Patents by Inventor John Putman

John Putman 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).

  • Material testing apparatus with selectively sealed and unsealed dies
    Publication number: 20070220990
    Abstract: Improvements to a sealed die material testing apparatus having dies with associated seal plates include providing apparatus modifications that enable the apparatus to be employed as a non-sealed die system. Improvements include adapting the seal plates to carry spacers and, alternatively, adapting the apparatus to effect a gap between the seal plates.
    Type: Application
    Filed: March 23, 2006
    Publication date: September 27, 2007
    Inventors: John Putman, Matthew Putman