Patents by Inventor Michael N. H. Holley

Michael N. H. Holley 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).

  • Method of amelioration of soil for tree planting
    Patent number: 5078214
    Abstract: A method of preparing land for tree planting includes the step of ameliorating small zones of the land required for planting. These zones may be between the rows of stumps after tree felling and are of the order of one meter square and 25 to 75 cms deep. The zones are ameliorated by grabbing a volume of soil in selected zones, which disturbs the soil in those zones, and allowing it, in an ameliorated state, to re-occupy that volume.
    Type: Grant
    Filed: April 17, 1990
    Date of Patent: January 7, 1992
    Assignee: Holley Brothers (PTY) Limited
    Inventor: Michael N. H. Holley