Patents by Inventor Alan C. Preble

Alan C. Preble 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 producing fully-processed low-carbon electrical steel
    Patent number: 4251294
    Abstract: A method for producing fully processed, non-silicon containing, low-carbon electrical steel without post-anneal deformation by continuously annealing a steel strip having a carbon content less than 0.02% at a temperature within the range of 1350.degree. F. to 1550.degree. F.
    Type: Grant
    Filed: August 22, 1978
    Date of Patent: February 17, 1981
    Assignee: National Steel Corporation
    Inventors: David A. Chatfield, Joseph F. Rzepka, Alan C. Preble