Patents Assigned to Forestry Injection Company FIC AB
  • Method and apparatus for applying herbicide and the like to trees
    Patent number: 5086584
    Abstract: A method for treating a tree comprises the steps of punching at least one hole in a trunk of a tree and injecting an individual chemical pellet directly into the at least one hole. The chemical pellet dissolves in and mixes with sap of the tree to treat the tree. A dispenser for injecting the pellets and a punch hammer for punching holes in the tree, both of which are used in the tree treating method, are also disclosed.
    Type: Grant
    Filed: October 12, 1989
    Date of Patent: February 11, 1992
    Assignee: Forestry Injection Company FIC AB
    Inventor: Hans A. K. Merving