Patents by Inventor Qiwei Lu

Qiwei Lu 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).

  • Publication number: 20090216006
    Abstract: The present invention relates to liquid chromatographic chiral stationary phases (CSPs) and their preparation. The CSPs are based on carbamate-derivatized polysaccharides that are covalently bound onto inorganic oxide carriers via unique linkage chemistry. The present invention also relates to methods of obtaining the said linkages, which include derivatizing and functionalizing the polysaccharides, and also chemically bonding the functionalized carbamate-derivatized polysaccharides onto inorganic oxide carriers. The polysaccharide derivatives so obtained can be used as materials for the liquid chromatographic chiral separation of enantiomers. The preferred inorganic oxides are silica, zirconium oxide, and aluminum oxide. Cellulose and amylose are the preferred chiral polysaccharides.
    Type: Application
    Filed: February 19, 2009
    Publication date: August 27, 2009
    Inventors: Hui Xu, Yafeng Zhang, Qiwei Lu
  • Publication number: 20090110845
    Abstract: The invention provides a method of bonding a sensor to a surface comprising the steps of applying a thermoplastic film to a first surface of the sensor. The first surface of the sensor is contacted with a surface of an object to be monitored, wherein the composition effectively bonds the sensor to the object surface at a temperature up to approximately 250° C. The invention also provides a method of bonding a sensor to a surface comprising the steps of applying a thermoplastic film to a surface area of an object to be monitored. The first surface of a sensor is contacted with the object surface area, wherein the film effectively bonds the sensor to the object surface at a temperature up to approximately 250° C.
    Type: Application
    Filed: October 30, 2007
    Publication date: April 30, 2009
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Qiwei Lu, Robert James Perry, Ying Fan, Kevin Warner Flanagan, James Norman Barshinger, Wendy Wen-Ling Lin, Irene Dris
  • Publication number: 20090107632
    Abstract: An adhesive composition is provided which effectively bonds a sensor to a surface having a temperature up to approximately 250° C. The adhesive composition comprises an epoxy resin and a latent cationic cure catalyst effective to cure the epoxy resin. The invention also provides a method of preparing an adhesive composition comprising blending an epoxy resin and a latent cationic cure catalyst effective to cure the epoxy resin, wherein the composition is capable of effectively bonding a sensor to a surface having a temperature up to approximately 250° C. The invention further provides a method of bonding a sensor to a surface comprising the steps of applying an adhesive composition to a first surface of the sensor or to a surface area of an object to be monitored, the adhesive composition comprising an epoxy compound and a latent cationic cure catalyst effective to cure the epoxy resin.
    Type: Application
    Filed: October 30, 2007
    Publication date: April 30, 2009
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Qiwei Lu, Robert James Perry, Michael Joseph O'Brien, Ying Fan, James Norman Barshinger
  • Patent number: 7429800
    Abstract: A molding composition suitable for encapsulating solid state devices includes an epoxy resin, a hardener, a poly(arylene ether) resin comprising less than 5 weight percent of particles greater than 100 micrometers, and about 70 to about 95 weight percent of a silica filler, based on the total weight of the composition. After curing, the composition exhibits improved increased copper adhesion and reduced shrinkage compared to conventional molding compositions.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: September 30, 2008
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Qiwei Lu, Michael O'Brien, Gerardo Rocha-Galicia, Prameela Susarla
  • Patent number: 7378455
    Abstract: A curable method useful for encapsulating solid state devices includes (A) an epoxy resin; (B) an effective amount of a cure catalyst comprising (B1) a first latent cationic cure catalyst comprising a diaryl iodonium hexafluoroantimonate salt; (B2) a second latent cationic cure catalyst comprising (B2a) a diaryl iodonium cation, and (B2b) an anion selected from perchlorate, imidodisulfurylfluoride anion, unsubstituted and substituted (C1-C12)-hydrocarbylsulfonates, (C2-C12)-perfluoroalkanoates, tetrafluoroborate, unsubstituted and substituted tetra-(C1-C12)-hydrocarbylborates, hexafluorophosphate, hexafluoroarsenate, tris(trifluoromethylsulfonyl)methyl anion, bis(trifluoromethylsulfonyl)methyl anion, bis(trifluoromethylsulfuryl)imide anion, and combinations thereof; and (B3) a cure co-catalyst selected from free-radical generating aromatic compounds, peroxy compounds, copper (II) salts of aliphatic carboxylic acids, copper (II) salts of aromatic carboxylic acids, copper (II) acetylacetonate, and combinations
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: May 27, 2008
    Assignee: General Electric Company
    Inventors: Qiwei Lu, Michael O'Brien, Michael Vallance
  • Publication number: 20080051522
    Abstract: A curable composition includes an olefinically unsaturated monomer and a poly(arylene ether) having two polymerizable groups and an intrinsic viscosity of about 0.05 to about 0.30 deciliters per gram. The composition exhibits an improved combination of high flow during molding and high post-cure stiffness and impact strength. The composition is particularly useful for fabricating plastic-packaged electronic devices.
    Type: Application
    Filed: October 24, 2007
    Publication date: February 28, 2008
    Inventors: Joop Birsak, Herbert Chao, Bryan Duffey, Amy Freshour, Hugo Ingelbrecht, Qiwei Lu, Michael O'Brien, Prameela Susarla, Michael Vallance, Kenneth Zarnoch
  • Patent number: 7329708
    Abstract: A curable composition includes an olefinically unsaturated monomer and a poly(arylene ether) having two polymerizable groups and an intrinsic viscosity of about 0.05 to about 0.30 deciliters per gram. The composition exhibits an improved combination of high flow during molding and high post-cure stiffness and impact strength. The composition is particularly useful for fabricating plastic-packaged electronic devices.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: February 12, 2008
    Assignee: General Electric Company
    Inventors: Joop Birsak, Herbert Shin-I Chao, Bryan Duffey, Amy Rene Freshour, Hugo Gerard Eduard Ingelbrecht, Qiwei Lu, Michael Joseph O'Brien, Prameela Susarla, Michael Vallance, Kenneth Paul Zarnoch
  • Publication number: 20070004872
    Abstract: A molding composition suitable for encapsulating solid state devices includes an epoxy resin, a hardener, a poly(arylene ether) resin comprising less than 5 weight percent of particles greater than 100 micrometers, and about 70 to about 95 weight percent of a silica filler, based on the total weight of the composition. After curing, the composition exhibits improved increased copper adhesion and reduced shrinkage compared to conventional molding compositions.
    Type: Application
    Filed: June 30, 2005
    Publication date: January 4, 2007
    Inventors: Qiwei Lu, Michael O'Brien, Gerardo Rocha-Galicia, Prameela Susarla
  • Publication number: 20070004871
    Abstract: A curable resin composition useful for encapsulating solid state devices is described. The composition includes an epoxy resin, a poly(arylene ether) resin, a latent cationic cure catalyst effective to cure the epoxy resin, and about 70 to about 95 weight percent of an inorganic filler, based on the total weight of the curable composition. A method of encapsulating a solid state device with the composition and encapsulated devices prepared with the composition are also described.
    Type: Application
    Filed: June 30, 2005
    Publication date: January 4, 2007
    Inventors: Qiwei Lu, Michael O'Brien, Prameela Susarla, Michael Vallance
  • Publication number: 20070004819
    Abstract: A curable method useful for encapsulating solid state devices includes (A) an epoxy resin; (B) an effective amount of a cure catalyst comprising (B1) a first latent cationic cure catalyst comprising a diaryl iodonium hexafluoroantimonate salt; (B2) a second latent cationic cure catalyst comprising (B2a) a diaryl iodonium cation, and (B2b) an anion selected from perchlorate, imidodisulfurylfluoride anion, unsubstituted and substituted (C1-C12)-hydrocarbylsulfonates, (C2-C12)-perfluoroalkanoates, tetrafluoroborate, unsubstituted and substituted tetra-(C1-C12)-hydrocarbylborates, hexafluorophosphate, hexafluoroarsenate, tris(trifluoromethylsulfonyl)methyl anion, bis(trifluoromethylsulfonyl)methyl anion, bis(trifluoromethylsulfuryl)imide anion, and combinations thereof; and (B3) a cure co-catalyst selected from free-radical generating aromatic compounds, peroxy compounds, copper (II) salts of aliphatic carboxylic acids, copper (II) salts of aromatic carboxylic acids, copper (II) acetylacetonate, and combinations
    Type: Application
    Filed: June 30, 2005
    Publication date: January 4, 2007
    Inventors: Qiwei Lu, Michael O'Brien, Michael Vallance
  • Publication number: 20060041086
    Abstract: A curable composition includes an olefinically unsaturated monomer and a poly(arylene ether) having two polymerizable groups and an intrinsic viscosity of about 0.05 to about 0.30 deciliters per gram. The composition exhibits an improved combination of high flow during molding and high post-cure stiffness and impact strength. The composition is particularly useful for fabricating plastic-packaged electronic devices.
    Type: Application
    Filed: August 18, 2004
    Publication date: February 23, 2006
    Inventors: Joop Birsak, Herbert Chao, Bryan Duffey, Amy Freshour, Hugo Ingelbrecht, Qiwei Lu, Michael O'Brien, Prameela Susarla, Michael Vallance, Kenneth Zarnoch
  • Publication number: 20050158561
    Abstract: Disclosed are weatherable multilayer articles comprising (i) a coating layer comprising a block copolyestercarbonate comprising structural units derived from at least one 1,3-dihydroxybenzene and at least one aromatic dicarboxylic acid, (ii) a second layer comprising a polymer comprising carbonate structural units, (iii) a substrate layer comprising a polypropylene, and (iv) at least one adhesive layer comprising the reaction product of an amine-functionalized polypropylene and a polyurethane, wherein the coating layer is in contiguous contact with the second layer, and the adhesive layer is in contiguous contact with the second layer and the substrate layer. Also disclosed is a method for making the multilayer article.
    Type: Application
    Filed: January 16, 2004
    Publication date: July 21, 2005
    Inventors: Hua Wang, Qiwei Lu