Patents by Inventor Erich Lehmann

Erich Lehmann 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: 6339899
    Abstract: The invention relates to a device (1), especially for growing plants, having at least one pot (2) in which the base is provided with a plurality of openings (10). Each opening (10) has a first part (12) which is formed in the base (3) and extends up to the pot wall (4). Each opening (10) also has a second part (13) which is formed in an area of the pot wall (4) located close to the base and which is adjacent to said first part (12). The first part (12) of the opening (10) is covered in the inner space of the pot by forming lateral passage openings (20) with a ridge (15) which is at least partially set at a distance from the base (3). The root tips die as soon as they reach the passage openings (20) between the ridge (15) and the base (3) since they come in contact with light and air. As a result, undesired turning growth of the roots is prevented in a simple manner.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: January 22, 2002
    Inventor: Erich Lehmann