Patents by Inventor Ronald Leslie Larsen

Ronald Leslie Larsen 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).

  • Production of net or net-like products
    Patent number: 4038008
    Abstract: An apparatus for the production of perforated tubular film i.e., net is disclosed. A tube of a thermosetting polymer is continuously extruded and the extrusion opening is alternately interrupted first from one side of the tube and then from the other thereby doubling the capacity of the machine.
    Type: Grant
    Filed: July 14, 1975
    Date of Patent: July 26, 1977
    Assignee: Conwed Corporation
    Inventor: Ronald Leslie Larsen
  • Seedling transplant containers
    Patent number: 4016678
    Abstract: A seedling transplant container is disclosed. The container is a net-like tube preferably with an open bottom and having one set of strands which is of substantially greater strength (at least 25% and preferably 50%) than the other set of strands so that the container can be machine planted but yet easily ruptured by the growing plant.
    Type: Grant
    Filed: May 5, 1975
    Date of Patent: April 12, 1977
    Assignee: Conwed Corporation
    Inventor: Ronald Leslie Larsen
  • Lubricant for the production of nylon and polytetramethylene terephthalate net-like structures
    Patent number: 3988410
    Abstract: Lubricants for the production of net-like products from nylon and polytetramethylene terephthalate are disclosed. The lubricants comprise polyolefin with a specific melt index, said polyolefins being homopolymers of olefins or copolymers of two or more olefins.
    Type: Grant
    Filed: March 21, 1975
    Date of Patent: October 26, 1976
    Assignee: Conwed Corporation
    Inventors: Ronald Leslie Larsen, William Bela Haffner