Patents by Inventor Phu D. Nguyen

Phu D. Nguyen 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).

  • Patent number: 6087591
    Abstract: Polymeric compositions which contain a thermoplastic aromatic polyester, preferably polybutylene terephthalate, and a polyester block copolymer having a recrystallization temperature greater than 150.degree. C., preferably a thermoplastic elastomer containing aromatic polyester blocks and aliphatic polyester blocks. The ratio of the block copolymer to the aromatic polyester is 0.05:1 to 0.35:1, preferably 0.15:1 to 0.30:1. These compositions are particularly useful as the insulation on hermetic lead wires for use in refrigerant systems. To prevent cracking of such insulation when it is contacted by a varnish used to provide hermetic sealing, it can be covered by a thin layer of a fluoropolymer.
    Type: Grant
    Filed: July 31, 1996
    Date of Patent: July 11, 2000
    Inventors: Phu D. Nguyen, Ismael L. Sandoval, Stephen L. Tondre, Alan S. Yeung
  • Patent number: 5502287
    Abstract: This invention relates to multi-component assemblies comprising a plurality of substantially parallel insulated conductors and or cables at least one of which is wrapped in a flexible affixment means thereby enabling the wrapped component to be secured to a support substrate.
    Type: Grant
    Filed: March 10, 1993
    Date of Patent: March 26, 1996
    Assignee: Raychem Corporation
    Inventor: Phu D. Nguyen
  • Patent number: 5327513
    Abstract: This invention relates to flat cables comprising a plurality of substantially parallel insulated conductors bonded to a polymeric substrate which has a melting point greater than 200.degree. C. and/or a thickness less than 2.5 mils (98 microns) and a method for the production of such cables.
    Type: Grant
    Filed: May 28, 1992
    Date of Patent: July 5, 1994
    Assignee: Raychem Corporation
    Inventors: Phu D. Nguyen, Ashok K. Mehan, Hans E. Lunk, James M. O'Brien
  • Patent number: 5276759
    Abstract: This invention relates to flat cables comprising a plurality of insulated conductors bonded to a porous substrate. The porous substrate is impregnated with a polymeric material capable of bonding to the insulation of the conductors. The strength of the bond can be varied by varying the amount of the impregnant. If it is desired to separate one or more of the conductors from the substrate, for example to form a branch off, a minimum amount of impregnant can be used.
    Type: Grant
    Filed: January 9, 1992
    Date of Patent: January 4, 1994
    Assignee: Raychem Corporation
    Inventors: Phu D. Nguyen, Ashok K. Mehan, Hans E. Lunk, James M. O'Brien
  • Patent number: 5268531
    Abstract: This invention relates to flat cables comprising a plurality of insulated conductors bonded to a metallic substrate. The metallic substrate is provided with a layer of polymeric material capable of bonding to the insulation of the conductors. The layer of polymeric material is bonded to the metallic substrate with a peel strength of at least about 1 pound per linear inch (pli). The insulated conductors are bonded to the layer of polymeric material. The bond strength between the insulated conductors and the layer of polymeric material and the bond strength between the layer of polymeric material and the metallic substrate are such that the individual insulated conductors can be cleanly peeled away from the substrate.
    Type: Grant
    Filed: March 6, 1992
    Date of Patent: December 7, 1993
    Assignee: Raychem Corporation
    Inventors: Phu D. Nguyen, Ashok K. Mehan, Hans E. Lunk, James M. O'Brien