Patents by Inventor Joel Freeman Butler

Joel Freeman Butler 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: 6637155
    Abstract: A cylindrical plant container having a dual sidewall and a bottom wall is provided. The inner sidewall is constructed of woven polypropylene fabric and the outer sidewall is constructed of wire, such as chicken wire. The inner sidewall extends above the outer sidewall and is folded over the top of the outer sidewall and is fastened thereto. The inner sidewall also extends below the outer sidewall and is folded over the bottom of the outer sidewall and is fastened thereto. The bottom wall is removably connected to the combined inner and outer sidewall. The bottom wall is of a non-woven polypropylene material. The present invention is designed to be used in a plant nursery. The woven polypropylene permits air to penetrate through the sidewall permitting air pruning of the roots proximal the sidewall. This forces the roots to grow in both a horizontal and downward fashion resulting in a denser plant root system with no spiraling or circling of roots within the cylindrical plant container.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: October 28, 2003
    Inventors: Jason Trent Butler, Joel Freeman Butler
  • Patent number: 5937577
    Abstract: A cylindrical plant container having a dual sidewall is provided. The inner sidewall is constructed of polypropylene fabric and the outer sidewall is constructed of wire, such as chicken wire. The inner sidewall extends above the outer sidewall and is folded over the top of the outer sidewall and is fastened thereto. The inner sidewall also extends below the outer sidewall and is folded over the bottom of the outer sidewall and is fastened thereto. The present invention is designed to be used in a plant nursery. The woven polypropylene permits air to penetrate through the sidewall permitting air pruning of the roots proximal the sidewall. This forces the roots to grow in both a horizontal and downward fashion resulting in a denser plant root system with no spiraling or circling of roots within the cylindrical plant container. The heat transfer characteristics of the polypropylene reduces the root ball temperature compared to other containers.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: August 17, 1999
    Inventors: Jason Trent Butler, Joel Freeman Butler