Patents by Inventor Robert A. Steen

Robert A. Steen 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).

  • Method for making package having oil-containing product
    Patent number: 4812319
    Abstract: An improved package and method of packaging, including an oil-containing product, includes a multiple layer packaging sheet material which has reduced sensitivity to cockling. The multiple layer sheet material includes a layer which is susceptible to being swelled when in contact with oil, giving a cockled appearance. With reference to the package structure, the sheet material also includes a layer which impedes penetration of oil, the impeding layer being between the oil-containing product and the layer which is susceptible to being swelled when in contact with oil. The impeding layer comprises polypropylene.
    Type: Grant
    Filed: July 6, 1987
    Date of Patent: March 14, 1989
    Assignee: American National Can Company
    Inventors: Joseph C. Hsu, Robert A. Steen
  • Package having oil-containing product
    Patent number: 4546882
    Abstract: An improved package, including an oil-containing product, includes a multiple layer packaging sheet material which is free from cockling. The multiple layer sheet material includes a layer which is susceptible to being swelled when in contact with oil, giving a cockled appearance. With reference to the package structure, the sheet material also includes an oil barrier layer between the oil-containing product and the layer which is susceptible to being swelled when in contact with oil. The barrier layer comprises either nylon or ethylene vinyl alcohol.
    Type: Grant
    Filed: February 7, 1983
    Date of Patent: October 15, 1985
    Assignee: American Can Company
    Inventors: Joseph C. Hsu, George O. Schroeder, Robert A. Steen
  • Package having oil-containing product
    Patent number: 4491598
    Abstract: An improved package, including an oil-containing product, includes a multiple layer packaging sheet material which has reduced sensitivity to cockling. The multiple layer sheet material includes a layer which is susceptible to being swelled when in contact with oil, giving a cockled appearance. With reference to the package structure, the sheet material also includes a layer which impedes penetration of oil, the impeding layer being between the oil-containing product and the layer which is susceptible to being swelled when in contact with oil. The impeding layer comprises polypropylene.
    Type: Grant
    Filed: February 7, 1983
    Date of Patent: January 1, 1985
    Assignee: American Can Company
    Inventors: Joseph C. Hsu, Robert A. Steen