofluorinated acrylates may be photocured in the presence of a photoinitiator into transparent polymers useful as optical waveguiding materials.Type: GrantFiled: April 17, 1997Date of Patent: November 27, 2001Assignee: Corning Inc.Inventors: Chengjiu Wu, Baopei Xu, Jianhui Shan, James T. Yardley
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Publication number: 20010044481Abstract: This invention relates to a novel class of halofluorinated acrylates and more particularly to chlorofluorinated or bromofluorinated acrylates characterized by a chlorofluorinated or bromofluorinated alkylene moiety with acrylate functions at both terminals. These chlorofluorinated acrylates may be photocured in the presence of a photoinitiator into transparent polymers useful as optical waveguiding materials.Type: ApplicationFiled: June 13, 2001Publication date: November 22, 2001Inventors: Chengjiu Wu, Baopei Xu, Jianhui Shan, James T. Yardley
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Patent number: 6306563Abstract: The invention provides organic optical waveguide devices which employ perfluoropolymeric materials having low optical loss and low birefringence. An optical element has a substrate; a patterned, light transmissive perfluoropolymer core composition; and a light reflecting cladding composition on the pattern of the core. Writing of high-efficiency waveguide gratings is also disclosed.Type: GrantFiled: June 21, 1999Date of Patent: October 23, 2001Assignee: Corning Inc.Inventors: Baopei Xu, Louay Eldada, Robert Norwood, Robert Blomquist
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Patent number: 6245696Abstract: This invention concerns lasable bond-ply materials comprising a nonwoven reinforcing material and at least one resin material. The present invention also includes methods for using the bond-ply of this invention to manufacture high density multilayer printed wiring boards.Type: GrantFiled: June 25, 1999Date of Patent: June 12, 2001Assignee: Honeywell International Inc.Inventors: David R. Haas, Chengzeng Xu, Mavyn McAuliffe, Scott Zimmerman, Laura Miller, Meifang Qin, Baopei Xu, Richard J. Pommer
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Patent number: 6166156Abstract: Halofluorinated alkylene monomers are made by a method comprising the steps of: (a) subjecting a first polymer which is the reaction product of a fluorinated vinyl monomer and a vinyl comonomer to dehydrohalogenation to form a second polymer; (b) treating the second polymer with an oxidizing agent to form an oxidation product consisting of a .alpha., .omega.-dicarboxylic acid or an ester derivative thereof; and (c) treating said oxidation product with a reducing agent to form a reduction product consisting of a a .alpha., .omega.-diol. Preferably, the first polymer has a structure of --[CH.sub.2 CYZ(CF.sub.2 CFX).sub.n ].sub.m -- wherein X and Y=F, Cl or Br; X and Y may be the same or different; Z=H, F, Cl, Br, alkyl or perfluoroalkyl containing from about 1 to about 10 carbon atoms; n=an integer larger than about 1; and m is an integer between about 2 and about 10.sup.5. The .alpha., .omega.-dicarboxylic acids and .alpha., .omega.-diols produced herein can be directly used as polycondensation monomers.Type: GrantFiled: November 12, 1998Date of Patent: December 26, 2000Inventors: Chengjiu Wu, Baopei Xu, James T. Yardley