Patents by Inventor Walter E. Segl, Jr.

Walter E. Segl, Jr. 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).

  • Process for manufacturing blown film sheeting
    Patent number: 4138453
    Abstract: Blown film sheeting is manufactured using a tubular film blowhead fitted with internal and external air cooling devices, a collapsible frame for flattening the tubular film and a slitting device positioned above the frame for producing the film in sheet form just prior to removal of the film on dual takeoff rolls. The invention is particularly adaptable for thermoplastic polyethylene film.
    Type: Grant
    Filed: May 17, 1977
    Date of Patent: February 6, 1979
    Assignee: Exxon Research & Engineering Co.
    Inventor: Walter E. Segl, Jr.