Patents by Inventor Michael Frank Johnnie

Michael Frank Johnnie 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).

  • Patent number: 6034608
    Abstract: A tornado alarm that monitors humidity, static charge in the air and the barometric pressure. Nothing happens until the level of static electricity increases to a set amount over a stored base level and the humidity reaches 100 percent. At this point the first stage alarm is activated. The device sends out an initial blast followed by a report every 60 seconds during this mode of operation. At this point, the user is awakened by the alert. The user then can turn on news reports to verify danger. Once awake, if danger exists, the user can prepare for a tornado and be ready. When the barometric pressure reaches 28 millibars, the third condition is reached. Under most circumstances, a tornado is then immanent. This sets the device into the second stage alert mode. In this mode, a continuous alarm sounds.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: March 7, 2000
    Inventors: Henry Frank, Michael Frank Johnnie