Patents by Inventor William Cheng

William Cheng 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: 20040058152
    Abstract: The processes and apparatus of the present invention concerns melt spinning high viscosity fluoropolymers into single filaments or multifilament yarns at high spinning speeds, the melt spinning being carried out at a temperature which is at least 90° C. greater than the melting point of the polymer or in the case of perfluoropolymer, at a temperature of at least 450° C., and the yarns produced by the process, wherein the filaments can exhibit an orientation at the surface of the filament no greater than at the core of the filament.
    Type: Application
    Filed: July 21, 2003
    Publication date: March 25, 2004
    Inventors: Edward William Tokarsky, William Cheng Uy, Robert Thomas Young
  • Patent number: 6667097
    Abstract: The processes and apparatus of the present invention concerns melt spinning high viscosity fluoropolymers into single filaments or multi-filament yams at high spinning speeds, the melt spinning being carried out at a temperature which is at least 90° C. greater than the melting point of the polymer or in the case of perfluoropolymer, at a temperature of at least 450° C., and the yams produced by the process, wherein the filaments can exhibit an orientation at the surface of the filament no greater than at the core of the filament.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: December 23, 2003
    Inventors: Edward William Tokarsky, William Cheng Uy
  • Patent number: 6668289
    Abstract: A system and method update client computers of various end users with software updates for software products installed on the client computers, the software products manufacturered by diverse, unrelated software vendors. The system includes a service provider computer system, a number of client computers and software vendor computer systems communicating on a common network. The service provider computer system stores in an update database information about the software updates of the diverse software vendors, identifying the software products for which software updates are available, their location on the network at the various software vendor computer systems, information for identifying in the client computers the software products stored thereon, and information for determining for such products, which have software updates available. Users of the client computers connect to the service provider computer and obtain a current version of portions of the database.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: December 23, 2003
    Assignee: Networks Associates Technology, Inc.
    Inventors: William Cheng, Kenneth Hwang, Ravi Kannan, Babu Katchapalayam, Bing Liu, Balaji Narasimhan, Gopal Ramanujam, Jonathan Tran
  • Publication number: 20030200541
    Abstract: A system and method update client computers of various end users with software updates for software products installed on the client computers, the software products manufacturered by diverse, unrelated software vendors. The system includes a service provider computer system, a number of client computers and software vendor computer systems communicating on a common network. The service provider computer system stores in an update database information about the software updates of the diverse software vendors, identifying the software products for which software updates are available, their location on the network at the various software vendor computer systems, information for identifying in the client computers the software products stored thereon, and information for determining for such products, which have software updates available. Users of the client computers connect to the service provider computer and obtain a current version of portions of the database.
    Type: Application
    Filed: June 5, 2003
    Publication date: October 23, 2003
    Inventors: William Cheng, Kenneth Hwang, Ravi Kannan, Babu Katchapalayam, Bing Liu, Balaji Narasimhan, Gopal Ramanujam, Jonathan Tran
  • Publication number: 20030175513
    Abstract: The processes and apparatus of the present invention concerns melt spinning high viscosity fluoropolymers into single filaments or multi-filament yarns at high spinning speeds, the melt spinning being carried out at a temperature which is at least 90° C. greater than the melting point of the polymer or in the case of perfluoropolymer, at a temperature of at least 450° C., and the yarns produced by the process, wherein the filaments can exhibit an orientation at the surface of the filament no greater than at the core of the filament.
    Type: Application
    Filed: September 10, 2002
    Publication date: September 18, 2003
    Inventors: Edward William Tokarsky, William Cheng Uy
  • Patent number: 6620903
    Abstract: This invention relates to fluoropolymer fibers and films which can be modified by cationic agents, such as cationic dyes. The fiber or film comprises a blend of a first and a second copolymer, or it comprises a terpolymer, the blend or terpolymer having (1) an acid or ionic functionality provided by a pendant group represented by the formula —(O—CF2CFR)aO—CF2CFR′SO3−Z+, wherein R and R′ are independently selected from F, Cl or a perfluorinated alkyl group having 1 to 10 carbon atoms, a=0, 1 or 2, and Z+ is H+, an alkali metal cation, or a cation derived from a compound selected from the group consisting of a cationic dye, a cationic whitener, a cationic flame retardant, a cationic antistatic agent, and mixtures thereof, and (2) a larger amount of a fluoroalkylvinylether, a fluoroalkene, or ethylene functionality. Such fibers and films are useful in various consumer goods where the product is desirably colored, whitened, antistatic, or flame retardant.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: September 16, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Uy William Cheng
  • Publication number: 20030119991
    Abstract: This invention relates to fluoropolymer fibers and films which can be modified by cationic agents, such as cationic dyes. The fiber or film comprises a blend of a first and a second copolymer, or it comprises a terpolymer, the blend or terpolymer having (1) an acid or ionic functionality provided by a pendant group represented by the formula —(O—CF2CFR)aO—CF2CFR′SO3−Z+, wherein R and R′ are independently selected from F, Cl or a perfluorinated alkyl group having 1 to 10 carbon atoms, a=0, 1 or 2, and Z+ is H+, an alkali metal cation, or a cation derived from a compound selected from the group consisting of a cationic dye, a cationic whitener, a cationic flame retardant, a cationic antistatic agent, and mixtures thereof, and (2) a larger amount of a fluoroalkylvinylether, a fluoroalkene, or ethylene functionality. Such fibers and films are useful in various consumer goods where the product is desirably colored, whitened, antistatic, or flame retardant.
    Type: Application
    Filed: December 3, 2002
    Publication date: June 26, 2003
    Inventor: William Cheng Uy
  • Publication number: 20030110241
    Abstract: A system and method update client computers of various end users with software updates for software products installed on the client computers, the software products manufacturered by diverse, unrelated software vendors. The system includes a service provider computer system, a number of client computers and software vendor computer systems communicating on a common network. The service provider computer system stores in an update database information about the software updates of the diverse software vendors, identifying the software products for which software updates are available, their location on the network at the various software vendor computer systems, information for identifying in the client computers the software products stored thereon, and information for determining for such products, which have software updates available. Users of the client computers connect to the service provider computer and obtain a current version of portions of the database.
    Type: Application
    Filed: October 4, 2002
    Publication date: June 12, 2003
    Inventors: William Cheng, Kenneth Hwang, Ravi Kannan, Babu Katchapalayam, Bing Liu, Balaji Narasimhan, Gopal Ramanujam, Jonathan Tran
  • Patent number: 6542943
    Abstract: A system and method update client computers of various end users with software updates for software products installed on the client computers, the software products manufacturered by diverse, unrelated software vendors. The system includes a service provider computer system, a number of client computers and software vendor computer systems communicating on a common network. The service provider computer system stores in an update database information about the software updates of the diverse software vendors, identifying the software products for which software updates are available, their location on the network at the various software vendor computer systems, information for identifying in the client computers the software products stored thereon, and information for determining for such products, which have software updates available. Users of the client computers connect to the service provider computer and obtain a current version of portions of the database.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: April 1, 2003
    Assignee: Networks Associates Technology, Inc.
    Inventors: William Cheng, Kenneth Hwang, Ravi Kannan, Babu Katchapalayam, Bing Liu, Balaji Narasimhan, Gopal Ramanujam, Jonathan Tran
  • Publication number: 20030046675
    Abstract: A system and method update client computers of various end users with software updates for software products installed on the client computers, the software products manufacturered by diverse, unrelated software vendors. The system includes a service provider computer system, a number of client computers and software vendor computer systems communicating on a common network. The service provider computer system stores in an update database information about the software updates of the diverse software vendors, identifying the software products for which software updates are available, their location on the network at the various software vendor computer systems, information for identifying in the client computers the software products stored thereon, and information for determining for such products, which have software updates available. Users of the client computers connect to the service provider computer and obtain a current version of portions of the database.
    Type: Application
    Filed: April 17, 2002
    Publication date: March 6, 2003
    Inventors: William Cheng, Kenneth Hwang, Ravi Kannan, Babu Katchapalayam, Bing Liu, Balaji Narasimhan, Gopal Ramanujam, Jonathan Tran
  • Publication number: 20030046676
    Abstract: A system and method update client computers of various end users with software updates for software products installed on the client computers, the software products manufacturered by diverse, unrelated software vendors. The system includes a service provider computer system, a number of client computers and software vendor computer systems communicating on a common network. The service provider computer system stores in an update database information about the software updates of the diverse software vendors, identifying the software products for which software updates are available, their location on the network at the various software vendor computer systems, information for identifying in the client computers the software products stored thereon, and information for determining for such products, which have software updates available. Users of the client computers connect to the service provider computer and obtain a current version of portions of the database.
    Type: Application
    Filed: April 17, 2002
    Publication date: March 6, 2003
    Inventors: William Cheng, Kenneth Hwang, Ravi Kannan, Babu Katchapalayam, Bing Liu, Balaji Narasimhan, Gopal Ramanujam, Jonathan Tran
  • Patent number: 6498216
    Abstract: This invention relates to fluoropolymer fibers and films which can be modified by cationic agents, such as cationic dyes. The fiber or film comprises a blend of a first and a second copolymer, or it comprises a terpolymer, the blend or terpolymer having (1) an acid or ionic functionality provided by a pendant group represented by the formula —(O—CF2CFR)aO—CF2CFR′SO3−Z+, wherein R and R′ are independently selected from F, Cl or a perfluorinated alkyl group having 1 to 10 carbon atoms, a=0, 1 or 2, and Z+ is H+, an alkali metal cation, or a cation derived from a compound selected from the group consisting of a cationic dye, a cationic whitener, a cationic flame retardant, a cationic antistatic agent, and mixtures thereof, and (2) a larger amount of a fluoroalkylvinylether, a fluoroalkene, or ethylene functionality. Such fibers and films are useful in various consumer goods where the product is desirably colored, whitened, antistatic, or flame retardant.
    Type: Grant
    Filed: November 21, 2000
    Date of Patent: December 24, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Uy William Cheng
  • Patent number: 6496875
    Abstract: A system and method update client computers of various end users with software updates for software products installed on the client computers, the software products manufacturered by diverse, unrelated software vendors. The system includes a service provider computer system, a number of client computers and software vendor computer systems communicating on a common network. The service provider computer system stores in an update database information about the software updates of the diverse software vendors, identifying the software products for which software updates are available, their location on the network at the various software vendor computer systems, information for identifying in the client computers the software products stored thereon, and information for determining for such products, which have software updates available. Users of the client computers connect to the service provider computer and obtain a current version of portions of the database.
    Type: Grant
    Filed: April 30, 2002
    Date of Patent: December 17, 2002
    Assignee: Networks Associates Technology, Inc.
    Inventors: William Cheng, Kenneth Hwang, Ravi Kannan, Babu Katchapalayam, Bing Liu, Balaji Narasimhan, Gopal Ramanujam, Jonathan Tran
  • Publication number: 20020166001
    Abstract: A system and method update client computers of various end users with software updates for software products installed on the client computers, the software products manufacturered by diverse, unrelated software vendors. The system includes a service provider computer system, a number of client computers and software vendor computer systems communicating on a common network. The service provider computer system stores in an update database information about the software updates of the diverse software vendors, identifying the software products for which software updates are available, their location on the network at the various software vendor computer systems, information for identifying in the client computers the software products stored thereon, and information for determining for such products, which have software updates available. Users of the client computers connect to the service provider computer and obtain a current version of portions of the database.
    Type: Application
    Filed: April 30, 2002
    Publication date: November 7, 2002
    Inventors: William Cheng, Kenneth Hwang, Ravi Kannan, Babu Katchapalayam, Bing Liu, Balaji Narasimhan, Gopal Ramanujam, Jonathan Tran
  • Patent number: 6457076
    Abstract: A system and method update client computers of various end users with software updates for software products installed on the client computers, the software products manufacturered by diverse, unrelated software vendors. The system includes a service provider computer system, a number of client computers and software vendor computer systems communicating on a common network. The service provider computer system stores in an update database information about the software updates of the diverse software vendors, identifying the software products for which software updates are available, their location on the network at the various software vendor computer systems, information for identifying in the client computers the software products stored thereon, and information for determining for such products, which have software updates available. Users of the client computers connect to the service provider computer and obtain a current version of portions of the database.
    Type: Grant
    Filed: September 13, 2000
    Date of Patent: September 24, 2002
    Assignee: Networks Associates Technology, Inc.
    Inventors: William Cheng, Kenneth Hwang, Ravi Kannan, Babu Katchapalayam, Bing Liu, Balaji Narasimhan, Gopal Ramanujam, Jonathan Tran
  • Patent number: 6436533
    Abstract: The present invention relates to melt spun fibers prepared from blends of poly(tetrafluoroethylene) and poly(tetrafluoroethylene-co-perfluoro-alkylvinyl ether).
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: August 20, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Glenn William Heffner, William Cheng Uy, Martin Gerald Wagner
  • Publication number: 20020079610
    Abstract: The processes and apparatus of the present invention concerns melt spinning high viscosity fluoropolymers into single filaments or multi-filament yarns at high spinning speeds, the melt spinning being carried out at a temperature which is at least 90° C. greater than the melting point of the polymer or in the case of perfluoropolymer, at a temperature of at least 450° C., and the yarns produced by the process, wherein the filaments exhibit a greater axial orientation in the center of the filament than at the surface.
    Type: Application
    Filed: August 2, 2001
    Publication date: June 27, 2002
    Inventors: William Cheng Uy, Edward William Tokarsky
  • Publication number: 20020061398
    Abstract: The present invention relates to melt spun fibers prepared from blends of poly(tetrafluoroethylene) and poly(tetrafluoroethylene-co-perfluoro-alkylvinyl ether).
    Type: Application
    Filed: June 28, 2001
    Publication date: May 23, 2002
    Inventors: Glenn William Heffner, William Cheng Uy, Martin Gerald Wagner
  • Patent number: 6207275
    Abstract: This invention pertains to melt spun fibers of copolymers formed from tetra-fluoro ethylene and perfluorovinyl monomers and a process for their formation. In the process of this invention fibers exhibiting high strength and low shrinkage are drawn from the melt at SSFs of at least 500×.
    Type: Grant
    Filed: January 4, 2000
    Date of Patent: March 27, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Glenn William Heffner, William Cheng Uy, Martin Gerald Wagner
  • Patent number: D437187
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: February 6, 2001
    Inventor: William Cheng