Patents by Inventor Frederick Theodore Wallenberger

Frederick Theodore Wallenberger 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 comolding a composite cushioning structure from a pneumacel fiber batt and synthetic elastomeric foam
    Patent number: 4051210
    Abstract: A process for the combination of pneumacel fiber and synthetic elastomeric foam is provided that yields highly desirable, composite cushioning structures. A compressed, resin-bonded pneumacel batt is pre-expanded and combined with a precursor of an elastomeric foam under conditions leading to minor but definite penetration of the batt by the foam to give durably unitary cushioning with the best features of both materials.
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: September 27, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Frederick Theodore Wallenberger