Patents by Inventor Yuan C. Chu

Yuan C. Chu 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: 5348669
    Abstract: A grease composition for use as a cable filling material which contains about 75 to 95 parts by weight of a base component of a polyol or ester having a molecular weight of at least about 3000 and about 2 to 20 parts by weight of colloidal particles such as silica. Optionally, an antioxidant component can be added to impart high temperature resistance or a rubber component can be added to improve bleed resistance. Also, an article of manufacture of a cable having a sheath with one of the grease compositions of the invention located therein, and a method for filling the cable with such grease compositions.
    Type: Grant
    Filed: June 4, 1993
    Date of Patent: September 20, 1994
    Assignee: CasChem, Inc.
    Inventors: Melvin Brauer, Yuan C. Chu
  • Patent number: 4886600
    Abstract: Polyurethane compositions comprising isocyanate cured specific equivalent weight hydroxyl bearing components used as potting compounds or sealants for hollow fiber or folded membrane biomedical separatory devices, especially when such devices contain containments such as glycerine or water.
    Type: Grant
    Filed: February 18, 1988
    Date of Patent: December 12, 1989
    Assignee: CasChem, Inc.
    Inventors: Yuan C. Chu, Melvin Brauer
  • Patent number: 4865735
    Abstract: Polyurethane compositions having improved adhesion comprising amine containing isocyante cured polyols of liquid esters of carboxylic acids having at least 8 carbon atoms for use as potting compounds or sealants for hollow fiber or folded membrane biomedical separatory devices, especially when such device contain contaminants such as glycerine or water.
    Type: Grant
    Filed: February 18, 1988
    Date of Patent: September 12, 1989
    Assignee: CasChem, Inc.
    Inventors: Yuan C. Chu, Melvin Brauer
  • Patent number: 4507188
    Abstract: A coating composition comprising a radiation curable oligomer and a reactive diluent having the formula: ##STR1## wherein R' is a monovalent aromatic or alkyl radical including from 4 to about 20 carbon atoms, R.sup.2 is a divalent alkyl radical including from about 2 to about 4 carbon atoms, and R.sup.3 is hydrogen or methyl. Addition of the reactive diluent not only reduces the viscosity of the uncured composition to an acceptable value for use as a coating but also surprisingly increases the elongation of the cured coating without reducing its tensile strength. Superior coatings for floor tiles, flooring, and other applications are thus provided.
    Type: Grant
    Filed: December 21, 1983
    Date of Patent: March 26, 1985
    Assignee: Thiokol Corporation
    Inventor: Yuan C. Chu