Patents by Inventor Michael Frisina

Michael Frisina 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).

  • Tree punch and tree plug insertion tool
    Patent number: 10624272
    Abstract: A tool including a tree punch for forming holes in a tree. The tool also includes a tree plug insertion tool for inserting cylindrical tree plugs into the holes created by the tree punch.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: April 21, 2020
    Inventors: Glayne Doolittle, Michael Frisina
  • Injection plug for insertion into a tree
    Patent number: 10462979
    Abstract: An injection fluid retention plug is provided which may be inserted into a preformed hole in a tree. The plug includes a hollow shank portion which is filled with a resilient material. The inner and outer ends of the shank portion have the same outer diameter. The shank portion does not have a flange at the outer end thereof.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: November 5, 2019
    Inventors: Glayne Doolittle, Michael Frisina