Patents by Inventor John F. Tweedie

John F. Tweedie 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 of producing polysaccharide foams
    Patent number: 5851461
    Abstract: Disclosed is a method of producing polysaccharide foams and foams produced by the method. The polysaccharide foams are formed from a wet condition and are convection dried with a flow of warm or hot air. Such foams exhibit improvements over foams dried under ambient conditions. The present invention also discloses the formation of multi-ply foam layers. At least two sheets of foam layers are layered together and laminated either mechanically or chemically to produce a composite structure.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: December 22, 1998
    Assignee: Albany International Research Co.
    Inventors: George Bakis, Dana Burton Eagles, John F. Tweedie