Patents by Inventor Norman J. Bond

Norman J. Bond 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 making polyester blend fiber
    Patent number: 4755336
    Abstract: A process is provided wherein a polymer blend of a poly(butylene terephthalate) and about 5 to 25% by weight of poly(ethylene terephthalate) is melt spun to form a fiber or yarn which is then drawn at an elevated temperature resulting in the poly(butylene terephthalate) having a stable beta crystal form in relaxed condition. The fiber or yarn may then be subjected to a heat relaxation treatment which changes the crystal form of the poly(butylene terephthalate) from the beta to the alpha form resulting in some shrinkage of the fiber or yarn and causing it to have a greater degree of stretchability.
    Type: Grant
    Filed: May 14, 1986
    Date of Patent: July 5, 1988
    Assignee: Hoechst Celanese Corporation
    Inventors: Martin H. G. Deeg, Norman J. Bond