Patents by Inventor Owen P. Roberts

Owen P. Roberts 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).

  • Soft water-permeable polyolefins nonwovens having opaque characteristics
    Patent number: 4868031
    Abstract: A method for controlling opacity, softness, and strength of polyolefin fiber-containing nonwoven material and corresponding nonwoven material, obtained by utilizing at least 25%, based on web weight, of polyolefin filament (a) having an original spun denier not exceeding about 24 dpf, (b) having a final drawn denier of not less than about 1 dpf, and (c) delta, diamond, or mixed delta and diamond cross-sectional configurations alone or combined with fiber having round or other cross sectional configuration.
    Type: Grant
    Filed: October 21, 1988
    Date of Patent: September 19, 1989
    Assignee: Hercules Incorporated
    Inventors: James P. Modrak, Owen P. Roberts
  • Soft water-permeable polyolefin nonwovens having opaque characteristics
    Patent number: 4798757
    Abstract: A method for controlling opacity, softness, and strength of polyolefin fiber-containing nonwoven material and the corresponding nonwoven material by utilizing at least 25%, based on web weight, of polyolefin filament (a) having an original spun denier not exceeding about 4 dpf, (b) having a final drawn denier of about 1.9-3.0 dpf, and (c) a delta cross-sectional configuration.
    Type: Grant
    Filed: June 22, 1987
    Date of Patent: January 17, 1989
    Assignee: Hercules Incorporated
    Inventors: James P. Modrak, Owen P. Roberts