Patents by Inventor Helen Louise McPhail

Helen Louise McPhail 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).

  • Glass compositions
    Patent number: 6998362
    Abstract: An infrared and ultraviolet absorbing soda-lime-silica glass of a neutral tint containing 0.3% to 0.7% by weight total iron expressed as Fe2O3, together with amounts of Se, Co3O4 and a ferrous iron content to provide a ratio of ferrous iron to total iron in the range of 21 to 34. NiO and TiO2 may be added to the glass. The resultant glass, in a nominal 4 mm thickness, has a visible light transmission of at least 70% and a direct solar heat transmission at least 12 percentage points below the visible light transmission. The iron in the glass is preferably provided by the inclusion of the mineral wuestite in the glass batch formulation.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: February 14, 2006
    Assignees: Pilkington PLC, Pilkington North America, Inc.
    Inventors: Paige L. Higby, Bret E. Penrod, Rodney G. Baker, Kenneth Melvin Fyles, Helen Louise McPhail
  • Glass compositions
    Publication number: 20020025899
    Abstract: An infrared and ultraviolet absorbing soda-lime-silica glass of a neutral tint containing 0.3% to 0.7% by weight total iron expressed as Fe2O3, together with amounts of Se, Co3O4 and a ferrous iron content to provide a ratio of ferrous iron to total iron in the range of 21 to 34. NiO and TiO2 may be added to the glass. The resultant glass, in a nominal 4 mm thickness, has a visible light transmission of at least 70% and a direct solar heat transmission at least 12 percentage points below the visible light transmission. The iron in the glass is preferably provided by the inclusion of the mineral wuestite in the glass batch formulation.
    Type: Application
    Filed: August 31, 2001
    Publication date: February 28, 2002
    Applicant: LIBBEY-OWENS-FORD CO.
    Inventors: Paige L. Higby, Bret E. Penrod, Rodney G. Baker, Kenneth Melvin Fyles, Helen Louise McPhail