Patents by Inventor J. Howard Shafer

J. Howard Shafer 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).

  • Gas sensor protection devices and assemblies
    Patent number: 4870855
    Abstract: Hazardous gas sensor assemblies having a reticulated foam splash guard, and reticulated foam splash guards for such hazardous gas assemblies.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: October 3, 1989
    Assignee: Delphian Corporation
    Inventor: J. Howard Shafer