Patents by Inventor Gerard Lees

Gerard Lees 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: 6106942
    Abstract: The invention is directed to LCP monofilaments and yarn made therefrom which have improved adhesion properties, said monofilaments, and yarn made therefrom, comprising a liquid crystalline polymer filament having a finish selected from the group consisting of esters formed between (a) pentaerythritol and saturated polyols of up to 10 carbon atoms and 2 to 6 hydroxyl groups, and (b) a carboxylic acid of formula C.sub.x H.sub.2x=1 COOH, wherein x is from 2 to 20, and wherein 2 to 6 of the hydroxy functions are converted to ester functions. In a preferred embodiment of the invention the finish is an ester formed from the reaction of pentaerythritol and a carboxylic acid of formula C.sub.x H.sub.2x=1 COOH, wherein x is from 2 to 20, and preferably between 14 and 20. The most preferred esters are pentaerythritol tetrapelargonate and pentaerythritol tetraisostearate.
    Type: Grant
    Filed: December 2, 1998
    Date of Patent: August 22, 2000
    Assignee: Celanese Acetate LLC
    Inventors: Norman S. Anderson, John D. Gibbon, M. Ishaq Haider, Gerard Lees
  • Patent number: 4725371
    Abstract: The invention provides partially oriented polyester yarn finishes capable of substantially reducing the level of broken filaments resulting from polyester yarn texturing. Finishes of the invention are a stable oil-in-water emulsion with the oil phase including a polyester yarn texturing lubricant. The emulsion finish has a pH of at least 9.0, preferably between about 10 and about 11.5.
    Type: Grant
    Filed: January 29, 1985
    Date of Patent: February 16, 1988
    Assignee: Celanese Corporation
    Inventors: Gerard Lees, Ronald L. Griffith
  • Patent number: 4016132
    Abstract: A process for the production of a colored shaped article from an olefine polymer, wherein from 5 to 20% of a polyester by weight of said olefine polymer and from 0.01 to 2% by weight of said olefine polymer of a dyestuff soluble therein are separately or together mixed with or incorporated into the polyolefine prior to shaping, and said polyolefine is shaped.
    Type: Grant
    Filed: November 17, 1975
    Date of Patent: April 5, 1977
    Assignee: Imperial Chemical Industries Limited
    Inventor: Gerard Lees
  • Patent number: 4011192
    Abstract: Manufacture of variegated yarns from thermoplastic polymer by incorporation of color at extrusion with interval of change of type or quantity of color greater than 0.03 T, where T is half-decay time for instantaneous injection of color.
    Type: Grant
    Filed: December 13, 1971
    Date of Patent: March 8, 1977
    Assignee: Imperial Chemical Industries Limited
    Inventor: Gerard Lees
  • Patent number: 3969312
    Abstract: A process for the manufacture of filaments or films wherein a fiber-or film-forming polyester is melted, there is incorporated into the melt a proportion of at least one coloring material which is soluble in the melt and the resultant colored melt is extruded to form filaments or films.
    Type: Grant
    Filed: July 2, 1971
    Date of Patent: July 13, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventor: Gerard Lees